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Isuzu Rodeo: I have a 2002 Isuzu Rodeo 3.2v6 that I have replaced

I have a 2002 Isuzu...
I have a 2002 Isuzu Rodeo 3.2v6 that I have replaced the radiator, water pump, and timing belt and at idle it rattles like crazy and the belt tensioner(new) shakes yet when you bring rpm up to 1200 or remove the serpentine belt it runs quiet.
However, it has no power and very slow acceleration and I was told something must be off a tooth on timing yet the marks on all 3 gears seem to fall in the correct spot. Any suggestions ?
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Answered in 3 minutes by:
7/24/2012
Tim's Auto Repair
Category: Car
Satisfied Customers: 16,087
Experience: Have owned a repair shop for 25 yrs.
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tims auto repair :

hi

tims auto repair :

did it do this before you replaced the timing belt?

tims auto repair :

are you there?

Customer:

I had removed the old belt before setting the crank to tdc. So to set the timing, I removed the spark plugs, turned the crank till the key way lined up with the mark on the oil pump. Then I rotated the 2 cam gears until they popped into place closest to the marks on the valve covers. The slack was toward the tensioner when it was reinstalled.

tims auto repair :

so

tims auto repair :

you didnt use the marks on the belt at all?

tims auto repair :

did it run this way before/

tims auto repair :

?

Customer:

I did at first. then when I rotated the crank around it appeared like the crank was off a tooth (counterclockwise). So I removed the tensioner again, reset the crank and when I did for whatever reason the marks on the belt now didn't line up with anything but when I rotate the crank around twice, the marks all come back to where they should.

tims auto repair :

ok

Customer:

It ran fine as far as I know before popping the timing belt off.

tims auto repair :

the lines on the belt wont align after just two rotations

Customer:

I wasn't even going to replace but then figured with 106,000 miles I better

tims auto repair :

because of its lenth

tims auto repair :

it sounds as if you do have it off a notch or maybe two

tims auto repair :

you need to align it this way

Customer:

Well, I've had a couple people say the same thing... you lose all power if it is off

tims auto repair :

yes

tims auto repair :

and,,iin danger of the valves hitting the pistons

tims auto repair :































2002 Isuzu Truck Rodeo LS 4WD V6-3.2L
Timing Belt Service and Repair, Procedures: Timing Belt Installation








THIS ARTICLE HAS BEEN UPDATED

NOTE:

- Do not install the timing belt until you are sure the camshafts, camshaft pulleys, and crankshaft timing pulley are in their correct "timed" positions.

- Left and right engine callouts are from the driver's seat.








93_02-047020917-004a.png
Full Size Image



1. With the green direction arrows on the timing belt pointing clockwise, slip the belt over the right camshaft pulley so its solid white line (the line closest to the direction arrows) aligns with the mark on the pulley. Secure the belt to the pulley with a large binder clip.

2. Wrap the timing belt around the bottom of the water pump pulley, and draw it tight.








94_02-047020917-004b.png
Full Size Image



3. Slip the timing belt over the left camshaft pulley so its other solid white line (the one farthest from the direction arrows) aligns with the mark on the pulley. Secure the belt to the pulley with a large binder clip.

4. Wrap the timing belt around the inner side of the idler pulley, then slip the belt over the crankshaft timing pulley with its dotted white line aligned to the green mark on the crankshaft timing pulley.








95_02-047020917-004c.png
Full Size Image



NOTE:
For correct belt stretch, the doffed line must meet the green mark on the crankshaft timing pulley at the 9 o'clock position. If there isn't enough slack to slip the belt over the pulley in the correct position, turn the crankshaft a few degrees counterclockwise, install the belt, then turn the crankshaft back to the 9 o'clock position.








96_02-047020917-004d.png
Full Size Image



5. Place the tensioner pusher in a soft-jawed vise, then slowly compress the tensioner pusher pin until it lines up with the two small holes in the tensioner pusher housing.

6. Insert a straightened heavy duty paper clip through the holes in the housing. This will hold the pin in its compressed position.

NOTE:
A new tensioner pusher comes with its pin held compressed by a special wire. If you install a new tensioner pusher, save the wire for future use.








97_02-047020917-005a.png
Full Size Image



7. Install the tensioner pusher:

- Install the lower bolt loosely.

- Push the tensioner pusher up against the tensioner pulley, then install the upper bolt, and torque it to 25 N.m (15 lb-ft).

- Torque the lower bolt to 25 N.m (15 lb-ft).

8. Remove the wire or paper clip from the tensioner pusher, and remove the binder clips from the camshaft pulleys.

9. Verify the timing belt is correctly installed:

- Rotate the crankshaft three complete turns.

- Align the crankshaft timing pulley notch with the mark on the oil pump housing.

- Check the green marks on both camshaft pulleys; they should line up with the valve cover timing marks.








98_02-047020917-005b.png
Full Size Image



NOTE:
After you rotate the crankshaft, the solid white lines on the belt will not align with the camshaft pulley marks; this is normal.

10.Remove the crankshaft bolt, then install the lower, the right, and the left timing belt covers. Torque the cover bolts to 19 N.m (14 lb-ft).

11.Install the crankshaft pulley, and torque the bolt to 167 N.m (123 lb-ft).

12.Install fan pulley bracket and tighten fixing bolts to the specified torque.
Torque: 22 Nm (16 ft. lbs.)
13.Install power steering pump assembly and tighten to the specified torque.
Torque:
M8 bolt: 22 Nm (16 ft. lbs.)
M10 bolt: 46 Nm (34 ft. lbs.)
14.Install cooling fan assembly and tighten bolts/nuts to the specified torque.
Torque: 22 Nm (16 ft. lbs.) for fan pulley and fan bracket.
Torque: 7.5 Nm (66.4 inch lbs.) for fan and clutch assembly.








19_sz02rdall_6aa-046a.png
Full Size Image



15.Move drive belt tensioner to loose side using wrench, then install drive belt to normal position.
16.Install radiator upper fan shroud.
17. Install air cleaner assembly.

Customer:

pain in the arse..just give me my chevrolet big block back !

tims auto repair :

lol..tyhats what im saying

tims auto repair :

time it this way...and it will be right

tims auto repair :

Please RATE my answer by clicking the RATINGS button, so I can get credit for my work,,the [BAD SERVICE] and [POOR SERVICE] rating does not give me credit].i don't receive commission if you give a less than 3 star/smiley rating ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.please understand,i can not see,hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so...sometimes you may need to right click the image,then save picture as]to save it to your computer so you can open it with your picture program...PLEASE ASK IF YOU NEED MORE HELP


 

Customer:

Will it cause a rattle in the front of the motor and a shake in the serpentine belt tensioner like I described ?

tims auto repair :

yes

tims auto repair :

it can cause everything to shake

tims auto repair :

put it in time,,i would think it will be fine

Customer:

I've been a parts man and mechanic of sorts all my life so I have some mechanical ability but this thing has just been crazy

Customer:

I will copy these instructions. I went out and bought a Haynes manual for the car and was not very helpful.

tims auto repair :

yes,,all cars are a little agravating now

Customer:

yeah, the engines in the 60's early 70's was the good ole days

tims auto repair :

even the eaarly 80's

tims auto repair :

no more though

tims auto repair :

even this engine isnt bad

tims auto repair :

they get worse in the newer models

Customer:

Thanks for your help Tim. I'll rate as soon as I copy these files. I probably won't get to it before weds. but I'll try to contact you if I have any further issues. Rich

tims auto repair :

you are very welcome

tims auto repair :

thanks Rich

Customer:

So is this or is it not an "interference" motor ???

tims auto repair :

yes

tims auto repair :

it is

Customer:

ok ...great ! hopfully I didn't bend anything ...I doubt it ...sounds too good other than the rattle and she fires with just the touch of the key

tims auto repair :

i wouldnt think you have any damage

tims auto repair :

dont

Customer:

done copying ...take care. Thanks again.

tims auto repair :

you also

tims auto repair :

you are very welcome

tims auto repair :

thanks for using justanswer

Tim's Auto Repair
Category: Car
Satisfied Customers: 16,087
Experience: Have owned a repair shop for 25 yrs.
Verified
Tim's Auto Repair and 87 other Car Specialists are ready to help you
Ask your own question now
Customer reply replied 5 years ago
Tim,
Just put the Rodeo back together this evening...still has a problem and I know without a doubt the belt is correct. The ONLY thing I'm not sure about is the camshafts' cycle. I believe the camshaft gear rotates twice for a complete cycle. So if one or both camshafts were on the wrong rotation, would the engine even run ? The marks of course were lined up perfectly with the belt and valve cover.
Thanks , Rich
The engine runs a little better than before... the shake is gone for the most part but still lacks some power and when I kick in the AC she dies. The only thing I know I need to do is add 1/2 qt of trans fluid which leaked out with radiator replacement.
i would think the timing is right now
does the engine light come on now?
if so,,can you give me the trouble code
explain to me what it does the best you can
thanks
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Customer reply replied 5 years ago
ok... She started right up when I put her back together and the rattle and shake that was in the front of the engine and belt tensioner is pretty much gone. If you rev the engine, It pops a little thru the intake and then revs up unless you press the acc pedal slower or up the rpm's before you stomp it. It's idle rpm is about 800.
Then I tried turning the ac on and it died. I put some seafoam in the gas tank thinking I might need to clean out the injection system a bit. I drove it up to the gas station 1.5 miles. Not very peppy at all. And when it sat at idle in park,
a small pop or clank could be heard occasionally in the engine...maybe every 30 seconds.
SO if I have a cam on the wrong cycle, would the engine even RUN ???
Customer reply replied 5 years ago
oh yes...engine light is flashing but it's been on forever...way before timing belt project. How do I get the trouble code ?
ok
you need a scanner to get the codes,,,if you dont have an obd2 scanner,,auto zone and most parts stores will scan it and give you the codes for free..these codes will give a clue to the problem
thanks
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Customer reply replied 5 years ago
ok. A buddy of mine is a Mgr. at the local Auto Zone. They're close now but I'll try to stop by there tomorrow evening and get the code(s). You didn't answer my question about the cam rotation. I personally don't think the engine would run at all if I had one of both cam gears 360 degrees out but that's just SWAG on my part. It was shifting hard so I definitely need to add some fluid. Unfortunately, no dipstick or place to add trans fluid on the top side.
there is no way to have the cams out if the marks aligned....and,,no,it wouldnt run,180deg out....so we can rule that out
thanks
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Customer reply replied 5 years ago
Good morning Tim,
I took the Rodeo to my local shop and they cleared the codes and ran a check.
Code P1312 came up. I have found several scenario's for that. Leaking intake gasket(new one was installed with copper cote. Wrong spark plugs...bought autolite double platinum but someone said need Denso brand . Anyway, I was going to spray around gasket to see if rpm's pick up. Any thoughts ??? My
shop insists I still must be off a tooth. Rich
this code is for a bad wire connection....
i will give you a break down for this code.....rich.if the belt is on as instructed above,,it is in time..though again,you may want to double check
thanks
2002 Isuzu Truck Rodeo LS 4WD V6-3.2L
A L L Diagnostic Trouble Codes ( DTC ) Testing and Inspection, P Code Charts: P1312
DTC P1312 ION Sensing Module SEC line 2 Circuit Fault


19_sz02rdall_esm_6e-2253.png
Wiring Diagram

Circuit Description
- The Power Control Module (PCM) will compare the secondary current reading to a predetermined maximum and minimum thresholds.

If the secondary current signal pulse width is out of the predetermined range, the fail counter will be incremented. If the failure counter exceeds the calibration, then the PCM is complete and a failure will be reported. If the sample counter threshold is reached before the failure threshold, then the PCM is complete and pass will be reported.

This PCM will detect an open/short circuit in the secondary current sense input circuit, misfire on the entire bank for the secondary current sense input circuit, coil failure, and same internal Ignition Current Sense System (ICSS) module faults.

Conditions for Setting the DTC
- Ignition voltage is between 10 volt and 16 volts.
- MAP sensor signal is between 26 kPa and 100 kPa.
- Fuel level is more than 19%.
- Engine speed is between 650 rpm and 6500 rpm.
- ION Sensing Module circuit is open or shorted signals on the SEC 2 line.

Action Taken When the DTC Sets
- The PCM will illuminate the malfunction indicator lamp (MIL) the first time the fault is detected.
- The PCM calculates an air flow value based on idle air control valve position, throttle position, RPM and barometric pressure.
- The PCM will store condition which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC
- The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
- A history DTC P1312 will clear after 40 consecutive trip cycle during which the warm up cycles have occurred without a fault.
- DTC P1312 can be cleared using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
An intermittent may be caused by the following:
- Poor connections.
- Misrouted harness.
- Rubbed through wire insulation.
- Broken wire inside the insulation.

Check for the following conditions:
- Poor connection at PCM - Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
- Damaged harness - Inspect the wiring harness for damage. If the harness appears to be OK, observe the moving connectors and wiring harnesses related to the sensor.

A change in the display will indicate the location of the fault. If DTC P1312 cannot be duplicated, the information included in the Failure Records data can be useful in determined vehicle mileage since the DTC was last set.

If it is determined that the DTC occurs intermittently, performing the DTC P1312 Diagnostic Chart may isolate the cause of the fault.

08_sz02rdall_esm_6e-2255.png
Step 1 - 8

12_sz02rdall_esm_6e-2256.png
Step 9 - 11

DTC P1312 - ION Sensing Module SEC line 2 Circuit Fault
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Customer reply replied 5 years ago
Hi Tim,
please resend diagrams...they won't enlarge. As far as bad connections, I didn't put the plastic locks back in the plugs for the coil packs cause I couldn't seem to get them locked in correctly. The plugs seem connected properly. I was more concerned with the spark plug to boot to coil pack connection. I don't understand how the boots install properly when they don't have a positive snap onto the spark plug ends...they just drop down the tube. I know there is a long spring inside but again I'm old school and used to the clips on the ends of spark plug wires. Main problem is still no acceleration or power on acceleration. Is that module inline in the air intake tube coming from the air filter ?
hi
ths pcm is the main engine computer..
try this
graphic
graphic
graphic
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Customer reply replied 5 years ago
ok...I was actually referring to the ION sensing module.
ok
sorry..here we go
thanks
graphic
graphic
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Customer reply replied 5 years ago
Tim,
Thanks for the parts location charts. I really need the DTC P1312 Diagnostic Chart so I can try to locate the cause of this code. You sent them a day or two ago but they won't open. Everything else you sent did. Is this information you have available in a repair manual ? I bought the Haynes manual but none of this was in theirs. Rich
ok
this may help
thanks
2002 Isuzu Truck Rodeo LS 4WD V6-3.2L
A L L Diagnostic Trouble Codes ( DTC ) Testing and Inspection, P Code Charts: P1312
DTC P1312 ION Sensing Module SEC line 2 Circuit Fault
graphic


Circuit Description
- The Power Control Module (PCM) will compare the secondary current reading to a predetermined maximum and minimum thresholds.

If the secondary current signal pulse width is out of the predetermined range, the fail counter will be incremented. If the failure counter exceeds the calibration, then the PCM is complete and a failure will be reported. If the sample counter threshold is reached before the failure threshold, then the PCM is complete and pass will be reported.

This PCM will detect an open/short circuit in the secondary current sense input circuit, misfire on the entire bank for the secondary current sense input circuit, coil failure, and same internal Ignition Current Sense System (ICSS) module faults.

Conditions for Setting the DTC
- Ignition voltage is between 10 volt and 16 volts.
- MAP sensor signal is between 26 kPa and 100 kPa.
- Fuel level is more than 19%.
- Engine speed is between 650 rpm and 6500 rpm.
- ION Sensing Module circuit is open or shorted signals on the SEC 2 line.

Action Taken When the DTC Sets
- The PCM will illuminate the malfunction indicator lamp (MIL) the first time the fault is detected.
- The PCM calculates an air flow value based on idle air control valve position, throttle position, RPM and barometric pressure.
- The PCM will store condition which were present when the DTC was set as Freeze Frame and in the Failure Records data.

Conditions for Clearing the MIL/DTC
- The PCM will turn the MIL "OFF" on the third consecutive trip cycle during which the diagnostic has been run and the fault condition is no longer present.
- A history DTC P1312 will clear after 40 consecutive trip cycle during which the warm up cycles have occurred without a fault.
- DTC P1312 can be cleared using the Tech 2 "Clear Info" function or by disconnecting the PCM battery feed.

Diagnostic Aids
An intermittent may be caused by the following:
- Poor connections.
- Misrouted harness.
- Rubbed through wire insulation.
- Broken wire inside the insulation.

Check for the following conditions:
- Poor connection at PCM - Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
- Damaged harness - Inspect the wiring harness for damage. If the harness appears to be OK, observe the moving connectors and wiring harnesses related to the sensor.

A change in the display will indicate the location of the fault. If DTC P1312 cannot be duplicated, the information included in the Failure Records data can be useful in determined vehicle mileage since the DTC was last set.

If it is determined that the DTC occurs intermittently, performing the DTC P1312 Diagnostic Chart may isolate the cause of the fault.
graphic
graphic
DTC P1312 - ION Sensing Module SEC line 2 Circuit Fault


Tim's Auto Repair
Category: Car
Satisfied Customers: 16,087
Experience: Have owned a repair shop for 25 yrs.
Verified
Tim's Auto Repair and 87 other Car Specialists are ready to help you
Ask your own question now
Customer reply replied 5 years ago
Tim,
Thanks for your help. I haven't had the time to try and troubleshoot the ION module code but I will get to it this weekend. I'm also not going to continue a membership on here but I paid you again for all your time. Rich
ok rich
that will be fine
thanks
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Customer reply replied 5 years ago
Hi Tim,
One last question before I expire(LOL), I started her up this evening after spraying all connections with contact cleaner. Ran the same and as I listened, I heard a slight tick on left bank. Thinking it was spark related I disconnected left front coil pack. Didn't make a difference. Then I disconnected middle left coil pack. Still no change. Finally I disconnected left rear coil pack. All three coil packs on left bank were disconnected and engine still ran the same. A buddy of mine who's been a mechanic for years told me I should do a compression check because when it backfired the first time I tried to start it I may have bent valves.
And I may be getting the p1213 code as a byproduct of the engine running poorly. I'm shocked because it runs fairly smooth especially considering one side doesn't appear to be firing. Ever see this before ? Rich
he is right..
you need to do a compression check sense it doesnt seem to hit good on that bank..it should have over 100psi on each cylender...you may infact have damage to the head/valves if the compression is low
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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