Ford

Have Ford Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Ford
This answer was rated:

1987 Ford Ranger Super: 4x4..fuel filter..rotor..the injectors

I have a 1987 Ford...
I have a 1987 Ford Ranger Super 4x4 2.9L and I have replaced the distributor,pick up coil ,stator,plugs,cables,coil,fuel filter,fuel pump relay,EEC relay , EEC 2 times , ignition control module ,rotor , reset the inertia switch, changed all fuses in fuse box , and as soon as I turn on the ignition switch the fuel pump relay starts clicking non stop and the truck will turn over but will not start because there is no pulse at the injectors and no spark at the plugs, what is wrong with this thing. It will start about once every couple of days then after a few minutes start backfiring ,then die and back to the clicking and no spark and no pulse until it decides to run for a few minutes again.
Show More
Show Less
Ask Your Own Ford Question
Answered in 11 hours by:
8/25/2009
AMEDEE
AMEDEE, FORD TECHNICIAN
Category: Ford
Satisfied Customers: 27,089
Experience: ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
Verified

Hello!

 

I would like to help you diagnose this problem you are having with your vehicle.

 

Do you have a voltmeter?

 

Does the check engine light come on with the key in the on position?

 

 

Ask Your Own Ford Question
Customer reply replied 8 years ago
No, but I am not sure if it even works, i've never seen it on.In addition to things I have replaced,I replaced the fuel pressure gauge ,and I am getting fuel to the fuel rail.I don"t have a fuel pressure tester but when I press the pressure relief button fuel shoots to the hood constantly because of the fuel pump not cutting off..After power going to the coil there is no spark on the plugs and the fuel pump will not cut off because of the relay opening and closing rapidly and I am not getting power to the injectors to make them pulse.I have hooked a code reader to the plugs on the right side fender wall,but the thing keeps telling me to plug into vehicle.It works fine on my Durango so I know it works.

Ok...

 

Lets check one thing at a time.

 

Just hang in there with me.

 

Turn the key to the on position (don.t start the engine). Does the check engine light come on?

Ask Your Own Ford Question
Customer reply replied 8 years ago
No ,just the emission light and the seatbelt light and the emission light cuts off after a few seconds,the bulb my be burnt out.
SO no check engine light or service engine soon light?
Ask Your Own Ford Question
Customer reply replied 8 years ago
none.I have never seen it on since I bought the truck .

Ok... I just wanted to know if it comes on with the key in the on position.

 

Lets check for a 5 volt reference with the key on at the tps sensor.

 

Do you know where the tps sensor is?

 

 

Ask Your Own Ford Question
Customer reply replied 8 years ago
no, I don't know where the throttle position sensor is.

It will be located on the throttle body assembly. It will have three wires going to it.

 

Let me know if you need pictures.

Ask Your Own Ford Question
Customer reply replied 8 years ago

I am pretty sure I have found it,green ,black and orange wires running to it .Does the key switch need to be on?

YES!

 

One of those wires should have 5 volts on it

Ask Your Own Ford Question
Customer reply replied 8 years ago
I have 4.89 v on the orange wire and .03 on the other two.

Ok....

 

Good!

 

You said that we do not have spark.... correct?

 

DO we have power at the ignition coil?

Ask Your Own Ford Question
Customer reply replied 8 years ago
Yes 11.62v running to plug at coil.

Ok.... but no ground signal trigger?

 

To check the ground signal trigger, you are going to want to use a test light. The clip or alligator side of the test light gets hooked to battery power. The tip of the test light touches the signal wire to the coil. WIth the engine cranking over, the test light should blink if the coil is receiving a signal to fire spark.

Ask Your Own Ford Question
Customer reply replied 8 years ago
I really can't tell,I am the only one home yet and my good test light is at my parents house where the truck first laid down on me at and on one of the rare occasions that it started ,I drove it most of the way home before it started backfiring and then dying and some of my tools are still there,I am trying to use a test light for finding current in wires and the light is just to dim for me to see while cranking the truck.
Is there any way you can try a different test light later tonight or tomorrow?
Ask Your Own Ford Question
Customer reply replied 8 years ago
yes. but could you explain exactly which wire is the signal wire?Is it the one running to the distributer?
It should be the dark green with yellow stripe wire.
Ask Your Own Ford Question
Customer reply replied 8 years ago
all right.what do I need to do about waiting till later ,my wife will not be home until 7:00 pm eastern time,unless i can find some help sooner. just wait and reply when I have the answer or is there a time limit on how long I can wait?

No time limit... take your time!

 

I will be on line all day tomorrow!

 

Here is a wiring diagram.

 

graphic

Ask Your Own Ford Question
Customer reply replied 8 years ago
O.K. I went and got my tester and hooking the clip to the positive side of the battery and putting the pointy end on the green wire side of the plug the light came on,then when I turned the engine over the light went off sometimes glowing real real faintly but no visible blink!I tried several times on the pos. and neg. terminals so I would make sure I did it right ,same result on either terminal.
SO no solid or even dim blink to indicate a ground signal trigger?
Ask Your Own Ford Question
Customer reply replied 8 years ago
When I turned the engine over the light would cut off ,if I let it turn over for a while the light would come on just barely visible, too dim to tell if blinking.
That might indicate that the coil is getting a trigger to fire the spark. I would see if the parts place that you got the coil from would warranty it. I would replace it and then retest things.
Ask Your Own Ford Question
Customer reply replied 8 years ago
But why is the fuel pump running all the time and the fuel pump relay clicking.It should build pressure in an instant and quit until needing to pump more fuel into the injectors which are not pulsing.Something is not telling the computer to tell everything what to do,and that is what I need to find out.No offense but I find it hard to think that every part I've bought from Autozone,Advance Auto and O'rielly's is possibly defective.Most stuff I have had checked and was o.k. but I replaced anyway.

I believe you have a wiring or low voltage issue. This can be caused by a bad/loose connection or something like that.

 

If you would like to approach it by going after the fuel pump relay and inputs, lets do so.

Ask Your Own Ford Question
Customer reply replied 8 years ago
O.K. I do apologize for this taking so long.I am by no means an auto mechanic, but in 20 some years I haven't had a problem I couldn't figure out.I have checked everything,this has been going on for months,I have tested all fusible links I could find,pulled every connection apart and put back together I could find. I just can not figure it out.Bad thing is I know it has to be something real simple.

I would be willing to bet you are right... it is going to be something simple. We just need to find it.

 

If you are willing to stick with me, I will have you run a series of test so that we can pinpoint this problem. It may take a bit, but I am willing to do this if you are too.

Ask Your Own Ford Question
Customer reply replied 8 years ago

At this point I am ready for anything!!

Ok...

 

I am going to ask some silly and basic questions. Just stick with me as I will not leave you hanging. I am in the middle of dinner but I will try my best to respond to you asap!

 

 

Ask Your Own Ford Question
Customer reply replied 8 years ago
If you want to wait till tomorrow ,we can,I get off work at 3:00 pm EST and we can resume there. It is starting to get a little dark here and I may not have much longer to see outside.You can send me a list of stuff to check and after I've done it I can reply.

Ok.. that is just fine.

 

First step is to go to the fuel pump relay and check all the wires.

 

Can you get me the color wires that go into this relay?

 

 

Ask Your Own Ford Question
Customer reply replied 8 years ago
Tthis probobly isn't going to be much help because the wire colors are faded badly-orange with blue stripe,yellow couldn't find a stripe,red couldn't find a stripe,and what might have been green at one time but mostly tan now with a brown or red stripe.Hope this helps!!

Ok... Good!

 

The yellow and the red wire should both have FULL battery voltage with the key on. I want to check for voltage on both of these wires with the key on and the relay still plugged in and clicking. we are going to need to back probe these cavities to get a voltage reading because we are going to leave the fuel pump relay plugged in.

 

After we do this test I want to see if the voltage changes on either of these two wires with the relay unplugged.

AMEDEE
AMEDEE, FORD TECHNICIAN
Category: Ford
Satisfied Customers: 27,089
Experience: ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
Verified
AMEDEE and 87 other Ford Specialists are ready to help you
Ask your own question now

Just as a side note, I came across this TSB that I thought that I should bring to your attention.

 

Engine/Ignition - No Start Condition


87ford20
NO START - EEC IV - "E" COIL
Article No. 87-20-18FORD: 1983-86 LTD 1983-87 ESCORT, EXP, MUSTANG, THUNDERBIRD, CROWN VICTORIA 1984-87 TEMPO 1986-87 TAURUS

LINCOLN-MERCURY: 1983 LN7
1983-86 MARQUIS 1983-87 LYNX, COUGAR, GRAND MARQUIS, MARK VII, CONTINENTAL, LINCOLN TOWN CAR
1984-87 TOPAZ 1986-87 SABLE

LIGHT TRUCK: 1983-87 RANGER, E-SERIES, F-SERIES, BRONCO 1984-87 BRONCO II 1986-87 AEROSTAR
This article is being republished in its entirety to expand the model year coverage.

ISSUE: The primary winding of the E-core ignition coil may be damaged if the wire harness containing the tachometer circuit has a short to ground.

ACTION: Before replacing the E-core ignition coil, perform the following diagnostic procedure.

1. Turn ignition to "ON" position.

2. Measure and record battery voltage.
Figure 50




3. Measure and record voltage between negative terminal and coil and battery ground post as shown, Figure 50.
4. If the differencce in readings is greater than 1.0 volt, check tachometer circuit for a potential short to ground.

5. If a short is present, make necessary wire harness repair.

6. Replace ignition coil as required.

OTHER APPLICABLE ARTICLES: Supersedes 84-14-18, 84-14-18-S, 85-16-13, 86-2-21
WARRANTY STATUS: "INFORMATION ONLY"

 

graphic

Ask Your Own Ford Question

Here is a wiring diagram for your fuel pump relay.

 

If we have low voltage coming into the fuel pump relay on the red wire, lest go back and check the EEC relay and inputs.

 

If we have low voltage coming into the fuel pump relay on the yellow wire, lets go back and check the "blue" 20 gauge fusible link.

 

graphic

Ask Your Own Ford Question
Ask AMEDEE Your Own Question
AMEDEE
AMEDEE
AMEDEE, FORD TECHNICIAN
Category: Ford
Satisfied Customers: 27,089
27,089 Satisfied Customers
Experience: ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector

AMEDEE is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

24,320 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

28,139 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

Mike V.

Mike V.

Auto Service Technician

1,380 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

< Previous | Next >

Related Ford Questions
My fiance's 2008 Ford Taurus SEL starts shaking while
Hello, my fiance's 2008 Ford Taurus SEL starts shaking while driving at low speeds then the engine cuts off. The radio and other electric parts remain on. The check engine light is also on. Do you hav… read more
Eric
Eric
Retired
N/A
31,322 satisfied customers
I need injector and ignition Coil wiring colours for a ford
HELLO i need injector and ignition Coil wiring colours for a ford escape 2004 V6 engine and also factory engine coolant temperature Normal conditions… read more
Eric
Eric
Retired
N/A
31,322 satisfied customers
I have a 2007 F-150 Crew Caband my # 1 ignition coil is.
I have a 2007 F-150 Crew Cab*****and my # 1 ignition coil is … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,139 satisfied customers
Is any solution of 2007 Ford Taurus Sudden Acceleration that
Is any solution of 2007 Ford Taurus Sudden Acceleration that has been reported by many people? … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
28,139 satisfied customers
2001 ford Taurus no heat, changed thermostat and barely
2001 ford Taurus no heat, changed thermostat and barely warm, temp guage fluctuates as you drive, overflow tank barely warm after driving.… read more
HDGENE
HDGENE
5,818 satisfied customers
2011 Taurus SEL-- no heat on passenger side. Trying to
Second opinion] 2011 Taurus SEL-- no heat on passenger side. Trying to replace the passenger side actuator but having a hard time getting to it.… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,396 satisfied customers
Week spark at ignition coil on a 1989 ford 250 4.9. Lol,,
Week spark at ignition coil on a 1989 ford 250 4.9 … read more
Roy
Roy
shop foreman
Associate Degree
3,921 satisfied customers
I have a 2007 Ford Taurus 6cyl. Check engine light came on
I have a 2007 Ford Taurus 6cyl. Check engine light came on and I had it checked at shop . I replaced the EGR and had auto zone reset it but check engine light continues to stay on and refers to EGR . … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
Can i use 3.0 v6 engine from 1995 taurus to go in a 1993
can i use 3.0 v6 engine from 1995 taurus to go in a 1993 ranger with 3.0 v6 … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
I have a 2005 Ford Taurus and my check engine light is on, I
I have a 2005 Ford Taurus and my check engine light is on, I pull out the codes and it's P0171 and P0174, which is lean codes on both banks, need some help on where to start checking on this car, I ch… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
94 ranger intake ignition coil not getting power, what could
94 ranger intake ignition coil not getting power, what could be root cause? truck still runs but not good and loss and power.… read more
AMEDEE
AMEDEE
FORD TECHNICIAN
27,089 satisfied customers
I have a 2005 ford Taurus. the car will not start until you
I have a 2005 ford Taurus. the car will not start until you pump the gas pedal. once it starts you have to keep you foot on the brake jpedal and keep the gas pedal jpumping … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
158 satisfied customers
Have a 2000 Ford Taurus 3.0 24 valve engine with 49,000
HI - have a 2000 Ford Taurus 3.0 24 valve engine with 49,000 miles - problem is when a/c is turned on blows HOT AIR only no matter what the temp is set at(digital temp switch), all selections floor, d… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,320 satisfied customers
No power coming from it, changed out ignition coils and
no power coming from it, changed out ignition coils and connectors. wonder what it would mean. and i keep getting P2312:00-64 and P2315:00-64 codes when i scan it. … read more
Kenny Z.
Kenny Z.
Ford Senior Master Technician
High School or GED
5,511 satisfied customers
2002 ford windstar, husband replaced ignition coil and not
2002 ford windstar, husband replaced ignition coil and not it will not start … read more
AMEDEE
AMEDEE
FORD TECHNICIAN
27,089 satisfied customers
The 3.5L V6 engine of my 2008 Ford Taurus Limited rattles
The 3.5L V6 engine of my 2008 Ford Taurus Limited rattles when it starts up after sitting overnight. … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,410 satisfied customers
Ford 2005 Taurus SE Engine light on code pulled PO174 but 1
Ford 2005 Taurus SE Engine light on code pulled PO174 but 1 year ago mechanic said to show Ford this number TSB - 06 - 20 - 10 is that a recall on this but its old an expired. … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
2005 4.6 no spark to the ignition coils, replaced it, f150
blew the ignition coil on #6 and replaced the coil. when it blew there was smoke from the drivers side under the hood. battery was replaced but sounds like no spark. … read more
AMEDEE
AMEDEE
FORD TECHNICIAN
27,089 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x