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HondaPlatinum
HondaPlatinum, A Technician
Category: Honda
Satisfied Customers: 11334
Experience:  13 year honda platinum level
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I changed the water pump coils spark plugs. Timming belt.

Customer Question

I changed the water pump coils spark plugs. Timming belt. May be all the senaors muffler new thorttle body. Pvc knock sensor and my rpm go up and down. You hit the gas and no power maybe a lil then its start to.misfired. plz i want to still with this car what can it be spend about 900 on it already
Submitted: 7 months ago.
Category: Honda
Expert:  david craig replied 7 months ago.

Hi Im David, what year is your civic?

Customer: replied 7 months ago.
2002 ex 1.7
Expert:  david craig replied 7 months ago.

ok. now what was the original problem?

Customer: replied 7 months ago.
My rmp goes up and down my engine light blinks on and off. And it misfired no power when hit gas
Customer: replied 7 months ago.
You fet my text
Expert:  david craig replied 7 months ago.

throttle position sensor...did you test it?

Expert:  david craig replied 7 months ago.

IAC...did you clean it?

Customer: replied 7 months ago.
If i pit new throttle body still have to check it
Expert:  david craig replied 7 months ago.

did you adjust the valves?

Customer: replied 7 months ago.
What valves
Customer: replied 7 months ago.
On the throttle body the in the hole
Expert:  david craig replied 7 months ago.

no, the valves under the valve covers. very common problems on honda and acuras. not too bad of a job either. will hep power and driveability a lot.

Customer: replied 7 months ago.
The exhaust valves no why i send the head to get check everything was find can it be out of timming
Customer: replied 7 months ago.
It like. Run lean
Expert:  david craig replied 7 months ago.

so you had the head sent out and checked?

Customer: replied 7 months ago.
Yea but the guy that put it together after water pump timming belt. bend. One and he had it replace so dont no if thats the problem
Expert:  david craig replied 7 months ago.

oh, boy. you need to do a compression test on all 4 cylinders.

Customer: replied 7 months ago.
how would i do that
Expert:  david craig replied 7 months ago.

you need a compression gauge. do you have one?

Customer: replied 7 months ago.
No
Expert:  david craig replied 7 months ago.

ok, you can run to harbor freight and buy a compression test set for very cheap and i will walk you through it. its easy.

Customer: replied 7 months ago.
That would have to be tomorrow so can i text you back
Expert:  david craig replied 7 months ago.

absolutely. right here. ill leave it open

Customer: replied 7 months ago.
Ok ill.pick one up tomorrow.
Expert:  david craig replied 7 months ago.

sounds good.

Customer: replied 7 months ago.
Thank you for your help so far
Expert:  david craig replied 7 months ago.

you bet

Expert:  david craig replied 7 months ago.

you get a compression tester?

Expert:  david craig replied 7 months ago.

do you still need assistance?

Customer: replied 7 months ago.
Still didnt get the piece busy kids sick snowing out here yea but i dont want to waste your time if i did get it
Expert:  david craig replied 7 months ago.

let me know when you get it

Customer: replied 7 months ago.
Can carben clog the gas flow to the spark plugs not enough gas
Customer: replied 7 months ago.
Would it be clog injecter and bad timing becould i had it replaced
Expert:  david craig replied 7 months ago.

no. but it will make the combustion chamber smaller.

Customer: replied 7 months ago.
Becould when i told the intake. Out the piece that goes in the middle of intake and block was full of corbin suck in it and can my egr be bad if i took it out lots of Corbin i it can it be suck and not closeing
Expert:  david craig replied 7 months ago.

you can run a bottle of seafoam through it. but you still need to do a compression test.

Customer: replied 7 months ago.
Ok ill.let you know when i get it ty
Expert:  david craig replied 7 months ago.

no problem.

Customer: replied 7 months ago.
Can you tell me why my obdll is not pick anything off the computer it keep say error
Expert:  david craig replied 7 months ago.

its probably because your code reader doesnt include all of the possible protocol operating systems.

Customer: replied 7 months ago.
Is there a specific OBD II scanner which is preferred for my Honda Civic. The reason being I previously took my mechanic and his didn't read and then I borrow my friends and its also not reading. Is there a specific scanner. I could use
Expert:  david craig replied 7 months ago.

does it say "no comm"?

Customer: replied 7 months ago.
ERROR is what it keep saying
Expert:  david craig replied 7 months ago.

check for 12 volts on pin 16 and ground on 4 and 5 of the DLC connector

Expert:  david craig replied 7 months ago.
Customer: replied 7 months ago.
That were you plug wire to read computer
Expert:  david craig replied 7 months ago.

yes

Customer: replied 7 months ago.
Ok ill check i now can inuse a regular one wire tester
Customer: replied 7 months ago.
Ok i check it i pit it on one and it came on put the ill put it on 16 and the light does come on
Customer: replied 7 months ago.
What wire shoud i check for power on the ecu
Customer: replied 7 months ago.
Can my egr cost that
Customer: replied 7 months ago.
I know this might not be th e answer but what would you charge me to come and check it for me i cant. Feger it out. The relay is clicking
Customer: replied 7 months ago.
How mine ground wire does 2002 honda civic haves. And if its bad would it not have battery power to the ecu
Expert:  david craig replied 7 months ago.

sorry for the delay, had to watch my Steelers win

Customer: replied 7 months ago.
can the battery be bad that not have. Enough power to ecu the light did not come on on 16 and can the egr be bad i unpluge it and it stay on. Dont it.tunes of if. It good
Expert:  david craig replied 7 months ago.

wow. can you please re type that...i have no idea what you just said.

Customer: replied 7 months ago.
it sound like cylinder 4 is misfire
Customer: replied 7 months ago.
Ok the ecu gets power of the battery. Right so i check the number 16 no light came on. Could it be the battery not sending pwer to ecu and the egr if you unplug it does the car tune off or stays on
Expert:  david craig replied 7 months ago.

alot of times unplugging the egr will not turn the car off.

Expert:  david craig replied 7 months ago.

so you didnt get power on pin 16 of the diagnostic connector?

Customer: replied 7 months ago.
None at all. And Were is the vaccuum hose so i could blow smoke in it to check for leaks
Expert:  david craig replied 7 months ago.

if you dont have power at pin 16 of the ecu, blowing smoke through the intake is the least of your problems. but you can pull the large vacuum hose off of the brake booster and blow smoke through there.

Customer: replied 7 months ago.
Ok. so is it the battery not have Enough power to the ecu i tried putting anther ecu but when i tune it on it stay on and then tune off can it be a bad ecu
Expert:  david craig replied 7 months ago.

the battery has nothing to do with it, you need to do a continuity teat of the wire from pin 16 on that connector to the ecu plug where that wire comes from.

Customer: replied 7 months ago.
Does it have to be the same number as the on
Customer: replied 7 months ago.
Car
Expert:  david craig replied 7 months ago.

the ecu? yes. the exact same number.

Customer: replied 7 months ago.
Can the ecu be bad that on there now
Expert:  david craig replied 7 months ago.

absolutely.

Expert:  david craig replied 7 months ago.

when you turn the key to the on positon, does the check engine light come on with all the other lights that come on?

Customer: replied 7 months ago.
Yea and it blinks then when the rpm dorps it stop blinking and stay on then the rpm stays going up.and down
Customer: replied 7 months ago.
Do you now what it cost if i take it to the honda dealer do check it. Thats were i got it from in 2002
Expert:  david craig replied 7 months ago.

ok before taking it to the dealer, did you take the IAC off and clean it out extremely well?

Customer: replied 7 months ago.
The one thats on there now it came with the new throttle bady
Expert:  david craig replied 7 months ago.

ok, well im going to open this up to others who may be able to help you. please dont reply back or it will take it off the list. good luck