Check Engine Light: code help!

[Talon virgin]

After punching it a couple days ago and feeling the engine bog down. i decided to do a tuneup
before doing anything i ran half a can of seafoam through the intake and threw the rest in the tank just to see if i had a sticky valve or clogged injector

it didnt make a difference so i replaced the plugs and wires with NGKs, cleaned the injectors, replaced the fuel filter, cleaned the air filter, and did an oil change

not only did all of that not help... it made it worse... idle sounded like it was running on 2cyl and the CEL came on

Pulling codes I believe i got code 42 a fuel pump but ive never pulled codes off OBD I before
the multimeter i was using was on a buzzer setting, but it didnt seem to be working with this application

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HELP

 

[greydelta38]

I've found that pumping some Slick 50 fuel system cleaner works much better than SeaFoam.

To address your problem, it very well could be gunked up injectors, still, or the fuel pump. Maybe the fuel pressure solenoid. Check around the fuel system.

EDIT: I'm going off of a guess here, because the video won't load for me for some reason. Sorry if I'm totally wrong.

 

[Talon virgin]

Thnx grey,
I think I'll stick with the seafoam mainly because ive got a couple cases of it

if i can nap for a bit
i'll run through the fuel system when i get up

 

[90laserIA]

Do you have access to an analoge volt meter <one with a needle if so set it 15 amps and check it thats how the chiltons i have says to check it also now note that with a needle style it will peg 1 or 2 long duration than sever quick bounces you then need to match those with the appropriate code if you can get a analog meter and put a video up i have a manual i can check to tell you what code it is trowing also would be nice to know if its a turbo or non-turbo and what engine you have if its non-turbo

 

[NC_Dirt_Racer]

Have you checked the fuel pressure? Mark the position of the cam sensor then pull it off and slowly turn it to see if all injectors are firing. If both check out its most likely a clogged injector or 2 and when you ran the seafoam through it just pushed more dirt into them thus making it worse

 

[Talon virgin]

Have you checked the fuel pressure? Mark the position of the cam sensor then pull it off and slowly turn it to see if all injectors are firing. If both check out its most likely a clogged injector or 2 and when you ran the seafoam through it just pushed more dirt into them thus making it worse

not sure how you 'check' fuel pressure
or what you mean by it
I'm getting 6v on the yellow, 12v on the yellow/blue, and 4v on the white wires for the connectoe and the pump sounds like its running when i listen at the hatch in the trunk
as for the clogged injector i cleaned them out of the car after seafoaming and it didn't do anything..
a noid light says all 4 are receiving signal

 

[greydelta38]

not sure how you 'check' fuel pressure
or what you mean by it
I'm getting 6v on the yellow, 12v on the yellow/blue, and 4v on the white wires for the connectoe and the pump sounds like its running when i listen at the hatch in the trunk
as for the clogged injector i cleaned them out of the car after seafoaming and it didn't do anything..
a noid light says all 4 are receiving signal

Try getting the O2 sensors looked at. It's usually the upstream one that goes bad, but it could be both.

When you say it "bogs down", is it running funny ALL the time, or just for a few minutes after you start it? I know in Alabama my Eclipse runs really funny when it wakes up on a chilly morning, but evens out after a mile or so, and I've heard people jump all over cold engines claiming they have serious problems. Not saying that you would fall for that, but you never know, right?

 

[DSM1G90]

Set the analog VOM to 15 VDC, and watch for the needle swings of short and long swings. Longs are always first then the short swings. Then, there will be a pause then the code(s) will repeat themselves.

Only time you get a series of short swings if the ECU is in normal condition. One long swing means the ECU is toast.

Digital VOMS aren't good to read codes since it's not fast enough to recognize pulses as does an analog meter.

-DSM