Author Topic: 3rd gen allready on the blink (Read 1319 times)

Gator · « **on:** March 15, 2008, 02:16:20 pm »

took it out today and its running like a bag o shite its missing all over the place and cuts out randomly at idle

i have 4 ECU codes

32.   Fault in barometric pressure sensor circuit OR Fault in exhaust gas recirculation valve diagnostic switch OR Fault in electronic vacuum regulator valve

34.   Low voltage (high vacuum) at mass air flow sensor (or MAP sensor) mine is MAF

36.   Burn off at mass air flow sensor OR Problem in transmission shift OR Fault in direct ignition system OR Missing pulses in electronic spark timing signal

42.   Fault at electronic spark timing circuit OR Fault at direct ignition system OR Fault at fuel cutoff relay circuit

looks kind of like an ECM fault to me

any ideas i feckin hate electrickery in cars

55starchief · « **Reply #1 on:** March 15, 2008, 02:26:11 pm »

Have just PM'd coolblueSS over on HCP matey, dwain is a GM parts guy so he might well know whats up with it

FUBAR · « **Reply #2 on:** March 15, 2008, 02:34:59 pm »

a lot of those codes are pointing to ignition... Coil?

Gator · « **Reply #3 on:** March 15, 2008, 02:58:18 pm »

guys the codes have cleared out so they might of been old ones

right i took it out again and it runs fine until you give it some throttle then its all over the place and struggles to drop a down a gear and it pings like mad under load

gotta be timing and or vacuum aint it

FUBAR · « **Reply #4 on:** March 15, 2008, 03:03:22 pm »

My old car had bad pinking (think thats what its called) until I retimed it. it was massively out before.

55starchief · « **Reply #5 on:** March 15, 2008, 03:09:33 pm »

Wow!! You have a couple of things going on. Code 32 coud be as simple as a vacuum line, at worst a bad EGR valve. Not enough to cause it to run THAT bad. Check the connections at the EGR solenoid, the solenoid itself, and the valve. My guess would be the diaphram in the valve itself.

Code 34 and 36 sounds like a bad MAF sensor. Check your air intake hoses, and electrical connections. I'm sure you've done all the basic stuff, so it's probably the sensor.

Code 42 sounds like a bad ignition module. Ignition timing is read by the ECM through the module. That sounds like the biggest problem. It will defintely cause the majority of the problems he's having.

Hope this helps.

philoldsmobile · « **Reply #6 on:** March 15, 2008, 04:22:30 pm »

EGR solenoid has its own fault code....

def sounds like there was a whole word of things going on.. when you went to buy the car, did you get anything when you scanned it?

Gator · « **Reply #7 on:** March 15, 2008, 04:31:19 pm »

Quoting: philoldsmobile

EGR solenoid has its own fault code....

def sounds like there was a whole word of things going on.. when you went to buy the car, did you get anything when you scanned it?

codes have gone Phil and i have been out in it and it has not shown any more up it just goes rough under at hard throttle

philoldsmobile · « **Reply #8 on:** March 15, 2008, 04:41:08 pm »

chances are it will throw codes again if thats the case..

as soon as you get the light again, pull the c odes and post them up, might be able to get a better idea of whats going on from there.

Gator · « **Reply #9 on:** March 15, 2008, 04:55:11 pm »

Quoting: philoldsmobile

chances are it will throw codes again if thats the case..

as soon as you get the light again, pull the c odes and post them up, might be able to get a better idea of whats going on from there.

will do mate cheers

Rocky · « **Reply #10 on:** March 15, 2008, 05:44:26 pm »

If you want to sell it let me know

Gator · « **Reply #11 on:** March 15, 2008, 05:55:40 pm »

Quoting: Rocky

If you want to sell it let me know

it will be for sale at some point anyway but am always open to ideas

CJ-IROCZ · « **Reply #12 on:** March 15, 2008, 06:10:37 pm »

Should have bought a good one

Gator · « **Reply #13 on:** March 15, 2008, 06:23:32 pm »

Quoting: CJ-IROCZ

Should have bought a good one

bastid

art b · « **Reply #14 on:** March 15, 2008, 06:56:04 pm »

Quoting: Gator

Quoting: CJ-IROCZ
Should have bought a good one

bastid

i think you meant funny bastid....

you should check that there aint a turnip stuck in the air intake....

55starchief · « **Reply #15 on:** March 15, 2008, 06:57:29 pm »

Quoting: Gator

it just goes rough under at hard throttle

thats what you get when you run on moonshine instead of petrol

Gator · « **Reply #16 on:** March 15, 2008, 07:01:10 pm »

heh heh bastids

you mean it wont run on badger piss

FUBAR · « **Reply #17 on:** March 15, 2008, 07:11:04 pm »

Rob · « **Reply #18 on:** March 15, 2008, 07:11:35 pm »

FUBAR · « **Reply #19 on:** March 15, 2008, 07:12:39 pm »

Rob · « **Reply #20 on:** March 15, 2008, 07:14:31 pm »

I'd have beaten you to it Fub, but I had to have more badgers and a banjo....