The car dies after 2-3 seconds

[Swede2]

Hi guys. I dont know what to do... The day before car inspection here in Sweden did the car go well. But next day when I started it, it wouldnt go well at all... Mal code 32 from the Scanmaster, I checked EGR... today i blocked of EGR and still the same ****. The o2:s are all the time on 941. I reset the ECM and now does it not show any wrong code but its still the same sympthom.

I have checked some vac lines without finding any leaks. I have checked turbo/IC, and its not any leaks in thoose.

I am out of ideas... what can be wrong ? As I stated before, the car starts, goes up on 941 o2:s and dies after a few seconds. The tps is on 42 something, IAC is a bit higher often... like 60-70. BLM and INT is 128.

One funny thing... Yesterday did I start the car, and it would idle pretty good after a ecm reset. The o2:s down to normal 300-400 but BLM was 108 something. So I decided to go and fill up some gas in the tank. When I started the car again a couple of hours later the problem was back again.

Any ideas ? I had not done any mods to it before the problem occoured.

Daniel

 

[Lee_Burough]

Bump....

Your IAC is high....Reset it. Check your MAF connections....Can you put a known good MAF in there to see if it makes a difference?

Some heavy hitters will chime in soon with more help

Good Luck

 

[Lee_Burough]

Another site with instructions for adjusting your IAC

 

[Swede2]

Thx Lee.

The IAC is hard to set if I cant get the car into closed loop running ?

I have a stock Maf, I shall go out and change it now. Another thought I have, is that the o2 sensor can be smoked ?? Or would the car go even if it was unfunctional ?

Daniel

 

[Swede2]

It was not a maf problem, when I put the stocker on it was the same as before.

But I tested to put the foot on the gas pedal for a while, and the car goes rather well if I have gas on the engine. The o2:s will also go to like 300-500 and I hear a whistling sound. That must be a a vacum leak but where the hell is it in that case?!?! I have not found anything.

Daniel

 

[Razor]

When you reset the computer, the car will start in open loop. Meaning the O2 sensor doesnt matter. Iac will start high then start to drop.

If you have a vacuum guage, see what the engine vacuum is?

Another thing to check would be fuel pressure. Make sure its at 43-45 lbs line off engine running.

If IAC goes to zero after you start it.. then there is a leak after throttle body.

Leak on the IC or hoses around the turbo/IC will cuase issues with the MAF. Like a cracked IC.

Start on these.

 

[Quiky One]

If your 02 sensor was bad, you would throw a code 44 or 45. I doubt that's the problem if you havent used racegas.

Jason

 

[Swede2]

Ok then we can count away the o2 sensor...

Before I wrote here I checked the fp. It was around 42, but I only checked it with the ignition on and no running engine.

The IAC does not go to 0, its rather high as I said before, like 60-70 and when the engine die it will go to 150.

I will check the vacum pressure next time I am nearby the car.

I know its not a turbo/ic problem, I routed the maf pipe directly to the TB yesterday and the car was all the same.

Thx for all suggestions!

Daniel

 

[Swede2]

Hi!

I just wanted you to know that it was the EGR that went bad... I bought a new one and the car runned after I installed it.

Daniel