Cosmos

iTrader: (15)

Car ran great. I went over a bump today (construction) Car wants to die and idles around 400 rpm sometimes after I went over the construction bump hard. It ran like crap 3k and under. I had to hit the throotle quite a bit to keep it running. It was barley running at 400 rpm. This is a heads and cam car.

MY ECU is not secured down (98to99+ swap). Could it have been damaged by the bump and caused this problem?

Any ideas? Im going to test the fuel pressure by this weekend.

Doubledip

loose wire , earth connection... PCM is solid state so doubt a bump would hurt it.. more like a wire broken or loose terminal on sensor etc...

Cosmos

iTrader: (15)

Thats what bI was thinking but wanted to check.

Cosmos

iTrader: (15)

Well I capped the vaccum leak and it seems to run better. It idles low after it moves or is givin throttle, but I can now give it throttle and it comes right up.

I think I may have tuned my car with a vaccum leak. That would be the reason why it idled better than expected with the Trex, ported heads and upped compression over last years cam only set up

The vaccum leak is the vacuum port right next to the MAP sensor for the Heater controls. I thought I had plugged it but I guess not.

So I get to retune the car (planned on that anyone once I get a intake).

I hope my experience can help someone out in the same boat!

I also threw codes

p0102- MAF low signal. Ive had this code for 2 years. Going to check the fuse now.
p0108- MAP circuit high. THat makes total sense because the vacuum leak
p0117-Coolant temp sensor low input. Never had that before