thomcasey
Well-known member
Thank you. I will do that and report my findings. I have also obtained a test TB just in case something is cracked with mine post plate.
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New stumble on initial press of accelerator pedal (SOLVED)
- Thread starter thomcasey
- Start date
thomcasey
Well-known member
That didn't change anything. Plugs were covered in soot. Cleaned and gapped them. No real change. Problems are all below 3k rpm. Maybe timing? I suppose I could check Monday evening
thomcasey
Well-known member
I went ahead and swapped out the TB for the once from my son's motor and the problem seems to be gone. So, something on my TB is leaking bad, even though it didn't present on the Boost Leak check. I ordered a used TB from PerformancePartout and will send it out to be cleaned and rebuilt when I receive it.
Curious. That's good news.
thomcasey
Well-known member
Yes, it is very curious. There is a FAIV Bypass plate installed, with a new seal. And it was working fine for about a week before I started seeing the issues. I am thinking maybe a crack developed from the bypass installation (primarily breaking the factory FIAV screws loose) and allowed the extra air to enter the system. I am installing a new ISC in the replacement TB today and then using link to adjust the idle/BISS to be sure everything is actually good.
thomcasey
Well-known member
Well, I didn't wait long enough. Stumble came back. Had my son sit in the car while it was idling and I injected brake clean at the base of the injectors and found this on Injector 1!!
Ahh. One of those got me once too. Amazing what a difference that can make.
thomcasey
Well-known member
Yea, so I ordered a PTE injector specific set. So, I am not really sure what is causing the -40° reading for the IAT, but that can be bypassed and troubleshot at a later date. Not tom mention, it will be easier to work it if the car runs right first.
thomcasey
Well-known member
Injector seals didn't fix it. Looked closer at my logs and saw that my Baro reading was -9.8inHg with the engine off (I am at 1100ft, so it should have been zero or positive. I heard may rumors about the OmniPower MAP sensors having quality issues (mine was only 10 months old) so I replaced it with a new AEM 3.5 Bar and she is al good now.
