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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

 
 
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Old 04-13-2009, 09:18 PM   #1
Max777
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Default Idle issues, Car runs better with BAC unplugged, stalls when coming up to a stop sign

Ok, this is a continuation of a previous problem.

The car starts just fine, then idles kinda high, and then the idle goes down and it stays idling. Sometimes the car will die if it isnt fully warmed up. When I try to press the gas at all, the engine just falls flat on it's face and dies.

I have now gotten an RTEK 2.0 for my car and took some logs, however the ECU will not let me disable the MOP for some reason (says "unsuported") for whatever reason.

Interestingly enough, I hooked up the stock ecu and the car started and ran, but would not rev, now that I finally hooked up the RTEK the problem remains. I got some data logs but i dont know how to upload them to the PC?

One thing I noticed is that the AFM air temps and IAT sensor aitr temps varied by 20*F. I dont know if this afects anything on this car.

Some things I did:

made sure there are no vaccum leaks when I reassembled the manifold the second time.

removed emissions, all new vaccum hose, put RTV and bought new gaskets for everything, ziptied vaccum caps, and just generally made sure everything is nice and good.

Tested TPS: on the bench it checked out ok, then I adjusted it with a self made TPS tester yesterday, it was way out...

Tested AFM, here are the results:

E2-Vs terminals: closed: .400K ohms open: 114 ohms

spec is:closed: 200-1000 open: 20-800

E2-Vc closed-open: 279 ohms value does not change between closed/open.

E2-THA: @ ~45*F I got 3,693 ohms, this in alldata specs is around ~32*F, so this value seems in spec.

I tested the TPS that originally came with the car and it checked out ok. I DID buy a new throttle body and another sensor that came with that was bad... so i put the OEM one on.

I will have more info in a bit.






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