roadsterdoc

I have a 94 that keeps lighting the CEL during highway cruising. Mechanic says it's throwing a EGR code. Funny thing is that it has a new EGR.

I don't care if the EGR works, but I don't want the CEL to come on, esp since it needs state inspection soon. I don't want to monkey-wire in a relay to spoof the ECU either.

Will swapping in a 1993 (non-EGR) ECU solve this problem? Will there be any other issues or problems using a 93 ECU in a 94 car?

Thanks!
Doc

ps- I don't want to put a PFC in this car. It's staying stock. My other FD has one (and more).

FormerPorscheGuy

Hey Doc, the 94 has a different EGR valve then the 93.

http://www.rx7turboturbo.com/robrobinette/egr.htm

FormerPorscheGuy

Hey Doc,

Houston only has the two speed emisions test. Try the denatured alcohol trick.

JCW

roadsterdoc

Thanks for the info, but neither tip will prevent the CEL (check engine light) from coming on.

I am thinking that a 93 ECU will fix this and Rob Robinette's site confirms it. So the question is, is there any drawback to using a 93 non-Cali ECU in a 94 FD?

roadsterdoc

bump...Maybe I should start a new topic?

"So the question is, is there any drawback to using a 93 non-Cali ECU in a 94 FD?"

turbojeff

iTrader: (30)

The non-cali ECU will work just fine in your 94 and prevent a check engine light for the EGR.

roadsterdoc

THANKS!!!!