We replaced the vacuum and coolant lines on Matt's '89 TII tonight, and it's still having all of the same problems. We checked the engine codes, and it came back with 30 Solenoid valve - split air bypass and 38 Solenoid valve - accelerated warm-up system and air supply valve, neither of which I know how to deal with. The good news is that his TPS code went away, but the car still runs rich enough to burn our eyes and has NO power. It idles fine, but we haven't checked the compression yet, so that still may be an issue. Anyone have any other ideas?



One thing that bothers me is that I could disconnect the O2 sensor while it was running and it wouldn't change anything, like it was in limp-home mode, but it didn't change after resetting the ECU.



https://www.nopistons.com/forums/pub...IR#>/dunno.gif

does it rev normal etc ? maybe a fuel injector is stuck open ???

It revs really slowly...I was thinking an injector could be stuck open, but how would you check that?

i don't know. might as well take out the injectors and have them cleaned and put in new orings..... that MIGHT be the problem..... maybe something to do with the fuel pump...hmmm

Perhaps we should check the fuel pump voltage at idle, wot, etc...



Taking out the injectors would be too big of a deal, i guess. I'm just trying not to put Matt into the poor house with the rest of us...lol.

Plus I don't want him to have to keep driving what he's stuck with right now.



:rice: X 10

ROFLMAO!!!! if its flooding out.... sounds like a bad injector or two to me but who knows its an rx7 it could have 40 bad parts... maybe bad AFM ?

I have a brand new performance python fuel pump that I haven't put in yet. Should I try putting that in? It makes sence it is an injector seeing as how I was wraping on it pretty hard. 'Come on guys help me i'm having to drive a ricer honda untill I get Roxy going again!!! :rice:

If you have enough fuel to run rich I doubt your fuel pump is the problem.

your getting those codes because those are unplugged, i think the split air is on the acv, and aws is in the back of the manifold.



mike

what is this??? And why is there a black two prong connector attached to it that dosent plug into anything??? Maybe it will help?



thanx,

-Matt

that's the AWS. leave it unpluged. it's evil. it's not doing any harm like that.

what was with the talk about frozen fuel plates I heard before??? What is that? Could that be a problem? https://www.nopistons.com/forums/pub...IR#>/dunno.gif

thats one of the codes. you should actually plug it in, the ecu is injecting the fuel for the additional air that the aws is suppoed to put in



mike

where does it plug in? I don't see a spot???

It plugs into the blue headlights on the Cibic, but don't race the Del Sol.

Hey Ed, why shouldent I race the Del Sol??? Ha Ha Why?

"Because you wouldn't win." [/cocky]



My favorite comment of the whole day (made by me, of course) was:

"What, you didn't know your car wasn't turbo when you bought it?"



Better than "Smells like dead guy."

Well Ed here is the deal, it turns out Neal(Del Sol) bought a stage 3 turbo kit w/front mount from Greddy. He is not doing ANYTHING to his engine, like no fuel mods, better rings ANYTHING and his engine has about 118.000mi on it. How long do you give him?

Your problem with running rich and slow revving, low power sounds very familiar to my problem.



It turned out to be the injector drivers on the ECU were burnt out.



The only indication I had of this problem was the rear rotors spark plugs weren't fouling up when it was running. Other than that, EVERYTHING tested within spec. Including the ECU, it gave no codes or indication of malfunction.



You might try swapping ECU's with someone who has a known working one or using a DMM to test the injector leads off the ECU at idle.



BTW you can test the injectors by attaching a ground and a 12 volt lead to them and listening for a clicking sound.

Anyone got a Series V ECU that they'd sell for cheap and/or loan out for testing? If it's within 100 miles of Des Moines we will go out and get it Saturday.