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Discussion Starter · #1 ·
Well I am having problums with the 1jz engine in this supra....It is running REALLY REALLY rich and the tach needle keeps going all over the place. Some times it is ok and other times it runs like shit. It sounds like I have a rev limit @ 3 k now sometimes. Tried the ignitor and it is not that for sure. Nothing to do with the cat or the o2 sensor b/c I unpluged both and still runs like crap sometimes good sometimes bad. Anyone know what might casue this ?
 

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Now with 0JZ
Joined
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1,185 Posts
I would start off by checking the signals going to your injectors to make sure your ECU is good. Pull off the clip to an injector, and connect a lightbulb to the two wires. If the light flashes, you're good, if it stays on, you have a bad injector driver in your ECU.

Edit: sorry, didn't notice the post date on this.
 

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Supras are never 'done'
1989 Toyota Supra
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601 Posts
ROPADOPA said:
check your codes
They tried but the ECU wasn't going into test mode.

Darrell, I'm sure I read you fixed it, but what was the problem?
 
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