Hey,

Is there anyone in SE CT that has an obd2 GSR computer that I could try in my car?

I have replaced everything in the car, from the motor to the dist to the injectors, and my #3 cyl runs a lot hotter than the others.

My original motor died @ 135k, with a completely wooped #3 cyl, so thinking that a complete replacement would fix it I bought a nice new motor from H-motors. Well same thing is happening, and I just wanted to try a computer to see if maybe I have a harness problem before this one quits on me.

I have even tried swapping injectors from other cyl, and the same issue exists.

Thanks,

Adam

 

So you spent $3000+ on a new motor before eliminating possible problems?

Sounds like an injector isn't working, but you said you switched them around, and still not difference. Sounds like a problem in the harness. Check the injector harness and clips.

 

Do you know where the white wire on the injectors grounds?

Yes, lol, it's true, $3k and still have same problem, actually $2k since I did all work myself.

The motor had to be replaced and I need the car for day to day use.

The old motor was on it's way out when I noticed the spark plugs, and exhaust temps using an infrared thermometer. Keep in mind, no engine codes until the day it coughed the cylinder.

I checked the inj plugs, and measured voltage at the computer output and inj inout points, and they are spot on. Ofcourse voltage is not everything.

Thanks for response!

 

Check for power on the #3 injector clip, could just be the clip, back probe it if you get no power at the clip.

 

I did a voltage check at the computer output and injector clip and they are dead on.

There is obviously more to it than voltage, but a regulator multimeter won't see the pulses.