Greeting everyone, I'm new here but not to the Z world. I was on Z31.com many years ago when the likes of Z-bum, Engloid, Al87t, Butter et al were around. So, I've been around too and this is not my first Z. It's actually my 12th. But I'm stumped, and I need some help.
The back story:
This is my first Z since 2009. It's an 87T and I got is as a non runner. There was much much butchery in the car. It didn't run because the "mechanic" that was trying to get it going cut the plug from the air diverter, tapped that into the #1 injector, plugged it into the #2 inject and ran the #2 injector lead to the air diverter. I was as baffled as you are right now. The ECU had two mystery diodes completely burned out, which I replaced. The car does run right now, mostly.
The fuel pump has been replaced, it has a new CAS, I have replaced the coil and wire and the power transistor. Today I am changing the MAF and possibly doing the plugs as well. I have gone over the vacuum lines and replaced those. I am getting code 21 from the ECU.
The car has a very slight miss at idle, and occasionally while driving around town. The problem really becomes apparent when I go up a hill. By the time I crest the hill the car is misfiring so badly it won't even move. I need to pull over, turn off, restart, and there is a 50/50 chance it will run "ok" after that. If I avoid hills I can drive it all day though this problem has cropped up once or twice while driving on a flat road at more than 80km/h. Also, if I do manage to get it up into boost it seems fine. Until I stop So the miss is under 3000 RPM roughly.
I've been through a lot with these cars but this issue has me stumped. Has anyone encountered something similar? I was thinking the CHTS, but it's not tossing that code at me. Nor the MAF of course, but I had one blow once and do similar, but not the same, things.
Thanks guys.
The back story:
This is my first Z since 2009. It's an 87T and I got is as a non runner. There was much much butchery in the car. It didn't run because the "mechanic" that was trying to get it going cut the plug from the air diverter, tapped that into the #1 injector, plugged it into the #2 inject and ran the #2 injector lead to the air diverter. I was as baffled as you are right now. The ECU had two mystery diodes completely burned out, which I replaced. The car does run right now, mostly.
The fuel pump has been replaced, it has a new CAS, I have replaced the coil and wire and the power transistor. Today I am changing the MAF and possibly doing the plugs as well. I have gone over the vacuum lines and replaced those. I am getting code 21 from the ECU.
The car has a very slight miss at idle, and occasionally while driving around town. The problem really becomes apparent when I go up a hill. By the time I crest the hill the car is misfiring so badly it won't even move. I need to pull over, turn off, restart, and there is a 50/50 chance it will run "ok" after that. If I avoid hills I can drive it all day though this problem has cropped up once or twice while driving on a flat road at more than 80km/h. Also, if I do manage to get it up into boost it seems fine. Until I stop So the miss is under 3000 RPM roughly.
I've been through a lot with these cars but this issue has me stumped. Has anyone encountered something similar? I was thinking the CHTS, but it's not tossing that code at me. Nor the MAF of course, but I had one blow once and do similar, but not the same, things.
Thanks guys.
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