Hey all finally after the forum was gone for an eternity(seemed like it) I can post about a prob that I have been having with my gtu. Its an 89 model year like some of you know. Normaly I do a full 1at 2nd and 3rd gear redline run to hell keep carbon at bay on the internals of my engine. The problem here is that when I try to redline the car starts to stutter around 7600rpm(8k redline) The only codes that I am seeing are the ones for the parts that I have removed like the split air solenoid/acv and the solenoids on the rats nest(except for the VDI). Any pointers at what parts to look at for possible problems would be great. Thanks!


Santiago

 

any tips? I don't know what it could be I was thinking a bad spot on the tps or a failing coil may be the culprit but I haven't had the chance to test those yet. I need to find my dmm.

 

bump

 

..... unballance flywheel. bad u joints. i dunno.....

 

Is stutter like hesitation? Grounding maybe?

 

Have you checked your plugs? I had a similar thing (although, at lower rpm), and found one of my leading plugs was badly worn.

 

i had a similiar problem, heavy stutter after 6K and would not accelerate past. It cleared up when i removed my HKS filter and re-installed the stock air box. Pulls all the way through now Hope this helps.

Pat

 

When is the last time you have changed you spark plugs/wires?

 

Definately try the tps, I've seen it happen quite a few times. My 86 gxl did that too.

 

Santiago - Although I'd take a look at the TPS, the other possibilitly i've heard of is that the grounds aren't good enough for the coils, or that the battery/alternator isn't putting out like it should... I'd look at those..

Good luck!

 

this was my problem too.

 

Hey, I had EXACTLY the same problem, couldnt get it to redline and it just stuttered. Check to see if you have a vacuum leak, because I had a leak at my lower manifold. When I fixed the leak, I could hit redline with no problem.

 

As mentioned before, definately check the TPS. Shoot, i would try all of the suggestions, starting from the smallest (cheapest) thing to the biggest.

I had random hesitations and it turned out to be my grounds, pull out that multi - meter.

Good luck.

Justin

 

I had the same problem, checked all the grounds and found nothing wrong. I did all the above mentioned and found nothing. After a day the battery was to weak to turn the car over. Changed the battery and it solved the problem.

 

Sounds like something to do with ignition, rather than the TPS, as the problem sounds to be RPM based rather than TPS load based... I would say spark plugs or wires should be checked first.