95 High RPM Problem
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Joined: Sep 2005
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From: Taylorsville UT
95 High RPM Problem
I just recently obtained a 1995 Auto (69k miles) and it seems to have an issue shifting during WOT. During normal driving the car behaves great and has no problems at all. If I stomp on the pedal, the car will downshift and really start to pull. After a couple of seconds the car seems to bog down and I really lose power. It seems like the only happens at very high RPM's, maybe even redline. The first auto shop I have taken it to said that is normal and the car is just hitting the rev limiter and cutting fuel. If that is the case, shouldn't the trans be shifting at or right before the redline before the limiter cuts off fuel? Anyone got any idea what this could be? Or even better, anyone know any decent vette mechanics in Utah?
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
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Rev limiter kicks in at 5800 assuming that the car is still stock.
I'm chasing down a miss or sputter at 5000 RPM. Haven't found the problem yet.
Try changing the fuel filter first and see what happens.
If it's an automatic it shouldn't be hitting the rev limiter unless you are manully shifting it.
I'm chasing down a miss or sputter at 5000 RPM. Haven't found the problem yet.
Try changing the fuel filter first and see what happens.
If it's an automatic it shouldn't be hitting the rev limiter unless you are manully shifting it.
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You guys are talking something that I tought it was not important. Last weekend I pushed my 95 to her newest limit. She climbed to 168MPH, in the process I noticed RPMS going pass the 6000K RPMS and I was wondering, what the heck?!@#$? I was under the impression that LT1s have a rev limiter at 5600 RPM. I bought the VETT used and I'm not aware if it has a re-programmed ECM. FYI, the cooling fan works at the stock temp. 
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From: Taylorsville UT
Fuel Filter was replaced and that did not fix the problem. I took the car to a dealer and they told me it was a problem with the Optispark distributor and wanted to charge me close to $1000 to replace it. At this point I am looking at some of the alternative systems like the DelteQ because I can get it for less and install it myself. My computer is not throwing off any codes so is it fairly same to assume this misfire is likely caused by the high voltage side of the Optispark and not any of the sensors? Are there any kind of tests I can run to further determine what is causing this high-rpm misfire?
