Guest Lawn Posted August 24, 2006 Share Posted August 24, 2006 Well, I was experiencing problems a bit earlier where I really couldn't rev the engine that high.. in neutral it would hit about 4000 rpms and then it would go back down regardless of how hard I would push the gas.. In 1st gear, it would bring it down if I was approaching or near 3200 rpms, in 2nd gear, about 2600 and 3rd, about 2800.. 4th gear I could push back up to around 3200 rpms before it died down again and 5th, there weren't quite as much problems with the throttle.. When I had my previous car, I felt the same problems where it would begin to bog or kill the power while in gear, and pretty much, what I would have to do is push back in the clutch and try and re-catch the gear or so.. I later found out, that it was a dying/failed alternator.. So, I assumed that it was the same problem in the 280zx.. and I replaced the alternator.. However, it's still producing the same problem.. Anyone think they can help me with something like this.. or at least give a prognosis..? Thank you ahead of time.. Quote Link to comment Share on other sites More sharing options...
Guest Lawn Posted August 24, 2006 Share Posted August 24, 2006 "Hey did you check the exhaust manifold for leaks?? The same thing happened on my Volvo 240 Turbo and it confused everbody I talked to until I heard a slight hissing sound. It ended up a hairline crack when the castiron was cold but when the exhaust manifold warmed up the crack got bigger. With a exhaust leak before the turbo, the turbo cannot build pressure to turn the turbine and will not be able to boost good. And the engine will not rev past a point. It sucked that my top speed was 35 on the highway floored in 5th gear Hope this helps, Mark" I was informed of this when I first purchased the car.. damn it.. I'm a moron!! (Alright.. time to try and take it to the shop to get the exhaust manifold repaired..) Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted August 24, 2006 Share Posted August 24, 2006 I actually think the TPS connections need to be checked, cleaned, and the TPS adjusted. Mario Quote Link to comment Share on other sites More sharing options...
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