had the same problem after i replaced my cracked intake manifold on my 98gt.
what my problem turned out to be was a inproper connected vacuum line.
first rev your engine and see exactly where and when it laggs. if it doesnt you might have a tranmission problem. dont get to any conclusions yet untill you
do the following things that might help:
- check vacuum lines(i dont know but on my 98gt, there is a little intake bypass line that has to be connected properly to the intake manifold otherwise the engine will not run correctly)
- check your MAF or MAS sensor & wires they might not be connected to the ECM properly
- check your belts, they "might" be busted, even after 26K miles
- check your alternator and battery.
- check your ECM, the chip you've installed could have messed up all the air/fuel mixture settings at specific RPM's
- check your intake tube, it might be jammed somehow(could be possible)
- check the engine timing
- check your exhaust, from headers to tips, you might have something big in there
*******do this only if the suggestions above did not help******
- check your fuel pump, fuel filter, and fuel injectors, they "might" be jammed
- check your intake manifold, it might be jammed as well
- check your ignition coils, ignition wires, and plugs they might not be firing properly, and you might be "running on 7 clilyinders" after 3000rpm, which hurts the timing. (that might cause the acceleration lag)
This should keep you busy for a while, and I Hope that the suggestions above will fix your problem.
dont forget that, you can do most of the things above in AUTO ZONE for free or minimal charge.
Let me know if you have any further questions.
P.S.: dont worry about the exhaust heat, its normal, mine gets little warm too after few hours of driving.
|