ok i got a 99 cavalier 2.4 which i blew up last november so i spent all year buying new after market parts for it this is what i have done to it

started with a stock 2.4 motor
dc sports header
act proformance clutch stage 1
ported and polished 2.4 head with new valves, seals and all gasket matched
stage 2 comp camshafts
2.4 high pressure oil pump-
3 layer head gasket
2.3 HO intake manifold with adapting spacer-
2.3 LO throttle body-
2 inch in 2 inch out magnaflow hi flow cat
cleaned block
new head bolts
new timing gears
new timing chain
new timing chain guides
new timing chain tensioner and shoe
new cam housing gaskets full set



ok so now heres the problem i got the car running but when the car warms up all that happens after 2000 rpm it boggs out and it will only do it when its cold then once it warms up it boggs out after 2 grand i went all over my vaccume and still does the same thing can someone help me out please

so let me get this straight...

cold = runs fine...

but when it gets to operating temp it boggs out after 2 grand...

Timing maybe?
Spark? Ignition?
Fuel? Pump/Injectors?

also i assume with the clutch you got the matching stage 1 pressure plate?

yes matching pressure plate
either of those wouldent be it because it would run @!#$ty from start right?

it eliminates physical timing... thats it...

timing could still go off from a bad sensor...
Fuel and ignition are affected by heat

Any DTCs? (codes)



Edited 1 time(s). Last edited Wednesday, September 26, 2007 12:37 PM

check your engine grounds as well... that one just hit me in my 97


1994 Ford Mustang Cobra

1997 Sunfire GT