I have been having some engine problem, my rpm needle would at times drop at idle from 900 revolutions to the point where i thought it would just stall but it doesn't. I also noticed that every time i would put it in first gear and let go of the clutch slowly, that is with out accelerating, the rpm needle would just drop instantly to about 300 i would then quickly accelerate but rpm needle wont rise quickly as it should. Some have said it might be a vacuum leak, others are saying to check the iac/isc valve. I dont know really where to start looking, any feedback would greatly be appreciated. By the way i have 420a 2.0L engine. also, I check the spark plugs that i had recently replace, and noticed that one or 2 plugs had oil on them, i doubt the plugs are causing the problem. Thanks in advance.

Might want to start in the correct forum

Moved

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

wiki home page:http://www.2gnt.com/index.php?d=bullettdsm

You should check out your IAC. Its either behind the throttle body or behind your intake pipe, can't remember exactly which one.

-Ed

'95 Eclipse RS-T
'91 Laser RS (Sold)