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I own a 98 contour se 2.5. car has 100k miles, but recent tune up, including plugs, wires, airfilter, and "performace" Y-Pipe&Cat. Oh yeah 5-spd. My problem is that the car runs fine 60% of the time and then for no known reason will get a bog type problem under full thottle at about 3500-4000 rpm, at which time the exhast will get louder and the engine runs flat/ no pwr. And at this point it doesn't tach fast. So i'm hoping that someone has run into this type of problem and has a cheaper fix.
Thanks Jason
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Last edited by Tony2005; 10/27/05 07:59 PM.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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Great! i had no idea that i had an IMRC. lol Well i will check to see if this is a possible cause. Also i have not taken the car in for the codes to be read. I just spent too much money a month ago and an alternator problem. What happened to the good old days of Chevy V8s w/o any computer/sensor crap?
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Originally posted by Tony2005:
Edit. And for the benefit of those searching in the future. The IMRC is under this plastic cover.
http://img256.imageshack.us/my.php?image=cover2vd.jpg
man that is a not good looking pic lol.
1999 Cougar V6 MTX
SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit
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Originally posted by 99cougar:
Originally posted by Tony2005:
Edit. And for the benefit of those searching in the future. The IMRC is under this plastic cover.
http://img256.imageshack.us/my.php?image=cover2vd.jpg
man that is a not good looking pic lol.
99, this isn't a beauty contest.  This is the Troubleshooting Forum. 
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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Question I just changed the spark plugs and wires. I did check to make sure everything was fine there, but this IMRC, how does it go bad, could it have been bumped during tune-up.
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Originally posted by RamAir00:
Question I just changed the spark plugs and wires. I did check to make sure everything was fine there, but this IMRC, how does it go bad, could it have been bumped during tune-up.
Overheats. Hentz is why in that pic the Engine cover has holes drilled where the IMRC is. Allows the heat of the IMRC to radiate off the engine better. Therefore allowing the IMRC to cool off and last longer.
98 Corolla LE 1.8L DOHC 1ZZFE
TEIN H.Tech Springs
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Tsudo Axel Back Exhaust
... if a jelly fish stung me.. would you pee on the wound?
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Originally posted by Tony2005:
Originally posted by 99cougar:
Originally posted by Tony2005:
Edit. And for the benefit of those searching in the future. The IMRC is under this plastic cover.
http://img256.imageshack.us/my.php?image=cover2vd.jpg
man that is a not good looking pic lol.
99, this isn't a beauty contest. This is the Troubleshooting Forum.
i know...i know why there is wholes in the cover...i was mostly talking about the dirty engine as a whole...and the missing sticker on the UIM. but hey...i wish i had that intake manifold...it is still and SVT unit unlike mine 
1999 Cougar V6 MTX
SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit
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The IMRC sounds like the culprit, but if that doesn't fix it look at the wires and plugs. I had issues above 4000rpm on two seperate occasions on the same engine. First time it was the crappy plugs, the second time it was the crappy wires. I did a tune up before knowing any better, but now the cars get only OEM equivalent plugs and wires.
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'98 "Sport" Pacific Green
'98 E0 SVT Silver Frost
Pictures
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Intake Manifold Runner Control (IMRC) failure? Any CEL codes?