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Thread: IMRC problems??

  1. #1

    Default IMRC problems??

    Ok so i have a 00 Duratec MTX. And i don't know when this started but when I'm at WOT at about 6500 RPM my tour just falls on its face. it did not do this before i don't know when?...... (i don't do WOT often) It seems like it wants to go but gets there and then poof it feels like i hit the brakes then stay at that given speed. I know there's not much more RPM to go any way but what could this be caused by? i can feel my secondaries kick in some times at 3.1k and times as late as 3.6k. So is my IMRC just being stupid or do i need to start looking for another magic box???
    I searched for awhile but couldn't find any one with the same kind of problem.
    Thanks.
    Contour SE wrecked on 5/18/10 - Towed 6/20/10 With Nothing left on it.
    Bought SVT #4595 on 6/17/10, Black/MNB 3L Hybrid, CAI, 8.2MM TTV, CFM Shorty, 65MM Rustang ported/polished TB.
    SVT # 535 Found Dead.

  2. #2
    Join Date
    Jan 2006
    Location
    Wilkes-Barre, PA
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    616

    Default

    How fast are you going at this point? There is a speed limiter on these cars set to about 112 mph (there is none on the SVT). Once you reach the limit, the car does almost exaclty what you described (I don't know the specifics on how this works, but you can feel the car trying to slow down even though you are at WOT).

    If you were hitting the speed limiter and you experienced this, you have nothing to worry about, the car doing what it was supposed to do. If you weren't going that fast then there could be more to this.
    1999 SVT Contour - Silver Frost - 150K - #2397/2760 - B&M Short Throw, 17" Superior Scoundrels, Knauberized
    1999 SVT Contour - Black - 99k #2243 of 2760

  3. #3
    Join Date
    Sep 2000
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    Thousand Oaks, California, USA
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    7,357

    Default

    There is also an engine rev limiter that kicks in at 6750 RPM that you might be experiencing. The engine revs so quickly that the tach may not have caught up so you are reading a slightly lower speed when it happens. It has always been there although you may not have experienced it earlier in your ownership.

    The rev limiter can be raised with some of the tuning devices, but you won't gain much of anything unless you have an SVT with the hotter cams.
    Jim Johnson
    98 SVT
    03 Escape Limited
    10 Fusion Sport

  4. #4

    Default

    Quote Originally Posted by 96MystiqueGS View Post
    How fast are you going at this point? There is a speed limiter on these cars set to about 112 mph (there is none on the SVT). Once you reach the limit, the car does almost exaclty what you described (I don't know the specifics on how this works, but you can feel the car trying to slow down even though you are at WOT).

    If you were hitting the speed limiter and you experienced this, you have nothing to worry about, the car doing what it was supposed to do. If you weren't going that fast then there could be more to this.
    Around 30. Was going from first into second. And i must have had my limiter removed cause i have defiantly had it past 112 more than once.

    Quote Originally Posted by Big Jim View Post
    There is also an engine rev limiter that kicks in at 6750 RPM that you might be experiencing. The engine revs so quickly that the tach may not have caught up so you are reading a slightly lower speed when it happens. It has always been there although you may not have experienced it earlier in your ownership.

    The rev limiter can be raised with some of the tuning devices, but you won't gain much of anything unless you have an SVT with the hotter cams.
    That is about what it feels like now that i think about it.... When i go to work today i will whomp through 1st, 2nd and 3rd and see what happens.
    Thanks a ton already.
    Contour SE wrecked on 5/18/10 - Towed 6/20/10 With Nothing left on it.
    Bought SVT #4595 on 6/17/10, Black/MNB 3L Hybrid, CAI, 8.2MM TTV, CFM Shorty, 65MM Rustang ported/polished TB.
    SVT # 535 Found Dead.

  5. #5

    Default

    I got it. It was the limiter i guess when i would look after it happened i never got to see the tach hit the limiter.
    Thanks for helping me discover my limiter.
    Contour SE wrecked on 5/18/10 - Towed 6/20/10 With Nothing left on it.
    Bought SVT #4595 on 6/17/10, Black/MNB 3L Hybrid, CAI, 8.2MM TTV, CFM Shorty, 65MM Rustang ported/polished TB.
    SVT # 535 Found Dead.

  6. #6

    Default

    Chances are the speed limiter has not been removed. You would be suprised how poor the factory gauges are.
    2000 Silver SVT

  7. Default

    Quote Originally Posted by tsSVT View Post
    You would be suprised how poor the factory gauges are.
    mine governs at precisely 112
    56 DeSoto (Viper powered) - father/son project under construction
    99 Contour Sport V6 122k - nausea inducing stereo

  8. #8

    Default

    There's no way i still have mine cause i have had it up to like 150 MPH. And almost ran out of gear.
    Contour SE wrecked on 5/18/10 - Towed 6/20/10 With Nothing left on it.
    Bought SVT #4595 on 6/17/10, Black/MNB 3L Hybrid, CAI, 8.2MM TTV, CFM Shorty, 65MM Rustang ported/polished TB.
    SVT # 535 Found Dead.

  9. #9
    Join Date
    Mar 2004
    Location
    Grand Rapids, Michigan
    Posts
    637

    Default

    Quote Originally Posted by silver rocket View Post
    There's no way i still have mine cause i have had it up to like 150 MPH. And almost ran out of gear.
    What did 150 feel like in a Contour?? Never had the chance to speed test my SVT. My BMW was tested constantly, but I was young and had a better radar detector LOL.
    '83 Rabbit GTI

  10. #10

    Default

    Quote Originally Posted by fornetti14 View Post
    What did 150 feel like in a Contour?? Never had the chance to speed test my SVT. My BMW was tested constantly, but I was young and had a better radar detector LOL.

    It was rather nice actually i was not scared at all to take it up further but i don't have a 6speed. I don't have radar detector i just went to highway 364 and put the plastic pedal to carpet and went. Mine was all over the road cause i needed outer tie rod ends so i was left then right etc. It was really loud though my contour has so damn much road noise i can't believe it.
    If you have any idea's why mines so loud i would love to hear it.
    Contour SE wrecked on 5/18/10 - Towed 6/20/10 With Nothing left on it.
    Bought SVT #4595 on 6/17/10, Black/MNB 3L Hybrid, CAI, 8.2MM TTV, CFM Shorty, 65MM Rustang ported/polished TB.
    SVT # 535 Found Dead.

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