2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Oil Metering Pump

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Old Oct 9, 2003 | 06:35 AM
  #1  
ElusivExGTUSxImage's Avatar
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From: Providence RI
Oil Metering Pump

alright heres my problem in a little more detail...from idle if i floor the car, the RPM will jump to about 1 1/2 - 2000 RPM and the fuel will cut off ryte away...thats wen i see the RPM drop back to idle and in about 2 seconds while still holding the pedal to the floor the Exhaust will POP!!! and a cone shaped flame will shoot out of my N1's and pieces of converter will come out with it all burnt....it feels as if something is clogged...could it be the injectors? because if i slowy gas it, the car will reach to about 5000 rpm smoothly then cutt off again as i try to reach 6000....im hoping its not the OMP because right now im trying to remove it and its a pain in the *** to get to the bolts...especially since i cant get the clutch fan out of the way *STRIPPED BOLTS IN A CRAMPED AREA SUCKS*
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Old Oct 9, 2003 | 07:08 AM
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From: Orange Park FL (near Jax)
I don't see the connection between the OMP & the cat?

You could have a clogged cat.

An OMP problem on your 89 will give a check code.
If you're not getting a check, I would not mess with the OMP.
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Old Oct 9, 2003 | 09:15 AM
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1987RX7guy's Avatar
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From: Laredo, Tx
If peices of your cats are comming out dont you think it MIGHT be the cats?

The MOP has nothing to do with that kind of stuff except for the fuel cutting off which resembles limp home mode.
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Old Oct 9, 2003 | 11:44 AM
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From: Providence RI
i kno its not my cat because for one thing its a brand new cat...and another thing this problem happened b4 i changed my cat...my old cat which i thought was the problem was completely gone when i took it out to check it...i mean u can look thru it from one side to the next...a big gaping hole was all that was left..so therefore it cant be the cat...thanx for the input tho guyz
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Old Oct 9, 2003 | 12:20 PM
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1987RX7guy's Avatar
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From: Laredo, Tx
Have your injectors chealend. Maybe they are leaning out the mix and making **** burn too hot.
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Old Oct 9, 2003 | 12:40 PM
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Dirty injectors will not result in a lean condition. They will result in a rich condition.

Problem number 1 is definitly damage to the cat. It sounds exactly like the symptoms of a clogged cat. Since your car is shooting flames under no load, you are probably running excessivly rich.
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Old Oct 9, 2003 | 12:45 PM
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Ok my bad but wouldn't failing injectors not be able to hold up the need for fuel? That is what I should have typed not dirty :-/

anyhow servicing them would help out in any case
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Old Oct 9, 2003 | 12:57 PM
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From: London, Ontario, Canada
Dirty/failing injectors tend to stick and not close properly, thus dumping fuel into the engine.
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Old Oct 10, 2003 | 11:25 AM
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From: Providence RI
so the problem might be the dirty/failing injectors? because my car does seem to be running too rich...aye another thing i successfully removed my first 2 injectors that lye under the throttle body...and i encountered another problem...i cant seem to take off my top half of my intake manifold..i think it might be siezed up because i removed all the bolts but it still has a death grip....what could i use to solve that problem? im desperate because i need to get to my other 2 injectors that lye under the intake manifold...
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Old Oct 10, 2003 | 12:42 PM
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1987RX7guy's Avatar
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From: Laredo, Tx
Buy a haynes manual if you don't have one. It will explain all the bolts and connections you need to undo to remove the UIM
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Old Oct 10, 2003 | 03:33 PM
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From: London, Ontario, Canada
You're forgetting the bolt in the middle, or one of the brackets at the front.
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Old Oct 12, 2003 | 10:30 AM
  #12  
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From: Providence RI
nahh i got all the bolts cuz i removed my frends manifold to get his injectors out...and it popped out piece of cake..i think it was because he recently got his morot rebuilt...but my shyt is not commin out for shiet...and yea i have a haynes manual...not like it helps much tho
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