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2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.
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Old 05-26-2010, 01:11 AM   #1
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Exclamation P0089 (fuel pressure regulator 1 performance)HELP!

ok i got this code and my car is iddling like SHIT... it turns off and everything... what could this possibly be
please help me!!!

thanks!
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Old 05-26-2010, 01:27 AM   #2
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i got this code a few times at the track but never caused me a problem i think i took my air filter off one of the times maybe u have an intake leak


Quote:
Originally Posted by cardelino18 View Post
ok i got this code and my car is iddling like SHIT... it turns off and everything... what could this possibly be
please help me!!!

thanks!
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Old 05-26-2010, 02:14 AM   #3
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This code is caused by your actual fuel pressure being above or below your commanded fuel pressure for a certain amount of time.

Basically your car didn't get the fuel pressure it was expecting, when it expected it. Off hand, I'd imagine this could be due to the fuel pump going out or a clogged fuel filter.

I had this pop up on a long 5 hour trip, where I did a few WOT runs every once in a while to mix things up. After a while the code went away on its own in my case. If your car is not idling properly, I'd take it in for warranty work on possibly the fuel pump going out.
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Old 05-26-2010, 07:03 AM   #4
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I got this code right after getting tuned didn't affect anything that I noticed, I cleared it and it never came back
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Old 05-26-2010, 10:53 AM   #5
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I got this code once too, Trifecta tune engaged did a few 2-3 pulls and it popped up. Cleared it and stayed off.
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Old 05-26-2010, 10:55 AM   #6
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Quote:
Originally Posted by Stamina View Post
This code is caused by your actual fuel pressure being above or below your commanded fuel pressure for a certain amount of time.

Basically your car didn't get the fuel pressure it was expecting, when it expected it. Off hand, I'd imagine this could be due to the fuel pump going out or a clogged fuel filter.

I had this pop up on a long 5 hour trip, where I did a few WOT runs every once in a while to mix things up. After a while the code went away on its own in my case. If your car is not idling properly, I'd take it in for warranty work on possibly the fuel pump going out.
i cant get it into warranty... they wont fix it my dealer is too gay about that...
where would the fuel filter could be at?
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Old 05-26-2010, 11:15 AM   #7
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There is a how-to on the fuel filter if you search, its in the same location as every other Cobalt.
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Old 05-26-2010, 12:02 PM   #8
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Quote:
Originally Posted by Gimpster View Post
There is a how-to on the fuel filter if you search, its in the same location as every other Cobalt.
Damn, I didn't think the LNF's had one other than the sock in the tank.
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Old 05-26-2010, 08:45 PM   #9
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Quote:
Originally Posted by Iam Broke View Post
Damn, I didn't think the LNF's had one other than the sock in the tank.
That's the one I'm referring to.

If you've got a clog/restriction upstream, then the high pressure fuel pump may not be able to flow enough fuel.

I don't think it's got a second one, but if it does somehow, then that could be another place to check.
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Old 05-27-2010, 12:21 AM   #10
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there are 2 fuel pumps... the one in the tank and the one in the motor which is the high pressure pump...
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Old 05-27-2010, 01:15 AM   #11
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Quote:
Originally Posted by cardelino18 View Post
there are 2 fuel pumps... the one in the tank and the one in the motor which is the high pressure pump...
Yes.

The code should be for the high pressure one. The low pressure one feeds the high pressure one and has the fuel filter. I'm saying that if the fuel filter in the low pressure one has a bunch of junk in it or something, then it may not be able to flow enough fuel to the high pressure fuel pump.
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Old 05-27-2010, 01:15 AM
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