timing or foul out at 3000+ RPMs? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-29-2004, 11:03 AM   #11
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Don't u have a DIS 4?

Check injector resistances, fuel pressure?
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Old 04-29-2004, 11:41 AM   #12
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Quote:
Originally Posted by Nytro67
timing or foul out at 3000+ RPMs?
Does this happen at exactly the same rpm (or real close) every time? If so, I had a similar problem but it was the crank sensor and something else. Not as likely as the plug and wire fix, but worth mentioning.
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Old 04-29-2004, 12:55 PM   #13
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Ok I might be wrong I'm still learning about car and all but I had an idea. My car kept losing power around 3000rpms... It turn out to be the fuel filter... If you did have a case of bad gas that might be something to check... It'* farely inexpensive too. Good Luck! *kiss* to the bonne. Hope she feels better!
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Old 04-29-2004, 12:59 PM   #14
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i dont have the DIS-4 installed yet. i only had it for 5 months. i got the MSD coil packs on tho.
i would think if the TCC chuggled it would throw some kind of a code wouldnt it? that could be it also tho. It doesnt seem to happen at the same RPM. If im going 80 in OD then step on it, and it down shifts twice, it starts gurgling. IF im going 40 in D and i punch it so it downshifts twice, it does the same thing. if i start off the line and floor it, it does the same thing.
It actaully seems to be getting a little better. i had about an 1/8 tank left yesteday, filled it up with Mobil supreme, and drove home. then i put 2 bottles of STP in this morning before i left. it seemed a hair better this morning on the way in but its ahrd to check it in the 2nd worst rush hour in the country


thanks for all the ideas fellers. I will let ya'll know one way or the other what fixes it...

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Old 04-29-2004, 01:54 PM   #15
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When mine was doing similar things I could recreate it easily by putting the car into 1st or 2nd gear (depending on how fast you want to go) and start driving. With it stuck in a gear the RPM'* would continue to rise without shifting under minimal acceleration. What I found is that the issue would just appear at a certain RPM (somewhere a little bit above 3k). If you do this and can tell a particular point on the RPM scale that it starts at it might be one of those sensors. If it varies from one try to the next (by 700 rpm or more I'd say), then it is most likely something else.

just my $0.02...
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Old 04-29-2004, 03:29 PM   #16
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i had that happen too! It turned out to be a bad Throttle position sensor. IT was throwing a code tho. i remember that, it would go like 40mph in 1st gear. at the same time the egr valve went. I had them both replaced at the same time.

i took it out at lunch today and it seems to be getting a little better yet. hopefully when i run this tank of gas throw it will be all better. I still want those Densos so i can do a tuneup.
TY!! where are U man?
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Old 04-29-2004, 03:54 PM   #17
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We have been having trouble reaching Ty. Try to PM him here, send him email, and if that doesn't work, PM me. I can put you in touch with him through other channels.
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Old 04-29-2004, 03:59 PM   #18
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Don't Forget to get the Throttle position sensor calabrated. That can be what throw the code. You do have to have a computer to hook it up to in order to calabrate it right. Although I'm sure you knew that already! Good Luck!
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Old 04-29-2004, 05:12 PM   #19
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yah, i have the puter but i would have hoped that the TPS is already calibrated being that it was changed out like 5-6 months ago. it wasnt a cheap sensor, i DO remember that!

Bill, i had PM'ed him 2 days ago, as well as you the same day. man i wish i still had his phone number. I prolly do burried in one my many disheveled email accounts...
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Old 04-29-2004, 06:06 PM   #20
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@ 40 we have a lag in downshifting, no matter what,
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