95 Bonneville SSEi hot weather problems - 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 02-13-2006, 07:49 PM   #11
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Default Re: 95 Bonneville SSEi hot weather problems

Quote:
Originally Posted by willwren
Quote:
Originally Posted by Mortehl

Also, about the scanner -- Get the Actron CP9115 with the GM Catridge (CP9111F).

9115 is the part number for the CARTRIDGE. Not the scantool. The scantool is the 9110 with the 9115 cartridge.
Yeah.. Listen to him. I was at the office at the time.
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Old 02-14-2006, 06:22 PM   #12
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Thanks,
I ordered the actron cp9150 kit.
I post a reply when I find anything else out

-James
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Old 02-15-2006, 09:27 AM   #13
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James..from your description, (somehow I missed the post earlier) it sounds to me like a catalytic and O2 sensor.

I had the Cat get plugged on a 95 SSEi I had and it was sluggish the more it warmed up. Cooled down and it was better. O2 had gone bad on the previous owner and took the cat with it.

Does the car seem to use a lot of fuel?
When scanning the car...if the scanner shows the O2 sensor..does it seem to flip hi/low quickly?
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Old 03-07-2006, 12:00 AM   #14
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Got the scanner for my dad.

first time he ran it, came up with a few codes including a P0300 which was not listed in the
shop manuals, any ideas?

Since then he has replaced the MAP sensor and the only 2 other errors left are

P0131
P0171

He went through the troubleshooting in the shop manual and he'* leaning towards his problems being a bad PCM. do you guys think this is correct?

thanks again
-James
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Old 03-07-2006, 01:49 AM   #15
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Quote:
Originally Posted by stanchfi
Got the scanner for my dad.

first time he ran it, came up with a few codes including a P0300 which was not listed in the
shop manuals, any ideas?

Since then he has replaced the MAP sensor and the only 2 other errors left are

P0131
P0171

He went through the troubleshooting in the shop manual and he'* leaning towards his problems being a bad PCM. do you guys think this is correct?

thanks again
-James
P0131- heated oxygen sensor low signal voltage
P0171 - fuel trim lean

Check the Oxygen sensor problem first, see if both codes go away
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Old 01-08-2009, 10:49 AM   #16
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Default <-- same boat

Not to say that your problem is different or that its not the same part... but MY 94 SSEi is having the EXACT same problem... P0131 history code for the 02 sensor and a current P0171 fuel trim lean code

Now I have access to a dealership show as i work there and i checked with the techII scantool and got both codes and a fuel pressure guage showing LOW fuel pressure... like 30psi at idle and 42 max at WOT so i and others thought the pump was steadily dying... changed it with an AC Delco from GM and the problem is the same and so is the fuel pressure...
my thought is stick with the 02 sensor and the cat... i havent tried that yet so im thinking it or the pcm to be the problem
lemme kno if you fix it... [email protected]
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Old 01-09-2009, 08:09 PM   #17
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Ive had the same problems on my 93 ssei,runs great all winter,starts acting up in the spring.Billboost mentioned the hi/lo switching fast....mine did this when a buddy scanned mine....can you explain the signifigance of this?I had already replaced the o2 sensor earlier,didnt solve the prob,but im curious about the cat converter.As far as my mileage goes,it also has dropped big time. Thanks
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Old 01-09-2009, 08:59 PM   #18
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Default ...hehe now slightly illegal

... K still have the codes but fixed the sluggishness and the cutting out... at least for now :P

Now... what i did was have one of my co-workers look at the car (a 11 yr Master Technician) and he replaced *lol* the #5 cylinder sparkplug which had a TINY hairline fracture in it and it was arcing out the ceramic and hiting the block... it was kinda cool looking but was causing the roughness. I also had the CAT removed and a straight pipe installed(I know its illegal, but Oklahoma doesnt have emissions testing anymore and i dont have the funds for a high-flow cat right now... i DO NOT condone this... i did it to be cheap) but since... the car has ran like a champ... for like 2 hrs lol but i need to rescan the car and prolly need to replace the o2 sensor but its running alot better!!!

now this might not be the same problem or the proper solution for your problems.. but since the weekend is comming up... INSPECT the plugs with a fine tooth comb and make sure its not the same problem mine had

...btw the cat in mine was split in the "honeycomb" piece right down the middle so i know it wasnt working the way its suppose to so it prolly helped with the flow by removing it rather than just leaving it be

good luck to all and thanks for all the support

Last edited by tlsheff; 01-09-2009 at 09:04 PM.
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