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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-15-2005, 04:29 PM   #1
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Default Code 65

What exactly is a code 65? My Haynes manual jumps right from 64 to 66, but my 90 bonneville is displaying 12,65, and 12 again. The car seem to run the same as it has been, but the check engine light came on yesterday. I sued the forum'* search function and turned up nothing. thanks.
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Old 03-15-2005, 04:30 PM   #2
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sorry, I found the info in the tech section of this site. Umm.. tech section says 65 is the same as 63. tech section also lists 63 as an EGR problem. My Haynes manual lists 63 as a MAP sensor problem. which is it for real?
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Old 03-15-2005, 07:13 PM   #3
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Yes those codes are correct.... The 88-95 NA'd 3800'd never used a MAP sensor... You are indeed having EGR issues.... Might be as simple as a sticking solenoid...

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Old 03-15-2005, 09:28 PM   #4
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Ok, thanks. The way the car acted/acts is a little weird, and i forgot to mention it in the original post. When the check engine light came on, the car didn't stall. it didn't even seem to run different. After turning it off, the beast won't restart. initially it turns over like it is going to run, but then jsut starts cranking with no fire. Is this consistent with how I should expect a car with failed EGR valve to act? BTW.. can anyone give me a hint on where this EGR valve and its solenoid is located at? Once again my repair manual and my own gumption are coming up short.
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Old 03-15-2005, 10:22 PM   #5
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You're having the same problem as me. I got an EGR code after it warmed up and it wouldn't restart easy after i shut it off. I changed the solenoid, and no more problems. Fixed it instantly. Give that a try.
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Old 03-16-2005, 08:58 PM   #6
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Well... I'd like to replace the solenoid, but I can't. I've got the "digital" EGR valve. that means 200 bucks for a new one or 40 bucks for a used working one off of ebay. Since I'm broke Its gonna have to be the ebay. damnit, I was supposed to pick up a friend at the airport on friday. Why exactly won't the car start anyway? An EGR valve doesn't sound THAT f'n important. recirculating exhaust gases when the car is warmed up shouldn't effect whether or not the car starts.
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Old 03-17-2005, 12:37 AM   #7
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The car refuses to start?

Does the car have spark? Stumble, sputter? Anything? Or does it just turn over and over and over witout so much as a sign of life?

If the EGR is stuck open it can cause all sorts of issues, but you should be able to get the car to run somewhat..

Let us know..

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Old 03-17-2005, 04:38 AM   #8
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On first cranking the engine, it fires and climbs to above 1000 RPM, then dies. THe engine runs for less than a second. Cranking it any more has no effect. If I turn the key back to the off position, then try to start it, again the same problem, same deal.
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Old 03-17-2005, 11:55 AM   #9
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Quote:
Originally Posted by theprodigalstranger
On first cranking the engine, it fires and climbs to above 1000 RPM, then dies. THe engine runs for less than a second. Cranking it any more has no effect. If I turn the key back to the off position, then try to start it, again the same problem, same deal.
Ok thats screwed up...

Well that tells me that the ICM is functioning, as the car is getting an initial fuel pulse and spark... But the question now becomes, is the computer taking over after 400 rpms?

Do you by chance know anyone with an 88-91 with a 3800 Vin C V6 that you could borrow a computer from? For testing purposes?

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Old 03-17-2005, 12:02 PM   #10
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What happens if u try to keep it running by giving it a little gas? That'* how i had to get mine going. Otherwise it would do just what u have: start, idle high, then stumble and quit. At least mine always started right back up. Sorry to hear that u have that digital crap, that'* probably why u got a 63 code and i got a 32 or somethin code.
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