DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View GM Diesel Engines

CATEGORY LISTINGS > GM DIESEL > 6.5 diesel throwing inconsistent trouble codes [ REFRESH ]
Thread Title:

6.5 diesel throwing inconsistent trouble codes


Created On Saturday December 11, 2004 11:10 Diesel Talk
Diesel Talk Forum

DieselDawg
Diesel Talk Forum
Posts: 4
Joined: Nov 2004

Note Saturday December 11, 2004 11:10 View thread in raw text format
Diesel Talk
I have a '94 K3500 with the 6.5 Turbo diesel that was throwing trouble codes constantly. I finally purchased a new PMD and a #9 resistor and mounted the PMD remotely (on the firewall with standoffs to keep air flowing behind it. This eliminated all but one code. It was throwing #35, 36, 39 and 85 (go figure). Prior to replacing the PMD, I had to have the truck towed home twice and once to a mechanic when it stalled and wouldn't start. Now, it's still throwing #35, but doesn't quit or stall and runs great! Another strange thing that happens when I read the codes (via the jumper and dash light monitoring) is that I don't get the #12 (diagnostic working) code before the trouble code. Anyone have any thoughts or experience on this problem?mad
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

AHMRFIXIT
Diesel Talk Forum
Posts: 9
Joined: Jan 2005

Note Wednesday January 05, 2005 23:04 View thread in raw text format
Diesel Talk
Sounds like a hard fault in the pcm(the main engine computer). GM has had programming errors for certain eproms and snap-on has a listing of them. They use a gas engine computer to power a diesel, go figure. The dash light has never been a good way to get codes, but try erasing it by removing the neg battery cable. Then hook it back up turn the key on and without starting the engine, see if the code is still there. If it is it is probably a hard fault and is probably pcm related, but computer diagnosis is hard by forum.

-------------------------
JUST TRYING TO MAKE A LIVING!
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
CATEGORY LISTINGS > GM DIESEL [ REFRESH ]
IESC CORP.
Young & Sons Inc.
Diesel Sales
Luoyang Diron Parts Trading Co.,Ltd
Advertize on Diesel Engine Trader

Customer Testimonials

Newsletter

Subscribe to our mailing list to get all the latest DET news.as well as daily or weekly notifications of new engines and spare parts listings.

'We listed a Perkins diesel on DieselEngineTrader.com, had numerous inquiries from US and Europe and sold it within a week. Very pleased with your website.'

Ken Ginter, Arizona, USA

'Greetings from Holland! I sold my Bedford 330 engine to a guy in Latvia, thank you for the good working of your website.'

Bas Mulder, Mulder Transport, Holland

'I listed a surplus Watermota diesel on DieselEngineTrader. It took a few months to sell, but I was delighted as the engine was quite obscure and I never thought anyone would buy it!'

John MacTaggart Dalintober Boats UK