Replying to Thread:

3126 cat 1998 gmc crank but no start help,help help

Created On Saturday 2, May, 2015 4:21 PM by gaskincrew

Please enter your login information to post.
I want to stay logged in.

Message Title:

Message Text:
bold italic underline
 http link
 https secure link
 ftp ftp link
 mail email link
 LI   Quote  ordered list unordered list

HTML code is not permitted. Special symbols permit some HTML functionality.

Diesel Talk Forum

Diesel Talk Forum
Posts: 1
Joined: May 2015

Note Saturday May 02, 2015 16:21 View thread in raw text format
Diesel Talk
got a problem , drove to my shop shut off and now only will start up on ether and will go back dead, checked high pressure oil pressure ok, check fuel pressure ok, I have checked powers and grounds to computer all is there and ok, I can go to the high pressure pump and check voltage on the 2 wire connector upluged and can key on and then start and I have no voltage at any time, I think it should be 5-9 volts but have nothing, the engine light not coming on in dash so can pull any codes, any diag would be greatly helpful , im losing money every day, thanks ahead of time for any suggestions, I think may be ecm

Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Diesel Talk Forum
Posts: 163
Joined: Sep 2007

Note Saturday June 20, 2015 14:25 View thread in raw text format
Diesel Talk
If you turn on the key and the check engine and stop engine lights come on briefly then you know the ECM is powering up then use a low voltage detector on the injector wires going up in to the valve cover. It should detect voltage when cranking. Another option is to pull the valve cover and use a meter on the injector wires to check for voltage. If you have no voltage when cranking the ECM is not seeing engine speed. Check speed sensors. If you have voltage most likely not getting fuel.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum

Adelman's Truck Parts Corp.
Adelman's Truck Parts Corp.
Young & Sons Inc.
Diesel Sales
Big Bear Engine Company
Advertize on Diesel Engine Trader

Customer Testimonials


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

'Had a Mack 7427 in my shop for 2 years and couldn't sell it! Within a month of advertising on I sold the engine to a guy in Oklahoma - was glad to get rid of it!'

Stan iles, Aqua Fria Aggregates, 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