DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Caterpillar Engines

CATEGORY LISTINGS > CATERPILLAR > 3126 cat 1998 gmc crank but no start help,help help [ REFRESH ]
Thread Title:

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


Created On Saturday May 02, 2015 16:21 Diesel Talk
Diesel Talk Forum

gaskincrew
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

-------------------------
chris
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

TDcrash63
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
CATEGORY LISTINGS > CATERPILLAR [ REFRESH ]
Adelman's Truck Parts Corp.
Adelman's Truck Parts Corp.
Young & Sons Inc.
Big Bear Engine Company
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, gensets and spare parts listings.

'Just want to say, I enjoy this site & appreciate the folks who put it together. Keep it going!'

Troy Kuntz, Texas, USA

'We're thrilled with DieselEngineTrader.com! We sold an old CAT D343 within 1 month of listing and a Cummins engine within 3 months. We were amazed - we didn't think anyone would want them in the condition they were in!'

Stephanie Vaughan, Heavy Equipment Parts, Independence, USA

'I did receive quite a few calls from the add - thanks for the service.'

Bill Aldridge, Environmental Rainwater Solutions, Wilmington, USA