trouble starting, Glow plug circuit?

[huse]

Hi, it's -2F outside and my truck is acting up.

My problem: it seems like the glow plugs doesn't always come on. I can see when the glow plugs are drawing current from the batteries and when it's not. when it's not drawing any current i can't start. but starts like a champ when the glow plugs come on.

The WTS light comes on and stay on for as long as it takes to start. The light works as it normally should. But glow plugs still dont draw any current. only occasionally.

At first it worked the second time i turned the ignition on.

But now it got a mind of its own. it can glow right away or it might take 15-30 min for they to come on.

I have recently put on two new deka 665mf batteries and i have also put on some new really beefy battery cables from custombatterycables.com


Anybody got any ideas?




Sorry for any typeO's and grammar. Im norwegian.

Thanx

 

[nyteshades]

I'd start by checking all the wiring connections on the glow plug solenoid behind the air cleaner.

 

[alienturtle]

we just had a post on here about the glow plug relays..let me find it for you..it might sound like the relay for the glow plugs is bad. one second

edit..here you go..read this thread.it might help you. when you get to page 2 about half way down in Agmen's post it will explain what might be happening to you.

http://www.oilburners.net/forums/showthread.php?t=44541&page=2

 

[huse]

Nice, then im going to test the relay tomorrow hope i find the cause. Seems like he had the same problem as i do.

Thanx for fast reply

 

[huse]

Just to sum up this thread. It ended up beeing a bad relay, Put in a new motorcraft unit (relay and controller) works like a champ now!