gp prob

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Aug 22, 2011 | 05:49 PM

toddpyles33

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gp prob

ok dumb question but my gp system isnt working proper. all 8 plugs test good. wts comes on but for like 20 secs. glowplugs do not feel warm at all. and hard to start. i figured relay was bad. replaced no luck. so i tested the terminals and everything gets power except gp wire. but oddly ground wire is carrying current. which pretty sure it shouldnt right? thinking gp controller crossed somewhere. any way to rig aound without having to replace atleast for temp purposes

Aug 22, 2011 | 07:00 PM

tecgod13

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From: Western Mass

Did you read the two stickies at the top of this forum? One is for the early glow system, the other for the later glow system.
Read whichever one applies to your truck, then report back.

Aug 22, 2011 | 07:27 PM

'94IDITurbo7.3

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That is exactly how mine works and it works just fine.

How did you test your plugs?

Aug 22, 2011 | 07:57 PM

toddpyles33

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i have read through it. is the ground wire supposed to powered when glow plugs should be heating. they do not get hot that wire shows no juice. i am just using a lil volt tester. thats how i checked gps. they all lite up. wts light stays on extremly long tho. and gpsdont get warm at all. and hard to start. on top of that somethings making my gauges work all funky. pegging out or not at all.

Aug 22, 2011 | 08:41 PM

'94IDITurbo7.3

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Quote:

Originally Posted by toddpyles33

on top of that somethings making my gauges work all funky. pegging out or not at all.

What do you mean exactly? do they all cycle like the gauges do in new vihicles?

Aug 22, 2011 | 11:02 PM

toddpyles33

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gp prob fixed bad controller. by passed it for temporary. how much is a new controller and any brand better?
and the charge gauge works and temp now. but no tach, oil pres pegged out high, fuel pegged out over full running. key on NR the fuel gauge pegged oil resets to zero, tach bumps like its ready to go. key off the oil press always returns to middle of indicator. tried to diff dashes. same thing. fuses all good. even fuse links. dont knw if adding a ground somewhere close would help

Nov 11, 2011 | 05:46 PM

toddpyles33

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All problems now fixed. Dash was a gasoline dash not diesel. found one at junkyard 15 bucks all gauges work except fuel gauge. Also found the gp controller. They didnt know what it was so it was only 5 BUCKS! cheapest fix ill ever have lol. gps work truck starts and runs great.