7.3 harness simplified
Logistics Pro
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
You might have something else wrong. When I bought my 97 out of TN, the gpr was bad and it started just fine down to about 45-50°F. The IDI on the other hand, that is not surprising.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
And of course, the GPs aren't just to start the engine. OTOH, efficiency is probably not one of the OP's priorities....
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
I have my '96 glow plugs on a switch. The truck gets used only for plowing my drive in the winter and it sits in the shop at 50°. I hop in, hit the key and it instantly fires up at 50° with no gp's, and idles perfectly.
It sat outside this winter for a few nights in the -25° range, switch gp's on for about 10 seconds and it cranked a couple rotations before firing up. I was impressed to say the least.
Motor has over 260k miles on it.
Every motor is different, it's up to the OP if he wants to mess with the gp circuit at this point.
....And the gp's ARE just for starting. What else would you need them for?
It sat outside this winter for a few nights in the -25° range, switch gp's on for about 10 seconds and it cranked a couple rotations before firing up. I was impressed to say the least.
Motor has over 260k miles on it.
Every motor is different, it's up to the OP if he wants to mess with the gp circuit at this point.
....And the gp's ARE just for starting. What else would you need them for?
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Per the FSMs, they provide additional heat on startup for more efficient burn. That's why they run for up to two minutes, and why the run time is pre-determined based on temperature (and not directly controlled by temperature). 'Course, that may also have been programmed in anticipation of Big Brother EPA eventually nosing in, and again, most likely not on the OP's radar....
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
Oh, right, emissions, just like the back pressure valve we always delete.....
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
Senior User
Joined: May 2013
Posts: 208
Likes: 0
Yeah, I suspect the extra burn time for the glows is related to extra emissions control. I've got a switch for mine, and the batteries are so happy when I cut them off short.
Regarding the auto-deletion of the EBPV, remember that it's a built-in exhaust brake too. Ford missed the boat by not adding a couple of switches and being the first on the market with an exhaust brake. It's very, very useful towing in the mountains.
Regarding the auto-deletion of the EBPV, remember that it's a built-in exhaust brake too. Ford missed the boat by not adding a couple of switches and being the first on the market with an exhaust brake. It's very, very useful towing in the mountains.
Thread
Thread Starter
Forum
Replies
Last Post
lhud
1999 - 2003 7.3L Power Stroke Diesel
33
May 4, 2023 12:50 PM
gatormccluskey
1994.5 - 1997 7.3L Power Stroke Diesel
5
Dec 24, 2012 06:07 PM
