Cold start issue #50432918394
Thread Starter
|
Senior User
Joined: Dec 2012
Posts: 198
Likes: 0
Cold start issue #50432918394
Trying to figure out the cold starting issue on the 96. I know its glow plug or relay related just trying to figure out which one. Last night I turned on the key and checked the voltage coming out of the relay and it read right at 11.1 volts so I figured the relay was good. Today when I went out the start the truck (about 40 degrees and raining) the truck didn’t want to fire. So I took a screew driver and laid it accros the two relay post for about 10 seconds and she fired right up. I am thinking it might be the relay but advance wants $80 bucks for one and I want to make sure before dumping money into the old girl.
Lead Driver
Joined: Mar 2006
Posts: 5,104
Likes: 1,517
From: western SD
Starting after jumping the two large terminals on the GPR is a pretty good indication that the relay is shot. I'm thinking the last one I got from NAPA was about half of what you posted from Advance. The NAPA # is GPR110 although a GPR109 for an 83-93 IDI will work.
Lead Driver
Joined: Mar 2006
Posts: 5,104
Likes: 1,517
From: western SD
I don't know the difference, Dave Sponogle used to be a mod on the IDI forum, posted that it would work when he got his 97 Stroke. When I asked him, he said the only difference he could see was the price.
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Stancor 586-902 relay is the way to go, for a reliable tough GPR. $50-ish to your door.
More important than just checking the voltage on the GPR is to measure the voltage DROP -- turn the key to RUN and check the voltage at the "always on" big terminal of the GPR, and then ALSO check it at the 'downstream" big terminal (the one that goes to the plugs). If the _difference_ is more than 0.3V, relay is done.
More important than just checking the voltage on the GPR is to measure the voltage DROP -- turn the key to RUN and check the voltage at the "always on" big terminal of the GPR, and then ALSO check it at the 'downstream" big terminal (the one that goes to the plugs). If the _difference_ is more than 0.3V, relay is done.
Cargo Master
Joined: Nov 2010
Posts: 2,797
Likes: 10
Stancor 586-902 relay is the way to go, for a reliable tough GPR. $50-ish to your door.
More important than just checking the voltage on the GPR is to measure the voltage DROP -- turn the key to RUN and check the voltage at the "always on" big terminal of the GPR, and then ALSO check it at the 'downstream" big terminal (the one that goes to the plugs). If the _difference_ is more than 0.3V, relay is done.
More important than just checking the voltage on the GPR is to measure the voltage DROP -- turn the key to RUN and check the voltage at the "always on" big terminal of the GPR, and then ALSO check it at the 'downstream" big terminal (the one that goes to the plugs). If the _difference_ is more than 0.3V, relay is done.
We have these on all our fleet trucks now...Wish you were closer I have 6 GPR sitting in the garage that are in fine shape...but were replaced with the StanCores you could just take one.
Simply an amperage rating..the 109 is fine for warmer climates... I ran one in my truck for for a winter in Colorado and didn't have any problems...
Trending Topics
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
That means it's still connecting, but not providing enough voltage to the plugs. Time for a new relay. You could, for the time being, simply run the plugs longer before each startup, say an extra 10-15 seconds; and/or plug it in. That'll buy you some time.
Could ship one for prob. $5-ish. But then again, if he has to wait for one, he may as well wait for a Stancor....
Could ship one for prob. $5-ish. But then again, if he has to wait for one, he may as well wait for a Stancor....
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Laughing Gas
Joined: May 2004
Posts: 1,062
Likes: 6
From: Dallas, TX, USA
The largest external difference is that the terminals are 'clocked' a bit differently. Fortunately, the wires will easily stretch and it works fine electrically.
Thread Starter
|
Senior User
Joined: Dec 2012
Posts: 198
Likes: 0
Guess i need to start checking the glow plugs. I have a good multimeter but dont know what pins or the ohm's she should be at. I will search latter when i have time but if some one has a quick reply or knows a good thread that would be great. Just have a lot going on today.
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
On the 4 valve cover connections, the gp's are the outside 2 on each plug. The middle one is a common ground, the 2 closest to the middle are injectors. Gp's should ohm out at about 1 ohm each, give or take a little. If you want to check the injectors while you're doing it for chits and giggles, they should be real close to 3.2 ohms each.
Laughing Gas
Joined: May 2004
Posts: 1,062
Likes: 6
From: Dallas, TX, USA
Did you wait the full 2.5 minutes until the glow plugs clicked off before trying to start it?
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
That's a major waste of time. The glow plugs do NOT run for that long in order to start the truck. Even with weak glow plugs or a stone cold engine not plugged in, you shouldn't need more than about 30-40 seconds of glow plug run time in order to start the truck.