Gp help what could be the issue - Diesel Forum - TheDieselStop.com
7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 18 (permalink) Old 03-07-2016, 02:26 PM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
Gp help what could be the issue

Ok im beging to hate this damn truck.This truck wasnt used everyday by prior owner. But damn.Glow plugs have been cycling fine plus has new glow plugs and wire harness.Well yesterday drove truck and went great no problems.So come home park truck for about 4 hours.Daughter calls me and says she hit deer with her car.Go out to start truck no start.No clicking or anything from gp.So it got late and gave up on truck for the night.Son goes out this afternoon and no click and no start.Wts light stays on then goes off in about 10 or so aeconds.Truck is turning over fast but he hooks battery charger up just for insursance.He turns charger up to 200 amp start and the gp start clicking and truck started.Shut truck off with no charger and Gp are working fine now.Wth.
Maine7.3owner is offline  
Sponsored Links
Advertisement
 
post #2 of 18 (permalink) Old 03-07-2016, 03:01 PM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
OK, you live in Maine so I am guessing outside temps are +32* or lower.
No mention of whether block heater was plugged in prior to starting.

Only time truck would start is with battery jumper attached.

My guess is going to be a battery issue.

How old are the batteries?

Charge batteries 12-24 hours and bring to a parts store for a load test to check condition.
If bad then buy new ones...best to replace as a pair.
If good then keep.

Either way, clean the posts with a battery tool, most of them are of a wire brush design that allows you to brighten up the posts and the terminals. Hook up the cables and make sure they are snug, but don't wrench the heck out of them because posts can actually break off internally. Then follow the cables to their connection points (at grounds and starter) and make sure the contacts are "bright" and tight.

If the problem continues then test your Glow Plug Relay and each of your GPs. The GPRs on these trucks get fried all the time...doesn't matter if they are only a week old.

Be thankful your daughter is alright.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.

Last edited by ArcticDriver; 03-07-2016 at 03:07 PM.
ArcticDriver is offline  
post #3 of 18 (permalink) Old 03-07-2016, 03:12 PM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
It was not plugged in for them 4 hours.I load tested both batterys with my tester and they where fine.I did check terminals and they are clean.
Maine7.3owner is offline  
Sponsored Links
Advertisement
 
post #4 of 18 (permalink) Old 03-07-2016, 03:15 PM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
No truck wouldnt start with charger on it either.He put 200 amp start and they started clicking and starts.He just went back out with no charger hooked up.And everything works fine.Had this issue a week ago also.
Maine7.3owner is offline  
post #5 of 18 (permalink) Old 03-07-2016, 03:33 PM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Maine7.3owner View Post
It was not plugged in for them 4 hours.I load tested both batterys with my tester and they where fine.I did check terminals and they are clean.
Do you actually have a load tester or a voltmeter?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
ArcticDriver is offline  
post #6 of 18 (permalink) Old 03-07-2016, 03:39 PM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Maine7.3owner View Post
No truck wouldnt start with charger on it either.He put 200 amp start and they started clicking and starts.He just went back out with no charger hooked up.And everything works fine.Had this issue a week ago also.
Are the outside temperatures the same today as when the issue happened a week ago?

Possibly a loose cable to/from the battery but I would test your GPR (without the 200A hooked up) using this instruction by KLHanson:

http://www.thedieselstop.com/forums/...e-first-75094/


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
ArcticDriver is offline  
post #7 of 18 (permalink) Old 03-07-2016, 04:19 PM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
Yes i have a tester with a load test.And the temps last week where colder.I changed the fuel filter last week.And that is when i had the first issue with them.But they started working again.
Maine7.3owner is offline  
post #8 of 18 (permalink) Old 03-07-2016, 07:25 PM
Senior Member
 
Bill1013's Avatar
 
Join Date: Mar 2007
Location: Northwest Ohio
Posts: 3,553
My Photos: (0)
Feedback Score: 0 reviews
Take your jumper cable POS+ side and hook it from battery to GP relay (battery side), the turn key ON and try to start after the GP cycle. If it starts, then something is wrong in the power supply wiring to the GP relay.
Maine7.3owner likes this.

99.5 F350 XLT Lariat 4X4 4R100 4.10 DW CC LB Centurion conversion, 183K miles Garret Turbo, Radio SD &Tape, SP Performance 40-60-80 chip, 100 Gal.Transfer Flow W/Trimax Control Aux. fuel tank. ScanGaugeII, Boost, EGT, Trans. Temp. Oil Temp. Build date 03/99

92 F350 2WD 7.3 IDIT E4OD CC LB dually Banks turbo US Gear O/U, 79K on the engine. 129K body.

Have AutoEnginuity W/Ford enhanced. Lima OH area.

My mind works lightening fast. One Flash and it's gone forever.
Bill1013 is offline  
post #9 of 18 (permalink) Old 03-07-2016, 07:50 PM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Maine7.3owner View Post
Yes i have a tester with a load test.And the temps last week where colder.I changed the fuel filter last week.And that is when i had the first issue with them.But they started working again.
The issue started right after you changed your fuel filter.

And you have had it running since the filter change, right?

I am just trying to think how that filter change could possibly play into this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
ArcticDriver is offline  
post #10 of 18 (permalink) Old 03-07-2016, 08:00 PM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
Yeah we have been running it and driving it.But have to remember this GP problem has come and gone twice now.I don't think the filter change has anything to do with it.When i had the filter problem truck wouldn't start had some water in filter.But at same time the gp wouldn't cycle.Thought it was because of the water in it.Changed filter and the GP cycled again fine.Coincidence maybe not sure.So pretty much same thing this time.Thought filter was screwed again when it wouldn't start.Changed filter again but this time it didn't cycle GP untill son put 200 amp start and it started cycling now and it will cycle and start fine now without the charger.

1990 f350 7.3 idi Dually 2 wheel drive.Non turbo 131,000 miles.
Maine7.3owner is offline  
post #11 of 18 (permalink) Old 03-07-2016, 08:03 PM
Senior Member
 
Join Date: Jul 2012
Location: Canada, Sk, Yorkton
Posts: 694
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by ArcticDriver View Post
The issue started right after you changed your fuel filter.

And you have had it running since the filter change, right?

I am just trying to think how that filter change could possibly play into this.
Fuel heater in the filter head my been damaged when replacing filter?!? Mine had chunks off it on mine so I replaced it.

May be some thing OP could check, not sure if it is driven from the relay or all ways on as it does have its own Tstat.

New truck: 1988 F-350 1 ton dualy 2*4, 7.3L IDI Naturally Aspirated, Dual tanks with Camper package.
Mods: Enhanced gauge cluster; Transmission temp, rear diff temp, coolant system pressure, Vacuum pressure, Fuel pressure, Crappy tire Air horn Kit, Raycor pre filter/water sep. All LED Dash lighting, Parker LFS tranny filter, super duty tranny cooler, gerret turbo, waste gated (pending).
Xeonpony is offline  
post #12 of 18 (permalink) Old 03-07-2016, 09:09 PM
Senior Member
 
Join Date: Nov 2008
Location: Madison, WI
Posts: 2,373
My Photos: (0)
Feedback Score: 1 reviews
Did you isolate the batteries (disconnect at least one negative cable) when load testing them?
madpogue is offline  
post #13 of 18 (permalink) Old 03-08-2016, 01:42 AM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Maine7.3owner View Post
Yeah we have been running it and driving it.But have to remember this GP problem has come and gone twice now.I don't think the filter change has anything to do with it.When i had the filter problem truck wouldn't start had some water in filter.But at same time the gp wouldn't cycle.Thought it was because of the water in it.Changed filter and the GP cycled again fine.Coincidence maybe not sure.So pretty much same thing this time.Thought filter was screwed again when it wouldn't start.Changed filter again but this time it didn't cycle GP untill son put 200 amp start and it started cycling now and it will cycle and start fine now without the charger.
In an earlier post you said you "Changed the fuel filter last week and that is when you had the first issue with them (GP)."

When you perform maintenance and immediately something else quits working then its a good place to start looking--possibly a wire was knocked loose at the GPR, etc...

if the GPs cycle sometimes and not others then it could be the result of ambient temperature changes (not uncommon over a weeks time in the Spring) or it could be the result of loose wiring or faulty connection. The fact the GP cycle every time you use the 200-amp starter suggests a battery issue but you are confident your batteries are good. Since you have also checked all grounds and connections then it would be a good time to check the GPR using the procedure outlined in the link provided in previous post.

Is there a reason you are not plugging in the block heater ?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
ArcticDriver is offline  
post #14 of 18 (permalink) Old 03-08-2016, 05:18 AM Thread Starter
Senior Member
 
Join Date: Feb 2012
Location: Maine
Posts: 102
My Photos: (0)
Feedback Score: 0 reviews
I have been using the block heater most of the time.And yes i unhooked batteries to test them.
Maine7.3owner is offline  
post #15 of 18 (permalink) Old 03-08-2016, 06:28 AM
Lifetime Supporting Member
 
ArcticDriver's Avatar
 
Join Date: Apr 2015
Location: Longmont, CO
Posts: 3,492
My Photos: (0)
Feedback Score: 0 reviews
If you are using the block heater then the entire equation is different since a block heater will most often compensate for a failed GPR in temps of +20* or more (did you actually provide ambient temp? I missed it.) Its still worth testing the GPR and GPs using the link provided earlier just to rule them out. The GPR test must be performed with a cold engine--no block heater the night before. It would help to provide actual numbers like temperatures and battery voltages and voltages of GPR test and Ohms of GPs.

But with block heater plugged in and batteries fully charged and load tested and all connections and grounds bright and tight as you describe, and if the GPR test confirms its working...then lets go back to fuel.

When you try and start the truck "cold" without the 200A booster and it doesn't start do you see alot of white smoke out the exhaust?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.

Last edited by ArcticDriver; 03-08-2016 at 06:55 AM.
ArcticDriver is offline  
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > Ford Diesels > 7.3L IDI Diesels (Not Power Strokes)

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome