Hard starting still, replaced my GP relay - Ford Powerstroke Diesel Forum
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Old 02-24-2013, 09:13 PM
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Hard starting still, replaced my GP relay

Troubleshot a GP relay problem last week. Replaced it (the old one fell apart at the incoming battery connection post) and it is now functional and I have not received any further GP fault indications. But I have to crank it for several seconds and then stop and retry to finally get my Excursion to start. I feel I must have bad glow plugs. It is better than before replacing the relay, but not right.

How hard are they to replace?
How difficult is it to determine which may be bad? I am thinking resistance checks, but I noticed that 2 are connected together at the GPR for the total of 4 sets.


Thanks in advance for any help,
Mike
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Old 02-25-2013, 05:23 AM
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check the fluid level in your hpop. There's an allen plg on top. Should be 1/2 - 3/4 in from the top.
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Old 02-25-2013, 06:03 AM
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Thanks Timmy. I actually performed a "tune up" recently. From some video source I found on YouTube. I pulled the plug and the fluid level was good. I extracted what I could out, filled it with good new oil and ran the truck for a minute or two. Repeated twice with the last time using Prolong to improve the quality of oil that the HPOP receives. It sort of makes sense to ensure a good oil quality to the HPOP.

But the oil that I pulled out did not seem too bad (the first time extraction that is). I am pretty sure it would not hurt anything by doing this maintenance action. After I filled it with clean oil and ran it a few minutes, the oil was blackened somewhat. That tells me that the oil is circulating up to the HPOP and draining back into the engine as designed.

I hope I am looking at it correctly. After the third oil extraction and adding the prolong, I performed a oil change on the motor to freshen up everything before starting back up.


Thanks,
Mike
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Old 02-25-2013, 07:04 AM
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Just so you know...

That Video you saw was made by a Complete RETARD (Bill Hewitt) and there's nothing accurate in it. He's a Laughing Stock in the PS community for the nonsense he puts out there with this stuff. That oil is Not stagnate, as he proposes, and what you're doing is simply a waste of your time and money

Start diagnosing with this -> Troubleshooting GPR & GP's
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Old 02-25-2013, 07:08 AM
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I can believe what you say, as when I did this, I observed that the oil had darkened quickly, which meant that it was traveling through pretty good in the system.

Although the first time and realizing that I no longer need to do this, didn't hurt anything. Unless the Progaurd id bad for our motor. I can't imagine that it would be.

Thanks for the heads up on this guy.

I am pretty new to the PS world and will ask a lot of questions...



Thanks,
Mike
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Old 02-25-2013, 07:10 AM
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i got a quick question regarding your glow plug relay , excursions had a glow plug module for the most part and only had the intake air heater mounted in front of that , does this vehicle have a module or an actual relay , may be the issue here
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Old 02-25-2013, 07:13 AM
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This must be right before the switch to the module. I have the relay on top of the motor, passenger side of middle towards the front of the engine. Autozone and Rock Auto show me having a module, and I had to go to 1999 model F250SD to get the relay.

I would not have both would I?

There is another relay just in front of the GPR, that I do not know what it is. Maybe for the starter?


Thanks for the heads up !



Mike
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Old 02-25-2013, 07:17 AM
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Quote:
Originally Posted by beamer View Post
This must be right before the switch to the module. I have the relay on top of the motor, passenger side of middle towards the front of the engine. Autozone and Rock Auto show me having a module, and I had to go to 1999 model F250SD to get the relay.

I would not have both would I?

There is another relay just in front of the GPR, that I do not know what it is. Maybe for the starter?


Thanks for the heads up !



Mike
the one in front of the glow plug relay is the intake air heater and should be slightly taller than a glow plug relay , its very unusual to see an excursion with a relay and not the module
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Old 02-25-2013, 09:13 AM
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Quote:
Originally Posted by SCUFFY828 View Post
the one in front of the glow plug relay is the intake air heater and should be slightly taller than a glow plug relay , its very unusual to see an excursion with a relay and not the module
Is it possible that I have a special Excursion? What would the relay that was bad before be? It really seemed like it is. It was faulty as when I turned the ignition on, there was no power out, and it had the small front wire with power. When I went to replace it, the stud on the left (incoming power) broke off with very little pressure to remove the nut.

Now when I turn the ignition key on, there is power to the right side (output).

Note the strap to help spread the load across to multiple end users. Each of the bottom lugs have 2 wires. 2 lugs on both spreaders = 8 wires out and the top wire must be for monitoring by the ECU. I have not received any GP voltage errors since replacing the GPR and I was getting them frequently.

The relay in front is taller due to being mounted higher. What exactly does that do for the intake air? What does it actually power? I installed a AFE stage II CAI and dont remember any device for heating the intake air.


Thanks for your help,
Mike
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