new gpr

[89 Stroker]

i had recently had to run a starter solenoid as a gpr , just put in a new motorcraft one and when i turn the key on the battery gauge is low and it cranks slow , new starter is on so i know its not that , im assuming my batteries are low because the glow plugs are now getting the correct amps with the correct gpr , is this right? , the truck fires up and runs great with the help of some wd 40

 

[89 Stroker]

just drove it and got it up to operating temps , shut it off then try to restart it and it wont fire , it wants to but wont , also with this new gpr iv noticed it turns over slower then it did with the starter solenoid on , any thoughts

 

[Bobby@cp]

Did you wire it up correctly? Ive never run into this issue, Im thinking you have something drawing some juice

 

[89 Stroker]

Did you wire it up correctly? Ive never run into this issue, Im thinking you have something drawing some juice

i still need to switch the wires around , it does not have the i and s like the other one did on the little terminals , iv tried 2 other gpr's from the auto store but took them back , as said with the starter solenoid on it it turns quicker but still wont fire , after i drove it it didnt even sit for 5 seconds before i tried firing it again and it just cranked and cranked

 

[Bugman]

You can't hook a GPR up incorrectly. That is as long as you place the small wires on the small lugs and the large wires on the large lugs.

Big question is did you test the relay to see what the voltage drop was across the large terminals when it was energized and how are your batteries?

 

[89 Stroker]

You can't hook a GPR up incorrectly. That is as long as you place the small wires on the small lugs and the large wires on the large lugs.

Big question is did you test the relay to see what the voltage drop was across the large terminals when it was energized and how are your batteries?

supposedly my batteries are good , i just put a new motorcraft gpr in today and its like the power gets cut in half , the battery gauge is not even at half and it slow cranks , has a brand new starter on it along with the alternator , this morning with the starter solenoid on it cranks over fast but does not fire

 

[Bugman]

When the glow plugs light up you are drawing around 190 amps from the batteries and the voltage will drop. I haven't actually measured it but it will be below 11 volts since it takes a little over 10 volts for the engine to start. So if your batteries are not up to snuff that would explain the slow cranking.

When you had the starter relay on it may of not been energizing since most of them are case grounded and you may of had the key on power connected to the wrong terminal. But that is just a guess. Charge up your batteries on a charger and take them down to a shop and have them tested to make sure that they are good.

 

[gnxtc2]

If all your GPs aren't working, it'll throw off the cranking time. Check the UVCH (internally and externally) for any burnt pins.

Also, if it turns over slow, where did you get the starter from? I only use Motorcraft starters. And I swapped over to a SD starter.

Billy T.
[email protected]

 

[89 Stroker]

i got a starter a few weeks ago from orielly , i doubt its bad by now , i just put two new batteries from costco in , put the motorcraft gpr in and when i turn the key the battery gauge shoots up followed by a loud click then shoots way down and cranks slow

 

[Bugman]

Disconnect the relay and see what the battery guage does and how it cranks.

 

[89 Stroker]

the battery gauge goes about halfway a little higher then before , still cranks over the same

 

[Bugman]

I would suspect either batteries, cables, or the starter again.

 

[gnxtc2]

What makes you think that the starter didn't go bad? Those box auto parts store buy the cheapest reman parts. Do you really think all the parts in the starter were replaced?

Yea check your cables and batteries. Did you buy the appropriate size batteries?

Billy T.
[email protected]

Sent from my DROID BIONIC using Tapatalk

 

[89 Stroker]

bought 850 cca batteries , just got a new starter , still cranks slow , when i hook up the gpr thats when it cranks over even slower , both batteries read 12 volts

 

[89 Stroker]

seems like its maybe pulling from 1 battery , fired up a bit ago even when cranking slow , the hpop is full of oil , i know it has nothing to do with injectors , since my truck is a messed up conversion i have seen fuse #22 get thrown around about this , anybody have a diagram or something for it?

 

[89 Stroker]

im thinking i either have a short or this relay is no good , i hook the relay up and get no power at all , just clicks when u try and start it , i unplug the relay and get enough to turn the truck over ,