Hard To Start When Cold
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Joined: Nov 2005
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From: Heber UT
Originally Posted by PSNut
Do u have only one relay? I forgot about the 99's having only one if memory serves me correct.
Nut
Nut
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From: New Hampshire
Originally Posted by Bird Dog
I can only see one. There is only one replaced on the invoice. Manufacture date is 06-98. Could there be 2? if so, where is the other?
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From: Heber UT
Originally Posted by PSNut
My '02 has two mounted together on a pedestal near the fuel filter bowl, one is for GP's and the other is for the intake air heater. The GPR has a large terminal with rubber cover(live battery +12v) and the opposite terminal being switched 12V to the GP's. Should have a heavy guage wire coming off the terminal and splitting to two wires,one for each bank of GP's. The two small wires are for activation of the relay with the PCM providing a ground to the relay. Very simple design with the relay being the most problematic.
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From: New Hampshire
Originally Posted by Bird Dog
My '99 does not have a AIH. I can hear the relay click on and off.
can have them load tested at any auto parts store.
Nut
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From: Heber UT
Originally Posted by PSNut
Yup...sorry i forgot about that fact. Well if we assume all your connections are sound then the only other thing it could be is the batteries. You
can have them load tested at any auto parts store.
Nut
can have them load tested at any auto parts store.
Nut
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From: ABQ, NM
Muy Confused?
Which relay is for the GP's on an 01'. I bridged the one closest to the fire wall (smaller) and nothing. I bridged the one closest to the radiator (bigger) and it fired right up. So I went and bought a GPR and it looks just like the one closest to the fire wall (the smaller one). I AM CONFUSED. Does anyone know for sure which relay is the GP one. The smaller in the back, or the bigger one in the front???????? 2001 model. Thanks,
Ryan
Ryan
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From: New Hampshire
Originally Posted by tumbleweed2
Which relay is for the GP's on an 01'. I bridged the one closest to the fire wall (smaller) and nothing. I bridged the one closest to the radiator (bigger) and it fired right up. So I went and bought a GPR and it looks just like the one closest to the fire wall (the smaller one). I AM CONFUSED. Does anyone know for sure which relay is the GP one. The smaller in the back, or the bigger one in the front???????? 2001 model. Thanks,
Ryan
Ryan
The picture here shows the GP relay with the heavy gauge brown and yellow wires coming off the large terminal(each wire feeds power to each gp bank).The
taller relay is the air intake heater relay.This one is disconnected from the actual heating element on my truck. If your GPR failed at some point i suppose it might be possible to switch over the wires from the GPR to the IAH relay and use it as a GPR. Are u the original owner of the truck?
Last edited by PSNut; Sep 25, 2006 at 04:27 PM.
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From: ABQ, NM
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Joined: Sep 2006
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hard start & a skip
my 99 f 550 starts hard when not pluged in summer or winter ,then you need to bring up the rpms to clean it out ,it has all new injectors ,glow plugs & relays,it dosent smoke much at all ,compared to my 2000 or my 2001 the motor has a skip and is a little weak on power any info would be great thanks
211541 miles
4 inch exuast
211541 miles
4 inch exuast
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Joined: Jun 2005
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From: New Hampshire
Originally Posted by wooly fxr
my 99 f 550 starts hard when not pluged in summer or winter ,then you need to bring up the rpms to clean it out ,it has all new injectors ,glow plugs & relays,it dosent smoke much at all ,compared to my 2000 or my 2001 the motor has a skip and is a little weak on power any info would be great thanks
211541 miles
4 inch exuast
211541 miles
4 inch exuast
The "skip" is usually a CPS going bad. What condition are your batterries in?
Nut
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skipper
batteries are a year old, I own 3 trucks I swaped cps,still skipping along I will buy one tommrow just to try it ,I'll need one some time anyway any good wrenches in NH?
Last edited by wooly fxr; Sep 25, 2006 at 07:35 PM.
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From: New Hampshire
Originally Posted by wooly fxr
batteries are a year old, I own 3 trucks I swaped cps,still skipping along I will buy one tommrow just to try it ,I'll need one some time anyway
replacing your GP's and GPR the batteries are the only thing left. Make sure ALL
your electrical connections are 100% too.