Hard Start when downhill
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Freshman User
Joined: Jan 2008
Posts: 33
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From: Dartmouh, Nova Scotia
thats what i figured, but theres another thread on the go that mentioned something about the icp sensor, so i dunno, made me think.. guess I'll have to start with the simple things first, I'll pickup a gasket set for the hpop res. hopefully its that simple... i just bought this truck, i don't need to be sinking more money in it.
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Freshman User
Joined: Jan 2008
Posts: 33
Likes: 0
From: Dartmouh, Nova Scotia
well, i truly appreciate everybodys help, I'm a heavy truck mechanic, just a little shy on small diesel engine knowledge. Worked on a number of 7.3l engines, just easier to spend someone elses money too i guess. Plus I always fear the worst when it comes to my own vehicle. Oh... I also live in Dartmouth, Nova Scotia, Canada. Not sure where the sponsors are located but I dunno if it'd be worth my while to get it shipped.
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Freshman User
Joined: Jan 2008
Posts: 33
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From: Dartmouh, Nova Scotia
Truck has been worse lately to start. Doesn't matter if it's up or downhill. It's not the HPOP reservoir, I check that.
I unplugged the ICP sensor and truck started right away. Do you think it could be the sensor or something else? I ordered a sensor today, but I don't want to put a new sensor on if you guys don't think that the problem.
I unplugged the ICP sensor and truck started right away. Do you think it could be the sensor or something else? I ordered a sensor today, but I don't want to put a new sensor on if you guys don't think that the problem.
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Post Fiend
Joined: Mar 2007
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From: Texas
Unplugging the ICP sensor makes the PCM assume a default level. If you can start the truck with the sensor unplugged, but when you plug it back in you have trouble starting again, I think you've found your problem.
Thanks for keeping us up to date on this.
Thanks for keeping us up to date on this.
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Freshman User
Joined: Jan 2008
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From: Dartmouh, Nova Scotia
so this is what happened this morning... went out, cranked truck over for what seemed like forever.. no go.. checked the oil in the hpop res. was full... cranked again.. no go.. unplugged icp sens and away we go.. i suppose this could be a coincidence.. tomorrow i'm gonna check the hpop res. before i attempt to start, then try and start, then unplug the icp.. we'll see....
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
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From: Charlotte-Fairbanks-Bflo
I did the same thing with my EBP sensor. But after a couple of days of getting used to paying for it I went ahead and put it on anyway. Turned out I probably didn't need it, but.......Oh well.........
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Joined: May 2001
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From: Cabot, Arkansas
so this is what happened this morning... went out, cranked truck over for what seemed like forever.. no go.. checked the oil in the hpop res. was full... cranked again.. no go.. unplugged icp sens and away we go.. i suppose this could be a coincidence.. tomorrow i'm gonna check the hpop res. before i attempt to start, then try and start, then unplug the icp.. we'll see....
Posting Guru
Joined: Oct 2007
Posts: 2,225
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From: Farmington, Minnesota
I have a simular start problem, it is intermittent though.
Once it starts it runs fine. After the white smoke clears.
It has happened with warm temps in the 40's, always on first start of the day. I don't think it's GP's because I can just hop in and crank it like a gasser and she will start. Also my LED lights up.
It has only happened when I have WTS.
Once it starts it runs fine. After the white smoke clears.
It has happened with warm temps in the 40's, always on first start of the day. I don't think it's GP's because I can just hop in and crank it like a gasser and she will start. Also my LED lights up.
It has only happened when I have WTS.