help!!!!!!! wont start
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help!!!!!!! wont start
Hi guys,
This morning and a past few others my truck will not start. It will just crank and crank and maybe want to start and then just quickly dies again. there is alot of white smoke coming out the exhuast and the engine bay after it crank a few times. after about ten min of trying to crank it the truck sometimes starts but very hard and doesn't idle out smooth for about 40 seconds and still blows smoke. i can start driving it and it will run great like nothing happened without smoking anymore and then for the rest of the day the truck will start and run fine for the rest of the day.
It only seems to be in the morning when the truck has been sitting for a while. today was the first cold morning however this happened yesterday and the day before where it was about 65 and 70 degrees outside so i canceled out the glow plugs being an issue.
Please help with any information you may have. i bought a CPS sensor allready but the white smoke is what puts my off ease.
Thank you
TC
This morning and a past few others my truck will not start. It will just crank and crank and maybe want to start and then just quickly dies again. there is alot of white smoke coming out the exhuast and the engine bay after it crank a few times. after about ten min of trying to crank it the truck sometimes starts but very hard and doesn't idle out smooth for about 40 seconds and still blows smoke. i can start driving it and it will run great like nothing happened without smoking anymore and then for the rest of the day the truck will start and run fine for the rest of the day.
It only seems to be in the morning when the truck has been sitting for a while. today was the first cold morning however this happened yesterday and the day before where it was about 65 and 70 degrees outside so i canceled out the glow plugs being an issue.
Please help with any information you may have. i bought a CPS sensor allready but the white smoke is what puts my off ease.
Thank you
TC
Senior User
Joined: Sep 2006
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From: Linden, VA
This is my hunch. Sounds like you glow plugs are not warming the engine. My wife started my truck without waiting for the glow plugs and the results were similar.
Make sure your GPR is functioning
Make sure your GPR is functioning
Hotshot
Joined: Feb 2007
Posts: 10,499
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From: Sterling Heights,Mi
When it happend to me, everyone said glow plugs, like you, I didnt think so, but sure as s@#t, there was cracked GPR relay. THe next year, problems again, loose connection at the top of the GPR relay.
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yeah the only disconcerning part of this is that it happened on days that it is not cold outside. also even if it is a glow plug then why is there all the white smoke it seems like it may be burning oil. i just hope its not due to a possible oil leak. the Glow plugs really are not used on days it is warm out.
Logistics Pro
Joined: Jun 2005
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From: AZ
White smoke is fuel...Next time you start the truck in the morning, turn the key to the running position, then short across the large posts on the GPR with a screwdriver for about 30 seconds. If it starts easier, you'll know the GPR is dead. You then need to ohm out the glowplugs.
I can tell you that the glow plugs are controlled by the PCM and the PCM uses inputs from oil temperature and the BARO sensor, not atmpsheric temperature..I have a light which shows me when the glowplugs are activated by the GPR...you would be surprised at when the PCM "thinks" it needs to run the glowplugs.
I can tell you that the glow plugs are controlled by the PCM and the PCM uses inputs from oil temperature and the BARO sensor, not atmpsheric temperature..I have a light which shows me when the glowplugs are activated by the GPR...you would be surprised at when the PCM "thinks" it needs to run the glowplugs.
Last edited by nlemerise; Oct 29, 2007 at 09:48 AM.
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From: bridgeport ca
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but this would affect even a warm morning start. ok to check the ohms on the GPR what terminals do i test across to check
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From: AZ
Originally Posted by tcm368
but this would affect even a warm morning start. ok to check the ohms on the GPR what terminals do i test across to check
Senior User
Joined: Sep 2006
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From: Linden, VA
There are two large guage wires on the relay. One is hot all the time, the other is hot when the relay is switched on and functioning. You can put an alligator clip on the switched terminal and set your meter so you can see it from the drivers seat. (obviosly connect the black wire to the negative on the batt or engine block). You should have 12 volts when the WTS light comes on and it should cycle after the light turns off. A simple test light will work for this also.
Logistics Pro
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From: AZ
Originally Posted by billfishnut
You should have 12 volts when the WTS light comes on and it should cycle after the light turns off. A simple test light will work for this also.
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so im going to go out to my truck now with my meter is this something i need to do with the truck cold? and the relay on the top of the engine i have two gold plated terminals across from each other one with two heavy gauge brown or black wires i can tell im color blind and the other side is one thicker wire. my friend says at the top is a pinkish thin gauge wire he said and across from that is the same gauge red wire. which terminal am i testing the 12volts at and then which two am i doing the Ohms test on im guessing the two thick brown wires
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From: AZ
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Hello, if it helps, here goes. On my 99 250 PSD, I had all these problems, I changed glow plugs and all related relays, still wouldn't start even @ 80-90 degrees, took it to local shop, sensor for intake air heater was shot, got it replaced, runs like a champ now. Oh yeah, pardon me if I'm not using correct terminology.