No start, then started
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
No start, then started
Ok, well I drove the truck off and on all day,parked it for couple hours with the nose headed down a slight hill. Come out to go home, truck cranks no start. SG2 says 275 om ICP, so pull wires of truck starts just fine. Plug ICP up come home cut the truck off and starts like a dream....
Any ideas????
Any ideas????
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
That would worry me a little. Maybe you could park nose way down at home to check it. At least you wouldn't be stranded "somewhere". I guess it's also possible the ICP connector wasn't making a good connection and un plugging and plugging it back in helped.
Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 242
From: Saratoga Springs,UT
I think he has a HPO Leak Eric
Better do the Full Deal for HPO Diagnostic
OPERATING VALUES
Just make shure the numbers are taken exactly like this
Truck in PARK OR NEUTRAL all times during test
ECT at 190* or close to And EOT at 185* or higher
A/C OFF
----------------------------------------------------------------------------------
#1-------KOEO=Key On Engine Off =record EACH sensor value and POST IT!!
#2-------Low Idel (truck idel on its own)=record EACH sensor value and POST IT!!
#3-------High Idel (2500RPM)=record EACH sensor value and POST IT!!
Do this for
ICP
ICPV
IPR%
Better do the Full Deal for HPO Diagnostic
OPERATING VALUES
Just make shure the numbers are taken exactly like this
Truck in PARK OR NEUTRAL all times during test
ECT at 190* or close to And EOT at 185* or higher
A/C OFF
----------------------------------------------------------------------------------
#1-------KOEO=Key On Engine Off =record EACH sensor value and POST IT!!
#2-------Low Idel (truck idel on its own)=record EACH sensor value and POST IT!!
#3-------High Idel (2500RPM)=record EACH sensor value and POST IT!!
Do this for
ICP
ICPV
IPR%
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
[quote=BLADE35;12550514]Plug ICP sensor back in
then post
ICPV at KOEO = .25
Running = .85 at idle
then post
ICPV at KOEO = .25
Running = .85 at idle
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Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 242
From: Saratoga Springs,UT
[quote=tjustice;12550555]
So from those Numbers the ICP Sensor is Good
What happens when you unplug ICP Sensor and get it to start is the PCM Will use a Default ICP value.
So in your case I suspect the ICP Default value will turn on FICM and Fire injectors
Probably a Really small Leak or weak HPOP
Now Post IPR% at Idel if its any Higher thasn say 30% at Idel you have a Problem/Leak
So from those Numbers the ICP Sensor is Good
What happens when you unplug ICP Sensor and get it to start is the PCM Will use a Default ICP value.
So in your case I suspect the ICP Default value will turn on FICM and Fire injectors
Probably a Really small Leak or weak HPOP
Now Post IPR% at Idel if its any Higher thasn say 30% at Idel you have a Problem/Leak
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Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
Yes it was plugged in.
I work 24 hour shifts, it sets for probably 26 hours every other day and has fired right up. First time it has done this..Getting ready to post pic of numbers.
