Another crank no start.
Thread Starter
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Senior User
Joined: Jan 2005
Posts: 151
Likes: 0
From: Raleigh, nc, usa
Another crank no start.
Just got done installing new heads intake injectors. Ran great. Was towering my 5r too the beach. After 2 hours on the road the truck cut off when I slowed to make a sharp turn. Then again when we slowed down. Then finally again wouldn't restart. It had a crank position code. Related the sensor, no change. Ficm is at 49 volts . what else should I be looking for?
Mountain Pass
Joined: Sep 2005
Posts: 233
Likes: 3
Could be your ICP sensor.....unplug it, and see if it will start. Could be IPR valve. Could be STC fitting. Could be dummy plug/standpipe. Could be upper injector or fuel rail nipple cup seals.....lots of places for the high pressure oil system to leak.
Either take it to a good shop, or buy one of those air fittings to pressurize the oil system....and listen for where the air leak is.
Either take it to a good shop, or buy one of those air fittings to pressurize the oil system....and listen for where the air leak is.
Fleet Mechanic
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Fleet Owner
Joined: Nov 2003
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Verify whether or not you are getting fuel to the secondary fuel filter bowl (have someone turn the key on while you watch the empty bowl - be prepared to tell friend to turn it off quickly). Not sure how you have the Air Dog "plumbed", but you just need to be sure it is working properly.
The ICP volts are dead on for the pressure. I doubt it is the sensor or harness. Might be not enough fuel to spin it and develop the necessary high pressure oil pressure. Your cranking rpm's are VERY marginal.
If you are getting fuel, then more-than-likely it is a real high-pressure oil issue (ie most likely a leak, but could be the IPR or much less likely, the HPOP). Most common leak points as mentioned above for your 2006 are dummy plugs, STC fitting, injector o-rings, then stand pipes.
The ICP volts are dead on for the pressure. I doubt it is the sensor or harness. Might be not enough fuel to spin it and develop the necessary high pressure oil pressure. Your cranking rpm's are VERY marginal.
If you are getting fuel, then more-than-likely it is a real high-pressure oil issue (ie most likely a leak, but could be the IPR or much less likely, the HPOP). Most common leak points as mentioned above for your 2006 are dummy plugs, STC fitting, injector o-rings, then stand pipes.
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Thread Starter
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Senior User
Joined: Jan 2005
Posts: 151
Likes: 0
From: Raleigh, nc, usa
Verify whether or not you are getting fuel to the secondary fuel filter bowl (have someone turn the key on while you watch the empty bowl - be prepared to tell friend to turn it off quickly). Not sure how you have the Air Dog "plumbed", but you just need to be sure it is working properly.
The ICP volts are dead on for the pressure. I doubt it is the sensor or harness. Might be not enough fuel to spin it and develop the necessary high pressure oil pressure. Your cranking rpm's are VERY marginal.
If you are getting fuel, then more-than-likely it is a real high-pressure oil issue (ie most likely a leak, but could be the IPR or much less likely, the HPOP). Most common leak points as mentioned above for your 2006 are dummy plugs, STC fitting, injector o-rings, then stand pipes.
The ICP volts are dead on for the pressure. I doubt it is the sensor or harness. Might be not enough fuel to spin it and develop the necessary high pressure oil pressure. Your cranking rpm's are VERY marginal.
If you are getting fuel, then more-than-likely it is a real high-pressure oil issue (ie most likely a leak, but could be the IPR or much less likely, the HPOP). Most common leak points as mentioned above for your 2006 are dummy plugs, STC fitting, injector o-rings, then stand pipes.
Thread Starter
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Senior User
Joined: Jan 2005
Posts: 151
Likes: 0
From: Raleigh, nc, usa
As a note. I have very limited resources as we are on vacation in a campground. Trying to troubleshoot is tough. This would be a different situation if I had the truck home in my shop.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
So I am going to ask some odd questions.
Ready?
When you installed the heads did you also put fresh oil on the stand pipes when you reinstalled them? What is you battery voltage? If it's low that could be the reason for slow cranking. Unhook the trailer plug
when you crank to see if there is extra load on the batteries. Also check the clamps to be sure that all four are nice and tight. You may even want to clean the clamps and thermals. If you find that the batteries are
a little on the low side see if you can find a charger to get them up to a charged state.
Ready?
When you installed the heads did you also put fresh oil on the stand pipes when you reinstalled them? What is you battery voltage? If it's low that could be the reason for slow cranking. Unhook the trailer plug
when you crank to see if there is extra load on the batteries. Also check the clamps to be sure that all four are nice and tight. You may even want to clean the clamps and thermals. If you find that the batteries are
a little on the low side see if you can find a charger to get them up to a charged state.
Thread Starter
|
Senior User
Joined: Jan 2005
Posts: 151
Likes: 0
From: Raleigh, nc, usa
So I am going to ask some odd questions.
Ready?
When you installed the heads did you also put fresh oil on the stand pipes when you reinstalled them? What is you battery voltage? If it's low that could be the reason for slow cranking. Unhook the trailer plug
when you crank to see if there is extra load on the batteries. Also check the clamps to be sure that all four are nice and tight. You may even want to clean the clamps and thermals. If you find that the batteries are
a little on the low side see if you can find a charger to get them up to a charged state.
Ready?
When you installed the heads did you also put fresh oil on the stand pipes when you reinstalled them? What is you battery voltage? If it's low that could be the reason for slow cranking. Unhook the trailer plug
when you crank to see if there is extra load on the batteries. Also check the clamps to be sure that all four are nice and tight. You may even want to clean the clamps and thermals. If you find that the batteries are
a little on the low side see if you can find a charger to get them up to a charged state.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Start with easy things first. Do you have fuel?
Is it getting to the injectors?
Shutting down when turning one direction points to tank or a wiring issue.
You need to verify fuel pressure first.
By wiring I mean fuel pump wiring.
Is it getting to the injectors?
Shutting down when turning one direction points to tank or a wiring issue.
You need to verify fuel pressure first.
By wiring I mean fuel pump wiring.