Intermittent no start ???
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Intermittent no start ???
It's a '97 F350 5 speed, stock. When it doesn't start, It cranks fine. Then try again a little later and it starts right up. Batteries are good. Glow plugs/relay test ok. Block heater works. Fuses good. Fuel looks ok in the filter housing. No check engine light. Can communicate with ecm, has codes P0236 & P0237. I don't think these will result in a no start, but maybe?
Everything seems normal on start up (except the not starting part), except once. One time, when it wouldn't start, the dash warning lights flickered and the wait to start light didn't come on, when the key was put in the run position. Turned the key to crank, cranked fine. turned key off and tried again and dash lights were back to normal, but still wouldn't start. Thinking I had a loose/bad connection, I grabbed and shook the wire harnesses in the engine compartment tried again and it started. Tried that on another occasion with no luck.
Any help would be greatly appricated. Thanks,
Matt
Everything seems normal on start up (except the not starting part), except once. One time, when it wouldn't start, the dash warning lights flickered and the wait to start light didn't come on, when the key was put in the run position. Turned the key to crank, cranked fine. turned key off and tried again and dash lights were back to normal, but still wouldn't start. Thinking I had a loose/bad connection, I grabbed and shook the wire harnesses in the engine compartment tried again and it started. Tried that on another occasion with no luck.
Any help would be greatly appricated. Thanks,
Matt
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No I haven't chaged the CMP sensor. what is it and what does it do?
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
Fleet Mechanic
Joined: May 2005
Posts: 1,739
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From: Vale, NC
No I haven't chaged the CMP sensor. what is it and what does it do?
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
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Ok. the cam position sensor was replaced years ago at the dealer. it was a bulletin or something about an updated part. That being said, wouldn't no signal from that sensor leave a code in memory immediately? Still, since it's been years, wouldn't hurt to change it anyway. Thanks for the input.
any other ideas from anyone is still appreciated.
any other ideas from anyone is still appreciated.
Fleet Mechanic
Joined: May 2011
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From: Thornhill , Ontario
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It's a '97 F350 5 speed, stock. When it doesn't start, It cranks fine. Then try again a little later and it starts right up. Batteries are good. Glow plugs/relay test ok. Block heater works. Fuses good. Fuel looks ok in the filter housing. No check engine light. Can communicate with ecm, has codes P0236 & P0237. I don't think these will result in a no start, but maybe?
Everything seems normal on start up (except the not starting part), except once. One time, when it wouldn't start, the dash warning lights flickered and the wait to start light didn't come on, when the key was put in the run position. Turned the key to crank, cranked fine. turned key off and tried again and dash lights were back to normal, but still wouldn't start. Thinking I had a loose/bad connection, I grabbed and shook the wire harnesses in the engine compartment tried again and it started. Tried that on another occasion with no luck.
Any help would be greatly appricated. Thanks,
Matt
Everything seems normal on start up (except the not starting part), except once. One time, when it wouldn't start, the dash warning lights flickered and the wait to start light didn't come on, when the key was put in the run position. Turned the key to crank, cranked fine. turned key off and tried again and dash lights were back to normal, but still wouldn't start. Thinking I had a loose/bad connection, I grabbed and shook the wire harnesses in the engine compartment tried again and it started. Tried that on another occasion with no luck.
Any help would be greatly appricated. Thanks,
Matt
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Fleet Mechanic
Joined: May 2005
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From: Vale, NC
No I haven't chaged the CMP sensor. what is it and what does it do?
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
The oil is full and in good condition. It has not started after it has sat for as short as 4 hours to as long as over night. the block heater is pluged in over night, and it has not started in the morning.
One more thing, it is just shy of 197K miles.
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Just a thought, but I wonder if there is something wrong with your anti-theft thing. I am not really sure if they are in this truck the same as my 01 F150, but in that vehicle if the dash doesn't recognize the key then you got no start even though it cranks fine - won't let it fire. Does yours have that built in alarm feature - anti-theft I think Ford calls it? When i replaced my brain box i had to have a locksmith come out and re-program the box to the keys. It took him a few tries because it is actually 3 parts - keys, brain and dash. Good luck as I have no idea how you would go about diagnosing it.
Nope, none of that stuff on my truck.
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just an update, but still no solution. was starting fine until yesterday afternoon, left me stranded at work. when i went to start it today it did something funny, but started. while cranking it, for lack of a better word, it studdered a quick second and the wait to start light came on. i never stoped cranking it and it started. it wasn't an excessively long crank either. i would call it normal, like any other time you go to start it.
to try to rule out the cam sensor, i unpluged it and tryed to start the truck. no check engine light, but a code in memory for a cam sensor. another code was present as well, P0603 internal control module KAM malfunction. i wonder if it was related to the "studder" on crank or if it goes along with the upluged cam sensor. i'll do some research on it.
any other ideas welcome.
to try to rule out the cam sensor, i unpluged it and tryed to start the truck. no check engine light, but a code in memory for a cam sensor. another code was present as well, P0603 internal control module KAM malfunction. i wonder if it was related to the "studder" on crank or if it goes along with the upluged cam sensor. i'll do some research on it.
any other ideas welcome.
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From: Dundas, IL
Brooks
Fleet Mechanic
Joined: May 2011
Posts: 1,414
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From: Thornhill , Ontario
Yes sir...there is also a IDM relay.....So you did not change the CMP sensor yet ? The fuel heater or wire to it could be shorting out as well as stated in previous post...is there a blown fuse ?