Crank but no start
09-21-2008, 08:54 PM
#1
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Crank but no start
91 f150 4.9 liter timing gear broke replaced timing gear, wouldnt start changed distributor,coil,module and starter solenoid started first shot. noticed i had a water leak[cracked thermostat housing] replaced housing now it will crank but wont start. Checked codes threw 52, 25, 56. tested compression was between 130 and 150. has fuel iam getting spark. please help
Last edited by Twinz181; 09-21-2008 at 09:04 PM.
09-23-2008, 06:07 PM
#5
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When you turn the key to 'on' but don't start the truck, do you hear the fuel pump whine for a second? I'm just taking a wild guess that the fuel pump isn't working, but I'm not really sure based on the oddball codes that you're getting.
09-23-2008, 09:51 PM
#7
Yea buddy. I was wondering if someone would comment on that.
Let's see here, code 25= knock not sensed during dynamic test. Dynamic test is the engine running test, so it's pretty hard to get this code without the engine running.
Code 52= power steering pressure switch always open or closed. No big deal, this would affect idle but not too often.
Code 56, I actually found a meaning for this for your truck, I must have skipped right over it. Unfortunately, I have no idea what it means. This is how it is written exactly- TOT reads −40<deg.>F or circuit open (E4OD). It seems to be an automatic transmission code. If someone knows what the TOT sensor is I might be able to figure something out, but if it's a transmission code it probably won't matter to get the engine running.
Because of the engine running code with the engine not running, I'm going to guess a computer problem. If it were my truck, I would try changing the computer, but remember that's the best reasonable guess I have.
Let's see here, code 25= knock not sensed during dynamic test. Dynamic test is the engine running test, so it's pretty hard to get this code without the engine running.
Code 52= power steering pressure switch always open or closed. No big deal, this would affect idle but not too often.
Code 56, I actually found a meaning for this for your truck, I must have skipped right over it. Unfortunately, I have no idea what it means. This is how it is written exactly- TOT reads −40<deg.>F or circuit open (E4OD). It seems to be an automatic transmission code. If someone knows what the TOT sensor is I might be able to figure something out, but if it's a transmission code it probably won't matter to get the engine running.
Because of the engine running code with the engine not running, I'm going to guess a computer problem. If it were my truck, I would try changing the computer, but remember that's the best reasonable guess I have.
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09-23-2008, 11:29 PM
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Should be "Out wheeling"
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Yea buddy. I was wondering if someone would comment on that.
I have no idea what it means. This is how it is written exactly- TOT reads −40<deg.>F or circuit open (E4OD). It seems to be an automatic transmission code. If someone knows what the TOT sensor is I might be able to figure something out, but if it's a transmission code it probably won't matter to get the engine running.
I have no idea what it means. This is how it is written exactly- TOT reads −40<deg.>F or circuit open (E4OD). It seems to be an automatic transmission code. If someone knows what the TOT sensor is I might be able to figure something out, but if it's a transmission code it probably won't matter to get the engine running.