Mechanic Question(s)
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
Pull the secondary lid and have someone cycle the key for a couple of seconds--it may take less. The housing should fill VERY quickly. If it doesn't then you have a fuel pump problem of some kind. CAUTION--FUEL MAY SPRAY SO USE PROTECTION!!!!!!!!!
Fleet Owner
Joined: Nov 2003
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It is your vacuum pump - nothing to do w/ the no-start.
No rpm's when cranking indicates a possible issue w/ the CKP. The sensor itself doesn't fail that often - the connector and wiring has a higher failure rate - although infrequent, there are crankshaft sensor failures.
No rpm's when cranking indicates a possible issue w/ the CKP. The sensor itself doesn't fail that often - the connector and wiring has a higher failure rate - although infrequent, there are crankshaft sensor failures.
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From: Whiteville
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Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
I saw this in another thread: You might check under the airfilter for wire chaffing. You could have a harness problem there causing CMP/CKP sensor issues which would cause a no start. Did you ever get a scanner to check for codes?
I had a similar issue with my 04 that I never found the cause of. I walked out one morning and it just wouldn't start for no apparent reason. I spent the day going through harnesses looking for chaffing, bad connections, etc. Checked the PCM/TCM connections, rewrapped/overhauled the FICM harness, EVERYTHING I could find with no apparent issues. Plugged it all back in and reassembled everything and the truck fired right up. I never did find the issue and have had no problem since (knock on wood). I know this doesn't really help, but similar experience.
I had a similar issue with my 04 that I never found the cause of. I walked out one morning and it just wouldn't start for no apparent reason. I spent the day going through harnesses looking for chaffing, bad connections, etc. Checked the PCM/TCM connections, rewrapped/overhauled the FICM harness, EVERYTHING I could find with no apparent issues. Plugged it all back in and reassembled everything and the truck fired right up. I never did find the issue and have had no problem since (knock on wood). I know this doesn't really help, but similar experience.
Fleet Owner
Joined: Nov 2003
Posts: 27,890
Likes: 3,607
The Crank Sensor drives the tach. If the tach isn't moving, the crank sensor is likely to have died (CKP) or have bad wiring.
Located underneath the A/C compressor. It is very hard to get to. You need long skinny arms for the job. FYI - it is easier to unplug the sensor with it in the hole. The o-ring can fail and the connector can get oil soaked and fail.
Located underneath the A/C compressor. It is very hard to get to. You need long skinny arms for the job. FYI - it is easier to unplug the sensor with it in the hole. The o-ring can fail and the connector can get oil soaked and fail.
