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Truck stopped running

Tiny
GARYLEE STIFFLER
  • MEMBER
  • 1996 GMC TRUCK
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 233,000 MILES
Was driving truck running fine just died replaced fuel pump and filter plugs distributor cap and rotor timming chain crank sensor still will not start and still backfires through exhaust
Monday, January 11th, 2016 AT 11:45 AM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and wiggle test crank sensor, also pull it out and see if any sludge on end of sensor. See if any movement in rotor under dist cap there should be none it may have worn the gear down on dist if there is any movement.
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Monday, January 11th, 2016 AT 12:20 PM
Tiny
GARYLEE STIFFLER
  • MEMBER
  • 6 POSTS
Scanned no codes new distibutor and crank sensor
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Monday, January 11th, 2016 AT 12:38 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuses under hood and a different key the diode in key may be bad. Fuel pressure should be 60-66 psi
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Monday, January 11th, 2016 AT 12:57 PM
Tiny
GARYLEE STIFFLER
  • MEMBER
  • 6 POSTS
Seem like there is alot of back pressure but has no catalytic converter
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Monday, January 18th, 2016 AT 6:24 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Doe what I've said in previous replies
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Monday, January 18th, 2016 AT 8:40 AM
Tiny
GARYLEE STIFFLER
  • MEMBER
  • 6 POSTS
Yes I have
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Monday, January 18th, 2016 AT 10:14 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
What was fuel pressure?
Also check fuses under hood then check crank sensor in timing cover sometimes with a lot of sludge on them it won't work right. Is this getting spark or fuel or both?
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Monday, January 18th, 2016 AT 11:53 AM
Tiny
GARYLEE STIFFLER
  • MEMBER
  • 6 POSTS
It's getting spark and fuel I'm starting to think it's something internal
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Monday, January 25th, 2016 AT 2:20 AM

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