1999 CHEVY SILVERADO Z71 starting problem.
Engine size = 5.3
dash lights = NO
Repairs done prior = HARD TO START, CHANGED FUEL FILTER, PUMP, SPARK PLUGS
AND AM NEEDING TO KNOW WHERE ETHE CRANK SHAFT SENSOR IS LOCATED
tech = ANY
question = WHERE IS THE CRANKSHAFT SENSOR LOCATED?
MW:
Hello and welcome. The Crankshaft position sensor on that engine is on the side of the
block behind the starter. The starter will have to be removed to get to it. After replacement,
a 'crank position variance re-learn' procedure will have to be done to calibrate the system.
Not sure if a high end after market scanner can do this or not. The dealer scanner does.
There are a couple of common things on these trucks that cause a hard start/long crank
time. Let me know what happens after the crank sensor replacement if you would like more
help.
Engine size = 5.3
dash lights = NO
Repairs done prior = HARD TO START, CHANGED FUEL FILTER, PUMP, SPARK PLUGS
AND AM NEEDING TO KNOW WHERE ETHE CRANK SHAFT SENSOR IS LOCATED
tech = ANY
question = WHERE IS THE CRANKSHAFT SENSOR LOCATED?
MW:
Hello and welcome. The Crankshaft position sensor on that engine is on the side of the
block behind the starter. The starter will have to be removed to get to it. After replacement,
a 'crank position variance re-learn' procedure will have to be done to calibrate the system.
Not sure if a high end after market scanner can do this or not. The dealer scanner does.
There are a couple of common things on these trucks that cause a hard start/long crank
time. Let me know what happens after the crank sensor replacement if you would like more
help.
Other related articles:
Chevy Silverado hard to start and dies
VISITOR:
it cranks too long and doesn't start but can turn off and on again and can start
fine.
MW:
OK, thanks. A few things to look at in the fuel system.
Most common is a leaking fuel pressure regulator (FPR). They leak raw fuel or
vapor into the vacuum line, and cause a rich condition and cause a hard
start/extended crank. Cycling the key, or revving it up to clear it out usually gets
it to start and run fine. The fuel pressure regulator is on the dr. Side of the fuel
rail under the engine cover. It is about in the middle, with 1 vacuum line to it.
Also there is an older Service Bulletin regarding the fuel filler tube deteriorating
inside and causing small particles to enter the fuel and make the injectors stick.
That usually will give p0300 misfire codes. Check those things and let me know.
it cranks too long and doesn't start but can turn off and on again and can start
fine.
MW:
OK, thanks. A few things to look at in the fuel system.
Most common is a leaking fuel pressure regulator (FPR). They leak raw fuel or
vapor into the vacuum line, and cause a rich condition and cause a hard
start/extended crank. Cycling the key, or revving it up to clear it out usually gets
it to start and run fine. The fuel pressure regulator is on the dr. Side of the fuel
rail under the engine cover. It is about in the middle, with 1 vacuum line to it.
Also there is an older Service Bulletin regarding the fuel filler tube deteriorating
inside and causing small particles to enter the fuel and make the injectors stick.
That usually will give p0300 misfire codes. Check those things and let me know.
| 12-3-10 need a crankshaft positioning sensor. |
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