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AMEDEE
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 21868
Experience:  ASE MASTER TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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pcm..rotor spark plugs an wires fuel filter ign.coil air filter an ign

Customer Question

my truck still slow to start an i have replaced the pcm dist.cap rotor spark plugs an wires fuel filter ign.coil air filter an ign.switch an still verry slow start or no start
Submitted: 3 years ago.
Category: Chevy
Expert:  AMEDEE replied 3 years ago.
Hello!

Are you saying that the engine is cranking over slow or the engine is cranking over fast but is slow to start (fire up)?
Customer: replied 3 years ago.
slow to start up cranking over fine
Expert:  AMEDEE replied 3 years ago.
Have you checked fuel pressure?
Customer: replied 3 years ago.
yes i have about 62 or 63 psi
Expert:  AMEDEE replied 3 years ago.
Sorry for the delay!

Does the engine start any faster if you were to spray starting fluid into the intake when cranking the engine over?

Are there any codes in the computer?
Customer: replied 3 years ago.
1351
Expert:  AMEDEE replied 3 years ago.
Excellent!

WHat year is your vehicle?
Customer: replied 3 years ago.
2000 chevy silverado pick up 4.3 engine
Expert:  AMEDEE replied 3 years ago.
Sorry for the delay!

This code can set during extended cranking if the engine does not start. Be sure that the fuel pressure does not drop off with the key off and remains at about 60 psi when cranking the engine over. Sometimes the fuel pressure regulator or the injectors can go bad causing low crank times causing this code.

If you have access to a scanner or can get access to a scanner, check the scanner data for Vehicle Theft Deterrent (VTD) "fuel enable" to be active/inactive for a possible security system problem not allowing the vehicle to start.

Also, check the Ignition Control wire, White/Black, between the IC and the Ignition Module (IM). Sometimes this wire will break or have poor terminal contact which will cause this type of condition.

Also, sometimes just bad tune up parts will cause this condition too! (But I think you said that you have replaced them already)
If all checks out, then you might just have a bad ignition module or even a bad PCM.

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