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Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17138
Experience:  15 years GM master tech
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1999 chevy astro van 4.3 v6 vortec mil code p0305 misfire

Customer Question

1999 chevy astro van 4.3 v6 vortec mil code p0305 misfire cylinder number 5,hesitates up hill under load? many new parts installed
Submitted: 3 months ago.
Category: Chevy
Expert:  Gary replied 3 months ago.

Welcome! My name is ***** ***** I will do my best to assist you with this problem.Ask me about added features such as phone contact anytime if you wish !

Expert:  Gary replied 3 months ago.

can you tell me everything that was done to correct this issue so far ?

Customer: replied 3 months ago.
new spark plugs, new cap n rotor, new fuel filter,new map sensor, new throttle pos sensor, new coil , new ignition module,new heat sink ,new spark plug wires, check compression all cylinders 200psi, 62psi fuel pressurre?
Expert:  Gary replied 3 months ago.

has the injectors been pressure cleaned yet ?

Customer: replied 3 months ago.
has cylinder 5 misfire after changing cap n rotor, before changing cap n rotor had cylinder misfire number 4,changed number 4 injector with good one?
Customer: replied 3 months ago.
no
Expert:  Gary replied 3 months ago.

crank sensor new ?

Customer: replied 3 months ago.
Customer: replied 3 months ago.
asked every garage and person i know know one knows why?
Customer: replied 3 months ago.
on straight aways runs real good opens right up, but give to much gas on hills under load hesitates engine light comes on cylinder number 5?
Customer: replied 3 months ago.
misfire cylinder number 5, was cylinder number 4 until i changed cap n rotor now cylinder number 5?
Expert:  Gary replied 3 months ago.

if the crank sensor is NEW and the distributer lower gear is NOT worn down try another cap and rotor ( ive had issues right out of the box with them ) if it still acts up with it having good compression pressure clean the injectors if it still acts up replace the injector

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