missfire

15

Asked by Jun 26, 2009 at 06:32 AM about the 1999 Chevrolet Silverado 1500

Question type: Maintenance & Repair

i have a 99 with the 5.3 and ive had a cylinder 7 misfire for a while ive change the plugs wires and coil pack and still have the problem i know it aint spark what else could cause it without having to pull the fuel injetor to replace it

3 Answers

5

I had a similar problem with my 01 5.3. I ended up taking it to a GM shop and haveing it scanned and they said there was a glitch in the computer going to the sending unit?

15,145

It may be the injector is not squirting right, which would be the computer sensor not telling it to fire at the correct time. Have it checked before going too much further.

15,145

Also is there a sensor on the cam that sends a message of when to fire the injectors? These have gone bad in the past.

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