99 silverado problem

Nitrovreins · #1 08-05-2009, 11:08 AM

I have 99 silverado that i have put a new fuel pump, filter, new plugs and wires. And it still has a sputtering, misfire kinda. Took it to get it diagnosed and two different places said there was no power to plug. Any suggestions?

Airjer_ · #2 08-05-2009, 12:05 PM

Quote:

Originally Posted by Nitrovreins

two different places said there was no power to plug. Any suggestions?

There was no spark at one of the spark plugs?

Nitrovreins · #3 08-05-2009, 12:31 PM

Quote:

Originally Posted by Airjer_

There was no spark at one of the spark plugs?

No power to the diagnosis plug but i was just looking at it and everything seems fine under the dash. Thanks for any info

Airjer_ · #4 08-05-2009, 12:49 PM

Did they check the cigar fuse to see if it was blown?

Nitrovreins · #5 08-05-2009, 12:55 PM

Quote:

Originally Posted by Airjer_

Did they check the cigar fuse to see if it was blown?

Dont think so but i sure will, will that cause no reading though?

Airjer_ · #6 08-05-2009, 02:35 PM

Yes, The ALDL has to have a power and ground for a scan tool to communicate through it. If the fuse is blown, there is no communication!

j cAT · #7 08-05-2009, 04:32 PM

Quote:

Originally Posted by Nitrovreins

I have 99 silverado that i have put a new fuel pump, filter, new plugs and wires. And it still has a sputtering, misfire kinda. Took it to get it diagnosed and two different places said there was no power to plug. Any suggestions?

with your engine problem,,,,what is the engine in this 1999 silverado?

Nitrovreins · #8 08-05-2009, 05:08 PM

Found out the problem, the cigar fuse was blown changed it, had it tested it was #7 cylinder random misfire. Come to find out one of the new plugs that was put in, the porcelain was cracked causing it to misfire. Changed plug, no more problems and no SES codes or light. Thanks for all the help guys.

Nitrovreins · #9 08-05-2009, 05:09 PM

Quote:

Originally Posted by j cAT

with your engine problem,,,,what is the engine in this 1999 silverado?

This is the 5.3 L engine

j cAT · #10 08-05-2009, 05:53 PM

Quote:

Originally Posted by Nitrovreins

This is the 5.3 L engine

some plug types you can adj/check the gap...with plugs of this type it is very easy to break the center electrode ceramic...

also if the plug was dropped...

Airjer_ · #11 08-06-2009, 01:09 AM

I'm surprised the shop(s) didn't check the fuse?

Nitrovreins · #12 08-06-2009, 10:46 AM

Quote:

Originally Posted by Airjer_

I'm surprised the shop(s) didn't check the fuse?

Looks like they should have known, but im glad i found out on here to check it. Thanks again for all the help.

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