11-25-2005, 07:13 PM
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#1
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AF Newbie
Join Date: Nov 2005
Location: alliance, Nebraska
Posts: 2
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My truck is misfiring
My 1997 chevy silverado is misfiring. It is happening in drive or over drive at about 2450 rpm. Here is a list of things I have alerady tried, with no sucess. throttle position sensor, plugs, plug wires, cap, rotor, mass air flow sensor, coil, checked for pluged PCV. So it still misses at a constant rpm. If I accelerate there is no miss. It runs all the way up till the governer shuts it down. I cant figure it out. any help would be great.. Thanks, Mike
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11-25-2005, 09:47 PM
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#2
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AF Regular
Join Date: May 2005
Location: imperial, Missouri
Posts: 217
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Re: My truck is misfiring
check eng. light? codes? not all codes will turn the light on.
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11-26-2005, 12:14 AM
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#3
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AF Enthusiast
Join Date: Nov 2004
Location: Winnipeg, Manitoba
Posts: 742
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Re: My truck is misfiring
Well for one thing, you are in the wrong forum. This is for 99 and up nbs silverados. But when is the last time you changed the fuel filter and at the very least run a bottle of injector cleaner through the system if not having taken it in and had them professionally cleaned ?
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11-26-2005, 02:52 AM
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#4
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AF Enthusiast
Join Date: Apr 2004
Location: Kailua, Hawaii
Posts: 185
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Re: My truck is misfiring
Quote:
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Originally Posted by pstmj
My 1997 chevy silverado is misfiring. It is happening in drive or over drive at about 2450 rpm. Here is a list of things I have alerady tried, with no sucess. throttle position sensor, plugs, plug wires, cap, rotor, mass air flow sensor, coil, checked for pluged PCV. So it still misses at a constant rpm. If I accelerate there is no miss. It runs all the way up till the governer shuts it down. I cant figure it out. any help would be great.. Thanks, Mike
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have you tried the ignition module, usually a little bannana shaped black piece of plastic under the dist. cap, has five or six contacts.
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99 Z-71 5.3 liter. Jet stage 2, volant cool air intake, flowmaster 40 series, billet grill, clear corners, chrome bed rails, pioneer cd player, Infinity Kappa speakers, silverstars. http://www.cardomain.com/ride/2094079
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11-26-2005, 09:17 AM
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#5
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AF Newbie
Join Date: Nov 2005
Location: alliance, Nebraska
Posts: 2
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Re: Re: My truck is misfiring
Quote:
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Originally Posted by jers99z
have you tried the ignition module, usually a little bannana shaped black piece of plastic under the dist. cap, has five or six contacts.
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I did try the ignition module, to no avail.
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11-26-2005, 11:34 AM
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#6
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AF Regular
Join Date: May 2005
Location: Dover, Delaware
Posts: 64
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How about the crank position sensor?
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11-26-2005, 11:02 PM
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#7
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AF Enthusiast
Join Date: Mar 2005
Location: Smyrna, Georgia
Posts: 2,383
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Re: My truck is misfiring
How about checking for vacuum leaks?
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2002 ECSB, Nelson Tune, LS1 electric fans, 145A alternator, K&N FIPK, 160º T-stat, TB coolant bypass, Corvette servo, 4 headlight mod, blue LED gauge cluster |
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