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 Update to slight miss, more questions! (Update 2!)
#1039574
12/27/11 06:46 PM
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Joined: Mar 2009
Posts: 294
OP
Mudrunner
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Ok, more info to help diagnose this.
#2 Cylinder is dead at idle, but sparks starting about 1500rpm...even then though it's got a slight miss til redline.
Distributor?
ICM?
Anything?
Last edited by dougl3nc; 01/06/12 03:22 AM.
1989 Raider SWB Auto 3.0L...It's ALIVE!
Currently on a shakedown cruise...
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Re: Update to slight miss, more questions!
[Re: dougl3nc]
#1039575
12/27/11 06:48 PM
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Joined: Jul 2009
Posts: 1,342
Body Damage is Cool
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Is there some crude on the inside of the dist cap? Thats the only thing I can think of if all the other cylinders are firing correctly.
91 Montero LS "Sandstorm", Auto, Dual Bouncy Seats, 2" Suspension lift, 2" Body Lift, GENII front IFS, 32" MT tires
89 Raider "Trailbreaker", 3.0, Auto, Dual Bouncy Seats
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Re: Update to slight miss, more questions!
[Re: dougl3nc]
#1039576
12/27/11 07:07 PM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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Yup if everything else is firing right then my guess would be...
plug, wires, or dist cap.
Based on my 'limited' understanding an ICM issue would affect all cylinders not just one.
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Re: Update to slight miss, more questions!
[Re: off-roader]
#1039577
12/28/11 04:02 AM
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Joined: Feb 2005
Posts: 7,458
Trail Leader
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How about a bad ignition wire?
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Re: Update to slight miss, more questions!
[Re: rxinhed]
#1039578
12/28/11 04:20 AM
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Joined: Nov 2008
Posts: 226
Wheeler
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Bosh "lifetime" wires fall apart like wet spaghetti.
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Re: Update to slight miss, more questions!
[Re: rxinhed]
#1039579
12/28/11 04:57 AM
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Joined: Aug 2009
Posts: 396
Mudrunner
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If you have enough slack...move the #2 wire somewhere else. If the miss follows;then you've found the problem.If not the trouble lies w/ #2....
Va_Stumpy
89 Raider
"Never judge horsepower by exhaust"
3.0
automatic
stock as a rock
Dual Bouncy Seats
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Re: Update to slight miss, more questions!
[Re: Va_Stumpy]
#1039580
01/06/12 03:30 AM
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Joined: Mar 2009
Posts: 294
OP
Mudrunner
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Turns out that the optical eye in the 89 distributor controls the trigger of the fuel injectors as well as ignition...in a most precise manner at that!
Bought a remanufactured Distributor thru AutoZone, installed it, and now it runs PERFECT! $150 thru my commercial account, not bad when there aren't many options.
1989 Raider SWB Auto 3.0L...It's ALIVE!
Currently on a shakedown cruise...
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