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Unread 05-01-2009, 08:54 AM   #1
Drsafety
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1981 CJ7 
 
Join Date: Jun 2008
Location: Hampshire County, WV
Posts: 219
Idle Issue on Cold Start after Carb Cleaner

My jeep has never had any issue holding an idle on a cold start. However, I had to clean up the carb with carb cleaner (big mistake). I sprayed it on the outside and shined it up (note jeep ran fine). Then a few weeks later, I decided to start it up and spray carb cleaner into the carburetor. Well, now my jeep will not idle during cold starts. I have to keep pressing the gas pedal and restart until it warms up. After the motor warms, everything is fine. HELP...

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O||||O 1981 Jeep CJ7 258 (4.2L), T-18, Dana 300, Dana 20 rear, Dana 30 front, Carter BBD w/stepper, Team Rushed / Nutter Bypass
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Unread 05-01-2009, 11:03 AM   #2
Cutlass327
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1978 CJ5 
 
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Location: Beach City, Ohio
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Does it have any sensors on it? I'm not familiar with the newer cards and if they are feedback-type or not. If there is a TPS, then it may have gotten cleaner in it and messed up.

Or it may have been set to run ok before, now that it is clean it's trying to run better... You may have to adjust the idle and such - the dirt isn't making passeages smaller.
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1978 CJ5 258/T177/D300, '86 D30/D44 WT axles, 'glass tub windshield frame, and fenders, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

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Unread 05-01-2009, 11:27 AM   #3
Mike Romain
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1986 CJ7 
 
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That sounds like you maybe dinged the choke linkage or that the choke decided to seize up. Spraying cleaner around only helps for looks, not running, other things you can't see still get dirty and jam up. A proper rebuild kit for it runs about $20.00.

I would be opening the air filter on the cold off engine to be sure the choke is closing after one shot on the gas pedal. If it isn't, then you need to find out where it is binding up. You need th one shot on the pedal to set the choke closed and to set the fast idle cam.

I have seen the choke thermostat shaft seize up on a few of them in the past even.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Unread 05-01-2009, 11:33 AM   #4
Drsafety
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1981 CJ7 
 
Join Date: Jun 2008
Location: Hampshire County, WV
Posts: 219
Quote:
Originally Posted by Cutlass327 View Post
Does it have any sensors on it? I'm not familiar with the newer cards and if they are feedback-type or not. If there is a TPS, then it may have gotten cleaner in it and messed up.

Or it may have been set to run ok before, now that it is clean it's trying to run better... You may have to adjust the idle and such - the dirt isn't making passeages smaller.
Not sure about any sensors...Your second point sounds like it may be true...Although, would the jeep run okay once warmed up if it were the idle? Thanks for your input!
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