Hesitation bug, and bad idle

Jeff Chambers · 11-28-2006, 10:43 PM

Two things usually lead to a surging idle, (1) lean condition and/or (2) too much timing. C&L meters are notorious for creating lean conditions at the low end of the transfer function. By any chance do you have an open breather on the car?

289 · 11-30-2006, 10:43 PM

Thanks for the info
as far as an open breather I don't think I do I will double check all the hoses.
It might be the C&L that made is worse is there a way to get by this problem?
Thanks for the info

Mustang Billy · 12-07-2006, 08:50 PM

Quote:

Originally Posted by Jeff Chambers

Two things usually lead to a surging idle, (1) lean condition and/or (2) too much timing. C&L meters are notorious for creating lean conditions at the low end of the transfer function. By any chance do you have an open breather on the car?

Exactly what jeff said....

Also check you TP Sensor and see what you voltage is and if it is reading right...If it is working right ,get an "VOLTAGE" meter and set it too .98-.99 for best throttle response...

Check at night after it has bee driven and in the dark and see if you have any spark plug boots arcing on something or down in the holes and arcing too the block...I have had them do that before also when at a higher gear and under a low rpm trying too cruise,it would do that and drive me nuts...Just another opinion...

1989GT · 12-07-2006, 09:28 PM

Quote:

get an ohm meter and set it too .98-.99 for best throttle response...

Actually that'd be Voltmeter, but I'm sure that's what you meant.

Mustang Billy · 12-07-2006, 09:34 PM

Quote:

Originally Posted by 1989GT

Actually that'd be Voltmeter, but I'm sure that's what you meant.

lol....Yeah, My mind and fingers aren't on the same pace...I do that often...

FIXED....

11-28-2006, 10:43 PM	#1
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Hesitation bug, and bad idle Two things usually lead to a surging idle, (1) lean condition and/or (2) too much timing. C&L meters are notorious for creating lean conditions at the low end of the transfer function. By any chance do you have an open breather on the car? __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

11-30-2006, 10:43 PM	#2
289 Registered Member Join Date: Jan 2000 Location: Mount Joy, PA , U.S. Posts: 198	Re: Hesitation bug, and bad idle Thanks for the info as far as an open breather I don't think I do I will double check all the hoses. It might be the C&L that made is worse is there a way to get by this problem? Thanks for the info