4.0 low idle when cold


ernieb

15+ Year Member

Joined
Sep 19, 2007
Messages
13
Points
3,101
Age
57
Vehicle Year
1991
1970
Transmission
Manual
Hi guys,
Been a while since I was here...usually only drop n when I have trouble :dntknw: Actually I had to re-register? Whatsup wid dat?
Anyway, I have over 175,000 miles on my '91 4x4 with 4.0, 5 speed.
Recently noticed sometimes it idles very low, maybe 500rpm, even to the point of the dashlight flickering. But if I ride the throttle a little it runs OK.
After it warms up, maybe 10 minutes, it idles fine.

Any ideas?
EB
 

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