Helps with low idle and fuel dumping
Thread Starter
Newbie
Joined: Feb 2018
Posts: 16
Likes: 0
Year: 1993
Model: Cherokee(SJ)
Engine: 4.0L
Helps with low idle and fuel dumping
my 1995 Zj 5.2 when warm has a very low idle in D, just above 0. It’s slightly better in Park about 4-500.
its also dumping fuel, I get 250k to a 80l Tank.
Fuel pressure is 40psi and the Vacuum test is steady 20-Vacuum.
I’ve replaced the spark plugs, air filter, Map sensor, IAC, TPS and o2 sensor I also cleaned the throttle body And nothing...
it runs good aside from the low idle terrible fuel consumption and a minor thud when sifting into 3rd.
its also dumping fuel, I get 250k to a 80l Tank.
Fuel pressure is 40psi and the Vacuum test is steady 20-Vacuum.
I’ve replaced the spark plugs, air filter, Map sensor, IAC, TPS and o2 sensor I also cleaned the throttle body And nothing...
it runs good aside from the low idle terrible fuel consumption and a minor thud when sifting into 3rd.
CF Veteran
Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
my 1995 Zj 5.2 when warm has a very low idle in D, just above 0. It’s slightly better in Park about 4-500.
its also dumping fuel, I get 250k to a 80l Tank.
Fuel pressure is 40psi and the Vacuum test is steady 20-Vacuum.
I’ve replaced the spark plugs, air filter, Map sensor, IAC, TPS and o2 sensor I also cleaned the throttle body And nothing...
it runs good aside from the low idle terrible fuel consumption and a minor thud when sifting into 3rd.
its also dumping fuel, I get 250k to a 80l Tank.
Fuel pressure is 40psi and the Vacuum test is steady 20-Vacuum.
I’ve replaced the spark plugs, air filter, Map sensor, IAC, TPS and o2 sensor I also cleaned the throttle body And nothing...
it runs good aside from the low idle terrible fuel consumption and a minor thud when sifting into 3rd.
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