Birty Dastards Jeep Club
Tech Forum => Workshop => Topic started by: Harleyfatboy on June 29, 2006, 11:21:28 PM
-
Can anyone please advise.
98 Grand Cherokee Oris 4ltr, converted to LPG. The car normally runs brilliant but has started to misfire and tickover is very erratic, this dosent happen all the time and can go weeks with no problem. I travelled 80 miles today mostly on motorway after about 70 miles on cruise control it occasionally missed (bit like hickups), when i stopped and came back to the car after a few hours it struggled to tick over and was very erratic. if i floor the pedal it eventually picks up and problem goes away, its the same on Petrol and LPG, wet or dry conditions.
I have replaced leads & plugs, any ideas where to look? :(
-
Crud in the idle port in the throttle body?
-
O2 sensor?
-
t p s
-
-
Combination of Throttle position sensor and idle air bypass valve.
Regards,
-
how about a shot at a build up of polypropalene residue from the lpg system in the throtle body