1889 Isuzu Trooper 4ez cycl 2600cc fast idles too high hot at low downshifting speed, sometimes surges and although it drops abruptly as the car stops moving, it is mostly too high at idle (1500rpm). Gun it and sometimes it goes down to 1000rpm, but motly not. Has new 02 sensor and just cleaned plugs, rotor and cap, timing is on, all vac hoses in good condition, spray cleaned the butterfly valved of the common chamber. When I press manually on the air intake throttle link at the common chamber (air intake) I can get it to go down to 1000 rpm. Can't adjust it below 1000 and should be able to. Any sensors or settings I need to check or adjust? Thanks. Paul
have the same problem?
Thursday, January 13th, 2011 AT 11:37 PM