04-21-2013, 01:47 AM
(This post was last modified: 04-28-2013, 04:33 AM by hatchetman.)
Hi forum members,
I have an issue with the hot idle on my 96 Tracker. It will not regulate down to 800 steadily. It holds steadily at 1000 but then I adjust air bleed screw(closing it) and seems like ISC cannot control idle. I pinched top hose on ISC at 1000 rpm idle and engine nearly stalls, however unplugging the connector does not have the same effect (nearly stalling engine)
I already took off ISC and left it soaking overnight a couple times, checked it against the video of testing ISC on fixkick.com by applying direct 12 v to the ISC connector and see by eye how well it closes and hear how good it snaps. I thought by looking and hearing at the ISC action that it was okey but blowing through the hose with the ISC in my hand without 12v applied I think air leaks through too much.
I screwed in close the air bleed screw and measured depth with a caliper, it measured around 14mm. I then opened it back up to 50% (around 7mm) tried running the car like that and idle went really high and erratic, from 1400 to 2000 rpm up and down, up and down in a way that I could see tachometer needle swinging up and down up and down, not progressively going up or down.
Maybe I'll videotape me testing my ISC so you guys can give your opinion.
I have an issue with the hot idle on my 96 Tracker. It will not regulate down to 800 steadily. It holds steadily at 1000 but then I adjust air bleed screw(closing it) and seems like ISC cannot control idle. I pinched top hose on ISC at 1000 rpm idle and engine nearly stalls, however unplugging the connector does not have the same effect (nearly stalling engine)
I already took off ISC and left it soaking overnight a couple times, checked it against the video of testing ISC on fixkick.com by applying direct 12 v to the ISC connector and see by eye how well it closes and hear how good it snaps. I thought by looking and hearing at the ISC action that it was okey but blowing through the hose with the ISC in my hand without 12v applied I think air leaks through too much.
I screwed in close the air bleed screw and measured depth with a caliper, it measured around 14mm. I then opened it back up to 50% (around 7mm) tried running the car like that and idle went really high and erratic, from 1400 to 2000 rpm up and down, up and down in a way that I could see tachometer needle swinging up and down up and down, not progressively going up or down.
Maybe I'll videotape me testing my ISC so you guys can give your opinion.
1996 Geo Tracker, CAMI, 16 valve, 5sp, 4x4, soft top, 2 door, no a/c