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86 turbo z won't idle??? #1188630 02/29/12 09:15 PM 02/29/12 09:15 PM
Joined: Mar 2003 Posts: 1,728 ST clair shores MI M moretoys OP top fuel
moretoys OP top fuel M Joined: Mar 2003 Posts: 1,728 ST clair shores MI	buddy just bought this car.clean- maintained car.did a timing belt as maintenance,a few days later in the colder weather,won't idle,just goes up- down,up down, stalls,nothing consistent.sometimes it's rich sometimes lean.It also has a hesitation. I've checked and repaired all the vacuum lines, t-body is clean,But I also installed a different one that I had with all sensor still attached.Used 2 full cans of carb cleaner,A vacuum leak does not show up.I know these also have problems with the map sensor and lines since they are so long and go on the logic module inside.I have a good reading on the scan tool.I also noticed that there is a reman power module next to the battery.Runs good and strong,just NO idle.I did the relearn, didn't help.timing is right on.belt is right. done hundreds of these.Egr valve seems to be closed.I do hear a slight exhaust leak.Can something in the turbo cause a problem?? I'm out of basic ideas. TURBO dodge forum was no help either.

Re: 86 turbo z won't idle??? [Re: moretoys] #1188631 02/29/12 10:57 PM 02/29/12 10:57 PM
Joined: Jan 2003 Posts: 1,411 Tallmadge, Ohio P Paul_B pro stock
Paul_B pro stock P Joined: Jan 2003 Posts: 1,411 Tallmadge, Ohio	I had an 87 Daytona which ran great at engine speeds of 2000RPM or higher when cold. After warmup, it would run at lower speeds, but wouldn't idle. Turned out it was the coolant temperature sensor right by the thermostat. I didn't get any codes.

Re: 86 turbo z won't idle??? [Re: Paul_B] #1188632 03/01/12 12:05 AM 03/01/12 12:05 AM
Joined: Apr 2011 Posts: 450 owensboro, ky rallye73 mopar
rallye73 mopar Joined: Apr 2011 Posts: 450 owensboro, ky	What have you got the timing set at? I used to own an 87 Shelby Z. Best I remember the timing needs to be 12 degrees advanced for it to run right. I never fooled much with the turboI motors though. I would definately check the coolant sensor if everything else checks out.

Re: 86 turbo z won't idle??? [Re: Paul_B] #1188633 03/01/12 02:29 AM 03/01/12 02:29 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Check the fuel pressure? If fuel pressure is off, the idle motor may be going up and down to try to correct? Also had one where the map sensor hose fell off, but you said you checked that already. Will it idle fine with the coolant temp sensor unplugged? Hope it does because that's how you're supposed to set the ignition timing.

Re: 86 turbo z won't idle??? [Re: DaytonaTurbo] #1188634 03/01/12 02:33 AM 03/01/12 02:33 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Hey... This ISN'T a Datsun website!

Re: 86 turbo z won't idle??? [Re: moretoys] #1188635 03/01/12 02:47 AM 03/01/12 02:47 AM
Joined: Jul 2011 Posts: 817 Eugene, Oregon Secret Chimp super stock
Secret Chimp super stock Joined: Jul 2011 Posts: 817 Eugene, Oregon	Quote: buddy just bought this car.clean- maintained car.did a timing belt as maintenance,a few days later in the colder weather,won't idle,just goes up- down,up down, stalls,nothing consistent.sometimes it's rich sometimes lean.It also has a hesitation. I've checked and repaired all the vacuum lines, t-body is clean,But I also installed a different one that I had with all sensor still attached.Used 2 full cans of carb cleaner,A vacuum leak does not show up.I know these also have problems with the map sensor and lines since they are so long and go on the logic module inside.I have a good reading on the scan tool.I also noticed that there is a reman power module next to the battery.Runs good and strong,just NO idle.I did the relearn, didn't help.timing is right on.belt is right. done hundreds of these.Egr valve seems to be closed.I do hear a slight exhaust leak.Can something in the turbo cause a problem?? I'm out of basic ideas. TURBO dodge forum was no help either. I don't know if this thing has an idle air control valve, but if it does you need to look at it. If it's sticking or just blown to crap you will never get a consistent idle. 1967 Dodge Coronet Deluxe station wagon 1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s

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