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#1
10-09-2006, 02:49 PM
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Another Rough Idle Thread
Hey guys, I searched the site hopefully I didn't overlook a thread with the same exact problem. I just rebuilt the engine in my 91 Stealth R/T NA and I start her up and it sounds like my timing is HORRIBLE, and then she stalls. I put in Stage II cams, and a forged crank would that matter for my timing? I messed with the CAS and idle adjustments and such but to no avail. Any ideas?? It starts and wants to die, if I pump the gas it will rev high and then start to die again. I have tried adjust the Idle Screw that is recessed into the throttle body (not the fixed screw). I have checked my vacuum lines, it is driving me crazy. Also the honeycomb type stuff (don't know the name) inside my Mass Air Flow Sensor is gutted, it was bent up so I finished the job, but it ran fine after I did that, but is that stuff useful or unimportant? any ideas would help. Thanks
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 1991 Dodge Stealth R/T NA ATX Dual Exaust w/12" Glass Packs2002 Ford Ranger XLT Ext Cab 3.0 V6 
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#2
10-09-2006, 03:34 PM
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Re: Another Rough Idle Thread
Stepper motor, ECU, Spark plugs, Timing??? I would try cleaning/replacing the stepper motor first, then check the ecu for any leaks, etc....................
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#3
10-10-2006, 02:06 PM
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Re: Another Rough Idle Thread
Where can I find info on cleaning the stepper motor, do you have a link? Also, do I have to "realign" it or anything, never messed with the stepper motor before
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1991 Dodge Stealth R/T NA ATX Dual Exaust w/12" Glass Packs2002 Ford Ranger XLT Ext Cab 3.0 V6
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#4
10-10-2006, 02:49 PM
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Re: Another Rough Idle Thread
__________________
93 3000GT base K&N | long tube headers | 3sx crank pulley| testpipe | Addco front/rear sway bars (3SX) | rear strut bar & front 3-point strut bar (by JonVr4 on 3Si) | solid motor mounts | LSD insert | KYB GR-2 struts | intrax springs | adj. control arms | ss brake lines | 16% taller 5th gear (teamrip.com) | H4 conversion | push-button start | datalogger | HKS S-AFR | PLX WB O2 coming soon: adj. cam gears | bi-xenon HID retrofit
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#5
10-10-2006, 02:55 PM
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Re: Another Rough Idle Thread
Thanks Linebckr I appriciate it
Quote:
__________________
1991 Dodge Stealth R/T NA ATX Dual Exaust w/12" Glass Packs2002 Ford Ranger XLT Ext Cab 3.0 V6
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#6
10-10-2006, 03:21 PM
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Re: Another Rough Idle Thread
yes, he's talking about leaking capacitors.
__________________
93 3000GT base K&N | long tube headers | 3sx crank pulley| testpipe | Addco front/rear sway bars (3SX) | rear strut bar & front 3-point strut bar (by JonVr4 on 3Si) | solid motor mounts | LSD insert | KYB GR-2 struts | intrax springs | adj. control arms | ss brake lines | 16% taller 5th gear (teamrip.com) | H4 conversion | push-button start | datalogger | HKS S-AFR | PLX WB O2 coming soon: adj. cam gears | bi-xenon HID retrofit
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#7
10-12-2006, 10:53 AM
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Re: Another Rough Idle Thread
Have you checked the timing? Are you getting any Check engine lights? Gutted MAS are fickle. Some people have no problems with them, others have major idling issues with them...so borrowing and swapping in a non-gutted one wouldn't hurt (DSMs have identical MAS just fyi) just to see if that is the problem. IAC as mentioned above, ecu caps...possibly. Pressure test the intake, a blown-off or cracked intercooler pipe could cause that. Just recheck the obvious stuff.
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96 3000gt vr4 -K&N FIPK -Proboost mbc -Cusco front + rear strut bars -Greddy type-s -ATR downpipe -no cats -15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly. Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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