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  '79 to '93 -- The Fox Mustang & Capri
  supercharger idle problem.

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Author Topic:   supercharger idle problem.
1980-2capristang
Journeyman

Posts: 49
From: cleveland ohio usa
Registered: Jul 2000

posted 04-26-2001 02:42 AM     Click Here to See the Profile for 1980-2capristang     Edit/Delete Message   Reply w/Quote
hey i was wondering if anyone has any ideas on how to get my car idleing right with the blower. the problems im haveing is at idle (any where below 1400-1500rpm's) it surges.. like when i had it set to 750rpms for idle it would surge upto 1100 and down to as low as 200 and back up to 1100 till it would stall... so i set the idle up to 1450 it still surges a lil but like only a 100-200 rpm difrence. but i want that badass idle of like 800rpm or less (depending on where my alt stops chargeing.) anyone have any idea's on what my problem could be? i was thinking it mite be the ecu's program since it was a prototype ecu (the only one i could get my hands on) all parts are new. all new fi all new sencors new mass... new o2's new fuel injectors. #24. new icu new cap new rotor. the only parts that has to do with the motor and how it runs that i didnt replace with a new part is the fuel pump and ignition coil. but that seems to be working fine for now. so has anyone ever had this problem b4?

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I HAVE A MUT! 1980 capri with 92 stang 5.0 body panles and 88 5.0 ho motor with 93 cobra fuel injection upper and lower intake and 93 cobra ecu. and much much more.

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SteveLaRiviere
Administrator

Posts: 14659
From: Saco, Maine MCA # 47773
Registered: May 99

posted 05-19-2001 08:29 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Have you checked the voltage at the TPS?

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'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC {Wife's car...}
All Fords since 1977

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RESTOMAN
Journeyman

Posts: 20
From: HUNTINGDON VALLEY, PA.
Registered: Mar 2001

posted 06-11-2001 05:15 PM     Click Here to See the Profile for RESTOMAN   Click Here to Email RESTOMAN     Edit/Delete Message   Reply w/Quote
HOW IS YOUR COMPUTER CALIBRATED?
WHAT TYPE OF BLOWER ARE YOU USING?
DOES THE CAR HAVE A MAF SENSOR?

WRITE BACK WITH SOME MORE SPECS ON THE ENGINE
CAM,HEADS,ETC.

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1969 TORINO COBRA 428SCJ
1989 MUSTANG 347 STROKER
2001 HARLEY DAVIDSON F150

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1980-2capristang
Journeyman

Posts: 49
From: cleveland ohio usa
Registered: Jul 2000

posted 06-26-2001 01:07 PM     Click Here to See the Profile for 1980-2capristang     Edit/Delete Message   Reply w/Quote
i found out the problem. somehow the blower messed up my idle air valve. it started getting real bad. jumping up as high as 3000rpm. i just unpluged the idle air valve and put a block off plate on it and set my idle at 950rpm's and it works grate now... btw i run a yyy block with gt40 heads e303 cam 1.72 roller rockers. high flow oil pump. full length bbk headers. 2 1/2 inch off road bbk h-pipe. flow master mufflers. ported cobra upper and lower intake. 70mm tb 75mm mass air (pro-M) and 24# injectors... hmm i think that last mod is the powerdyne bd-11a with a 11lbs pully (runs upto 12psi but only at 6500-7000rpm's) and a k&n cone.. i hope i didnt miss anything. well thats my setup.

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I HAVE A MUT! 1980 capri with 92 stang 5.0 body panles and 88 5.0 ho motor with 93 cobra fuel injection upper and lower intake and 93 cobra ecu. and much much more.

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