Mustang Guys - I am Stumped!! Need your help - TriStateTuners.com :: Home of Tristate Auto Enthusiast

ImportDPS · 11-13-2008, 08:46 PM

TST I am fking stumped. My dad has an 87 Mustang GT 5.0L. Now, if this was a Nissan or Honda I would have fixed it in a couple minutes. I dont know anything about this car, let alone want to know.

Anyways.

Car when its cold is fine. After it warms up, it starts almost hiccuping. It wont stop doing it at all and if you floor it the problem becomes worse. I personally remember the car doing it here and there but he says it was when he put the BBK Intake on it.

Car has...
Flowmaster Catback
Edelbrock Headers
ACT Clutch
BBK Intake
Professional Products 75MM TB with EGR Plate.

Dont know why this thing is doing this. Is there a way I can check codes etc?

SilverStang · 11-13-2008, 08:48 PM

you can check codes if your check engine light is on

240sxDann · 11-13-2008, 09:03 PM

Is it knocking or anything like that? Has he tried putting the stock intake on to see if it stops? Are all the connections tight, no vacuum leaks? He has a MAP set up, so it can't be anything w/ the MAF. Is it throwing a check engine light? Have you tried running higher octane?

OMGz Turbo · 11-13-2008, 09:11 PM

Check around the throttle body??

240sxDann · 11-13-2008, 09:15 PM

Oh and if it has a check engine light, under the hood, on the driver side, near the back of the engine bay, theres a big and a small plug. Those are what you connect the OBDI reader to.

Little Kev · 11-13-2008, 09:34 PM

when you say bbk intake do you mean upper and lower or just the cold air setup? is it still speed density or converted to mass air? does it start hard after its warmed up and shut off? could be a timing problem or the ign module may be on its way out or the distributor could have a problem

Maverick · 11-14-2008, 01:54 AM

take off the BBK throttle body and clean the area around the T/B and the plenum for oil buildup. check to make sure that all bolts are snugged and there are no leaks around the BBK T/B. make sure all wires and all other connections are fastened and where they are suppose to be.

disconnect the battery for up to 20 min and allow the ECU and all the parameters to reset and relearn itself, especially for the T/B itself.

Erik · 11-14-2008, 10:51 AM

sounds like a vacuum leak causing an fluctuating loop. Check all your hoses. if you can, seafoom is pretty good for finding those leaks, that or if you can get a can or tank of propain, spray that around your hoses. If you come across an area where you spray and the idle evens out, you found your vacuum leak.

MisfitKim · 11-14-2008, 03:02 PM

if its spurting you might just need to give the old girl a tune up, My 1990 was doing that and a tune up stopped that.

lownslow95 · 11-14-2008, 03:28 PM

Quote:

Originally Posted by MisfitKim

if its spurting you might just need to give the old girl a tune up, My 1990 was doing that and a tune up stopped that.

Or a clogged fuel filter, which in return, is considered part of a tune up.

Gregory · 11-14-2008, 04:01 PM

If it started with the intake, that points towards a vacuum leak. If it's just coincidence, I'd maybe do plugs, wires, ect.

OMGz Turbo · 11-14-2008, 04:14 PM

If you cant figure it out, bring it to the "toy shop" and we will get it running 100 percent...Maybe bring your pop's ill show him what a 92 notch with 600+RWHP feels like haha

Ciotti · 11-14-2008, 04:22 PM

My 87' did the same thing at one point, it turned out to be electrical, check the plugs, wires, and distributor it should be one of the three.

ThePrimerSuspect · 11-14-2008, 04:22 PM

if he did upper and lower check ignition timing. there is a plug you have to disconnect to put it in base timing. i ran into alot of problems where people tried to set timing with the plug still attached. other than that theres a slim chance of a vac leak. if it was a vac leak the idle would be super high. mine had the smallest vacuum leak under the upper intake and it was idling close to 2k all the time. also mass air or speed density? i cant remember what year they switched to MAF

11-13-2008, 08:46 PM	#1
ImportDPS Tri-State Addict Join Date: Mar 2007 Location: Philadelphia Member #3900 My Ride: 2007 Civic Si, 2008 Acura RDX, 1998 Civic Hatch GSR-T, 1993 Civic Hatch K-Series coming iTrader: (0)	Mustang Guys - I am Stumped!! Need your help TST I am fking stumped. My dad has an 87 Mustang GT 5.0L. Now, if this was a Nissan or Honda I would have fixed it in a couple minutes. I dont know anything about this car, let alone want to know. Anyways. Car when its cold is fine. After it warms up, it starts almost hiccuping. It wont stop doing it at all and if you floor it the problem becomes worse. I personally remember the car doing it here and there but he says it was when he put the BBK Intake on it. Car has... Flowmaster Catback Edelbrock Headers ACT Clutch BBK Intake Professional Products 75MM TB with EGR Plate. Dont know why this thing is doing this. Is there a way I can check codes etc?

11-13-2008, 09:11 PM	#4
OMGz Turbo Tri-State Post Whore Join Date: Dec 2006 Location: Ltown Member #3108 My Ride: 01' WS6..That whistles...01' Explorer 5.slow iTrader: (0)	Check around the throttle body?? __________________ loading HATERS.....99% ████████████████] NO ONE CARES ABOUT BEING TTT APPROVED

11-14-2008, 10:51 AM	#8
Erik Tri-State Post Whore Join Date: May 2006 Location: Glenside, PA Member #1962 My Ride: 2001 Audi A6 2.7 Twin Turbo iTrader: (4)	sounds like a vacuum leak causing an fluctuating loop. Check all your hoses. if you can, seafoom is pretty good for finding those leaks, that or if you can get a can or tank of propain, spray that around your hoses. If you come across an area where you spray and the idle evens out, you found your vacuum leak. __________________ --Eric '96 Mazda Miata \| FM V-Maxx Coilovers \| Jackson Racing Exhaust/Intake GONE To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. 01' Audi A6 2.7 Twin Turbo \| Daily \| NoMods

11-14-2008, 03:02 PM	#9
MisfitKim Tri-State Addict Join Date: Aug 2008 Location: Sin City Member #8550 My Ride: 1997 Ford Mustang iTrader: (0)	if its spurting you might just need to give the old girl a tune up, My 1990 was doing that and a tune up stopped that. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. "Honestly what he told her about cars, could have been read off the back of a tampon box"

11-14-2008, 04:01 PM	#11
Gregory Tri-State Addict Join Date: Feb 2006 Member #1461 My Ride: 1998 Mitsubish Eclipse GS-T, 1999 Jeep Grand Cherokee iTrader: (0)	If it started with the intake, that points towards a vacuum leak. If it's just coincidence, I'd maybe do plugs, wires, ect. __________________ ~2gb Mitsubishi Eclipse GS-T ~WJ Jeep Grand Cherokee

11-13-2008, 08:48 PM	#2
SilverStang Tri-State Aficionado Join Date: Jun 2008 Location: Perkasie Member #7987 My Ride: 07 chevy cobalt ss s/c iTrader: (0)	you can check codes if your check engine light is on

11-13-2008, 09:34 PM	#6
Little Kev Tri-State Training Wheels Join Date: Dec 2007 Location: West Deptford, Nj Member #6401 My Ride: 93 Mustang -- 08 GSXR 750 -- 01 Passat DD iTrader: (0)	when you say bbk intake do you mean upper and lower or just the cold air setup? is it still speed density or converted to mass air? does it start hard after its warmed up and shut off? could be a timing problem or the ign module may be on its way out or the distributor could have a problem

11-14-2008, 01:54 AM	#7
Maverick Tri-State Training Wheels Join Date: Oct 2008 Member #9861 My Ride: 2005 Ford Mustang GT iTrader: (0)	take off the BBK throttle body and clean the area around the T/B and the plenum for oil buildup. check to make sure that all bolts are snugged and there are no leaks around the BBK T/B. make sure all wires and all other connections are fastened and where they are suppose to be. disconnect the battery for up to 20 min and allow the ECU and all the parameters to reset and relearn itself, especially for the T/B itself.

11-14-2008, 04:14 PM	#12
OMGz Turbo Tri-State Post Whore Join Date: Dec 2006 Location: Ltown Member #3108 My Ride: 01' WS6..That whistles...01' Explorer 5.slow iTrader: (0)	If you cant figure it out, bring it to the "toy shop" and we will get it running 100 percent...Maybe bring your pop's ill show him what a 92 notch with 600+RWHP feels like haha __________________ loading HATERS.....99% ████████████████] NO ONE CARES ABOUT BEING TTT APPROVED

11-14-2008, 04:22 PM	#13
Ciotti Tri-State Post Whore Join Date: Jul 2008 Location: is everything (Cherry Hill) Member #8225 My Ride: 96' Cobra Vert iTrader: (0)	My 87' did the same thing at one point, it turned out to be electrical, check the plugs, wires, and distributor it should be one of the three. __________________ Ciotti Industries: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. 8 reps for your driver mod muscles To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. When something has foibles and won't handle perfectly, that gives it a particularly human quality as it makes mistakes. That's how we can build a relationship with a car that other people just won't get - Jeremy Clarkson

11-14-2008, 04:22 PM	#14
ThePrimerSuspect Tri-State Addict Join Date: Jan 2006 Location: philly Member #1241 iTrader: (0)	if he did upper and lower check ignition timing. there is a plug you have to disconnect to put it in base timing. i ran into alot of problems where people tried to set timing with the plug still attached. other than that theres a slim chance of a vac leak. if it was a vac leak the idle would be super high. mine had the smallest vacuum leak under the upper intake and it was idling close to 2k all the time. also mass air or speed density? i cant remember what year they switched to MAF

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