All sorts of problems with 95 Mustang GT
08-05-2008, 09:42 PM
#1
Thread Starter
Join Date: Aug 2008
Location:
Posts: 6
All sorts of problems with 95 Mustang GT
I am troubleshooting my friends 95 Mustang GT 5.0 which is giving her all sorts of problems. She told me she was driving on I81 at about 80 Mph when she heard a funny noise and the car started to vibrate and make a whining noise. The other problems have been going on for over a year now.
Main problems:
Pinging like crazy, shifting from first to third (seems to hit second but doesn’t stay) with a funny front to back bounce under soft acceleration, whine from torque converter while in park but worse in forward or reverse but only slow speeds, idles rough with high-low-high pattern and all of her gauges will intermittently max out then go to normal and odometer and trip meter stopped turning.
Replaced so far:
All 4 rear shocks, EGR valve, IAC, Air Charge sensor, fuel pump (was whining), Air filter, full tune up, BG induction service, BG trans flush.
Found:
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift; VRef is 6.68 volts, no codes with KOEO and KOER, cylinder balance test passed, vacuum gauge reads steady and reacts correctly to tests in all data. Idles great with spout connector disconnected and timing is dead on.
Anyone have any ideas?
Main problems:
Pinging like crazy, shifting from first to third (seems to hit second but doesn’t stay) with a funny front to back bounce under soft acceleration, whine from torque converter while in park but worse in forward or reverse but only slow speeds, idles rough with high-low-high pattern and all of her gauges will intermittently max out then go to normal and odometer and trip meter stopped turning.
Replaced so far:
All 4 rear shocks, EGR valve, IAC, Air Charge sensor, fuel pump (was whining), Air filter, full tune up, BG induction service, BG trans flush.
Found:
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift; VRef is 6.68 volts, no codes with KOEO and KOER, cylinder balance test passed, vacuum gauge reads steady and reacts correctly to tests in all data. Idles great with spout connector disconnected and timing is dead on.
Anyone have any ideas?
08-05-2008, 09:53 PM
#3
6th Gear Member
Join Date: Nov 2006
Location: Spfld, MA
Posts: 9,240
RE: All sorts of problems with 95 Mustang GT
well you know that you have tranny issues, so I'd say start with that. A bad torque converter could cause that. Best bet would be to pay the hours rate at a tranny shop for a diag.
08-05-2008, 09:58 PM
#4
5th Gear Member
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
RE: All sorts of problems with 95 Mustang GT
Pinging like crazy:
origional balancer and how many miles on car?
was timing adjusted to what?
trans and converter problems need to have some one experienced driving the car to figure it out for sure.
idles rough with high-low-high pattern:
EGR valve, IAC, Air Charge sensor (IAT), fuel pump (was whining), Air filter, full tune up
was the MAF cleaned?
new plugs, cap, rotor, wires i presume?
BG trans flush: very good stuff...but if the converter has trash in it, that machine wont get it out. if it has trash in it, its going to go in the trash. (BG fluids are the best imo)
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift... the tailshaft on the trans?
origional balancer and how many miles on car?
was timing adjusted to what?
trans and converter problems need to have some one experienced driving the car to figure it out for sure.
idles rough with high-low-high pattern:
EGR valve, IAC, Air Charge sensor (IAT), fuel pump (was whining), Air filter, full tune up
was the MAF cleaned?
new plugs, cap, rotor, wires i presume?
BG trans flush: very good stuff...but if the converter has trash in it, that machine wont get it out. if it has trash in it, its going to go in the trash. (BG fluids are the best imo)
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift... the tailshaft on the trans?
08-05-2008, 10:02 PM
#5
Thread Starter
Join Date: Aug 2008
Location:
Posts: 6
RE: All sorts of problems with 95 Mustang GT
The car is located in Woodbridge VA. What role does the V-Ref play with the sensors? Where does it originate from? Could all of the sensors be sending the wrong signals due to a voltage of 6.6 when it should be 5.0? According to the shop I was at today they said that 6.6 was very bad but they had no idea what would cause the voltage to go high. My friend has little to no money to put toward this so I'm chipping in where and when I can.
08-05-2008, 10:12 PM
#6
Thread Starter
Join Date: Aug 2008
Location:
Posts: 6
RE: All sorts of problems with 95 Mustang GT
The car had a balancer installed about 4 years ago @ 90,000 the odometer stopped @ 127,000. We checked the timing and it was at 10 deg. I had two people test drive the car and it didn't act up at all, just my luck. I forgot to list that I changed the MAF about a year ago just after I ruined the last one by over oiling a K&N air filter. Yes new plugs, wires 8.8mm, cap, rotor. The TPS is reading 1.02 volts. I read on another post that anything over 1 volt would cause idle problems, is this true?
08-05-2008, 10:47 PM
#7
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: All sorts of problems with 95 Mustang GT
ORIGINAL: Templeofdooom
I am troubleshooting my friends 95 Mustang GT 5.0 which is giving her all sorts of problems. She told me she was driving on I81 at about 80 Mph when she heard a funny noise and the car started to vibrate and make a whining noise. The other problems have been going on for over a year now.
Main problems:
Pinging like crazy, shifting from first to third (seems to hit second but doesn’t stay) with a funny front to back bounce under soft acceleration, whine from torque converter while in park but worse in forward or reverse but only slow speeds, idles rough with high-low-high pattern and all of her gauges will intermittently max out then go to normal and odometer and trip meter stopped turning.
Replaced so far:
All 4 rear shocks, EGR valve, IAC, Air Charge sensor, fuel pump (was whining), Air filter, full tune up, BG induction service, BG trans flush.
Found:
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift; VRef is 6.68 volts, no codes with KOEO and KOER, cylinder balance test passed, vacuum gauge reads steady and reacts correctly to tests in all data. Idles great with spout connector disconnected and timing is dead on.
Anyone have any ideas?
I am troubleshooting my friends 95 Mustang GT 5.0 which is giving her all sorts of problems. She told me she was driving on I81 at about 80 Mph when she heard a funny noise and the car started to vibrate and make a whining noise. The other problems have been going on for over a year now.
Main problems:
Pinging like crazy, shifting from first to third (seems to hit second but doesn’t stay) with a funny front to back bounce under soft acceleration, whine from torque converter while in park but worse in forward or reverse but only slow speeds, idles rough with high-low-high pattern and all of her gauges will intermittently max out then go to normal and odometer and trip meter stopped turning.
Replaced so far:
All 4 rear shocks, EGR valve, IAC, Air Charge sensor, fuel pump (was whining), Air filter, full tune up, BG induction service, BG trans flush.
Found:
Rear output shaft makes a terrible grumbling whine when car is revved up and on a lift; VRef is 6.68 volts, no codes with KOEO and KOER, cylinder balance test passed, vacuum gauge reads steady and reacts correctly to tests in all data. Idles great with spout connector disconnected and timing is dead on.
Anyone have any ideas?
and v-ref signal is supplied via ecm
08-06-2008, 07:36 AM
#9
5th Gear Member
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
RE: All sorts of problems with 95 Mustang GT
o one thing i forgot, the 94/95 auto's will act up of the motor isnt running right...
i found this out when i bought mine, i had a cracked head and a knock from it, the trans shifted like crap, i took it for a drive after i rebuilt the motor, no problems what so ever, i turned the timing up to high and blew a head gasket, guess what, thats trans started acting funny again. so that might be some of your problem. if i remember right, when i put the new cam in and had a hunting idle, the trans would clank after the shift and the car would kind of jump foward and back for a second.
i found this out when i bought mine, i had a cracked head and a knock from it, the trans shifted like crap, i took it for a drive after i rebuilt the motor, no problems what so ever, i turned the timing up to high and blew a head gasket, guess what, thats trans started acting funny again. so that might be some of your problem. if i remember right, when i put the new cam in and had a hunting idle, the trans would clank after the shift and the car would kind of jump foward and back for a second.
08-06-2008, 08:11 AM
#10
Banned
Join Date: Dec 2005
Location: Lil' Rhody
Posts: 22,376
RE: All sorts of problems with 95 Mustang GT
ORIGINAL: Templeofdooom
The car had a balancer installed about 4 years ago @ 90,000 the odometer stopped @ 127,000. We checked the timing and it was at 10 deg. I had two people test drive the car and it didn't act up at all, just my luck. I forgot to list that I changed the MAF about a year ago just after I ruined the last one by over oiling a K&N air filter. Yes new plugs, wires 8.8mm, cap, rotor. The TPS is reading 1.02 volts. I read on another post that anything over 1 volt would cause idle problems, is this true?
The car had a balancer installed about 4 years ago @ 90,000 the odometer stopped @ 127,000. We checked the timing and it was at 10 deg. I had two people test drive the car and it didn't act up at all, just my luck. I forgot to list that I changed the MAF about a year ago just after I ruined the last one by over oiling a K&N air filter. Yes new plugs, wires 8.8mm, cap, rotor. The TPS is reading 1.02 volts. I read on another post that anything over 1 volt would cause idle problems, is this true?
between .71 and .98 is the best range