88GT Conv - Whine noise on acceleration, whats it mean?

Andyb · 02-06-2001, 10:34 PM

Hi guys

I bought my 88gt conv recently and have been driving it for about 6k miles now. Its a 5 spd. Whenever I accelerate theres a really loud awkward sounding whine. It happens in 1st 2nd 3rd maybe 4th I dont recall but not in 5th for sure. Whats this whine mean? It only happens when I am accelerating. If I take my foot off the gas pedal it goes away.

Any advice/information would be appreciated! Thanks!

Andy

vkaro45 · 02-06-2001, 10:43 PM

Could be several things, input shaft bearing, pilot shaft bearing, internal trans bearings. Does it do it at idle? with the clutch in? only with the clutch out? I had an input shaft bearing go bad, it would whine only when the clutch was out.

------------------
'89 GT work in progress
'66 289 coupe even more work

dinomite · 02-06-2001, 10:44 PM

it doesn't do it at all if you just rev?

Andyb · 02-07-2001, 12:42 AM

The clutch has to be out and I have to have my foot on the gas, otherwise there is absolutely no whine. Happens in gears 1-4. I can jam the clutch in and it stops.

Andy

90dpscoupe · 02-07-2001, 01:10 AM

Dude i been posting about this forever, basicaly what everyone says is correct, mine whines through all grs except 4th, so i come to the conclusion i better buy a rebuild kit 150$, and prepare, becuse usualy it's about to go south.

Especialy if your hard on it, which i have some hard dragstrip runs on mine, but my t-5 shifts good throughout grs,

but an input shaft gets play in it, and my t-5 gives a "howling" noise when im decelerating to a stop?, it's very 'annoying' so lemme no what it was, if you ever fix it. good luck

------------------
90 lx coupe: Mac cold air fenderwell, accel supercoil,advncd ignition,3-core radiatr, FMS alum D/S, Black magic fan, 3.27grs, 3chbr flows.
Best time: 13.9116(on 225/60/15 firehawks)
Best mph: 97.80
Best 60': 2.0047

next mods: subframes, mac h-pipe

withamc · 02-07-2001, 01:55 AM

Mine had a whine in it on acceleration and deceleration. When I had the gears changed, I had the axle bearings replaced as well and the noise disappeared. Could be the rear end.

------------------
86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

90dpscoupe · 02-07-2001, 02:29 AM

Thats a good point withamc, my dad thinks it's the rearend, but how come it dont whine in 4th? well im gonna try and have them replaced, i see a little oil on the pass side axle, so maybe my bearings are shot?

------------------
90 lx coupe: Mac cold air fenderwell, accel supercoil,advncd ignition,3-core radiatr, FMS alum D/S, Black magic fan, 3.27grs, 3chbr flows.
Best time: 13.9116(on 225/60/15 firehawks)
Best mph: 97.80
Best 60': 2.0047

next mods: subframes, mac h-pipe

02-06-2001, 10:34 PM	#1
Andyb Registered Member Join Date: Aug 2000 Location: Mesa Az Usa Posts: 19	88GT Conv - Whine noise on acceleration, whats it mean? Hi guys I bought my 88gt conv recently and have been driving it for about 6k miles now. Its a 5 spd. Whenever I accelerate theres a really loud awkward sounding whine. It happens in 1st 2nd 3rd maybe 4th I dont recall but not in 5th for sure. Whats this whine mean? It only happens when I am accelerating. If I take my foot off the gas pedal it goes away. Any advice/information would be appreciated! Thanks! Andy

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02-06-2001, 10:43 PM	#2
vkaro45 Registered Member Join Date: Jul 2000 Location: Stafford, VA Posts: 54	Could be several things, input shaft bearing, pilot shaft bearing, internal trans bearings. Does it do it at idle? with the clutch in? only with the clutch out? I had an input shaft bearing go bad, it would whine only when the clutch was out. ------------------ '89 GT work in progress '66 289 coupe even more work

02-06-2001, 10:44 PM	#3
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	it doesn't do it at all if you just rev?

02-07-2001, 12:42 AM	#4
Andyb Registered Member Join Date: Aug 2000 Location: Mesa Az Usa Posts: 19	The clutch has to be out and I have to have my foot on the gas, otherwise there is absolutely no whine. Happens in gears 1-4. I can jam the clutch in and it stops. Andy

02-07-2001, 01:10 AM	#5
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	Dude i been posting about this forever, basicaly what everyone says is correct, mine whines through all grs except 4th, so i come to the conclusion i better buy a rebuild kit 150$, and prepare, becuse usualy it's about to go south. Especialy if your hard on it, which i have some hard dragstrip runs on mine, but my t-5 shifts good throughout grs, but an input shaft gets play in it, and my t-5 gives a "howling" noise when im decelerating to a stop?, it's very 'annoying' so lemme no what it was, if you ever fix it. good luck ------------------ 90 lx coupe: Mac cold air fenderwell, accel supercoil,advncd ignition,3-core radiatr, FMS alum D/S, Black magic fan, 3.27grs, 3chbr flows. Best time: 13.9116(on 225/60/15 firehawks) Best mph: 97.80 Best 60': 2.0047 next mods: subframes, mac h-pipe

02-07-2001, 01:55 AM	#6
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Mine had a whine in it on acceleration and deceleration. When I had the gears changed, I had the axle bearings replaced as well and the noise disappeared. Could be the rear end. ------------------ 86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

02-07-2001, 02:29 AM	#7
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	Thats a good point withamc, my dad thinks it's the rearend, but how come it dont whine in 4th? well im gonna try and have them replaced, i see a little oil on the pass side axle, so maybe my bearings are shot? ------------------ 90 lx coupe: Mac cold air fenderwell, accel supercoil,advncd ignition,3-core radiatr, FMS alum D/S, Black magic fan, 3.27grs, 3chbr flows. Best time: 13.9116(on 225/60/15 firehawks) Best mph: 97.80 Best 60': 2.0047 next mods: subframes, mac h-pipe