vibration

stang_guy_95 · 11-29-2002, 05:33 PM

Well, about a week ago I went to start my car and it started shaking viloently all of a sudden. At first I thought that it might have been something like plug wires or distributor but all that stuff seemed to be okay. Plus there there wasn't a loss of performance, just a really bad skahing.. Then I thought it might have been something out of balance so I took everything apart to get to the flywheel and clutch disc and they were fine. I know it's not the drive shaft because it vibrates when it's sitting at idle. I'm really stumped as to what it is. It vibrates the worst between idle and 2500 RPM's and smoothes out a little at higher RPM's. I know that it has to be somewhere between the tranny and engine because you can really feel it in the stick compared to the steering wheel. Also, when I tore the tranny flywheel and clutch out and put them back together, the car won't engage. I don't think that there is any power going to the starter. If you guys have any suggestions please let me know because I am stumped.

PKRWUD · 11-29-2002, 05:47 PM

Define: "won't engage"

Have you checked your motor mounts?

stang_guy_95 · 11-29-2002, 05:51 PM

I mean that nothing happens when I start the car. I turn the key and there isn't even a click. I'm guessing that there just isn't any power going to the starter or maybe it's got a bad connection. The battery is fine so that isn't the problem.

PKRWUD · 11-29-2002, 11:52 PM

Well, it sounds like you need to do some checking!

Good thing it's a long weekend!

Take care,
~Chris

Coupe50h · 11-30-2002, 12:38 AM

Well when you get the starter figured out, look down on the harmonic balancer and make sure it's not wobbling, or check closesly to see if it's bad, shut engine off of course.

MEDIK418 · 11-30-2002, 01:47 AM

I am thinking you nailed it on the head.

"Bob" (freind of the boy's) came dragging up last week in his 97 GT and it was vibrating to beat Hell. While I was staring at the engine in disbelief that it would visibly shake like that, I noticed a funny looking wobbly thing behind the crank pulley. THe outer ring had gone astray. 48 bucks and some pullage and it's as good as new.

stang_guy_95 · 11-30-2002, 02:59 PM

I got the starter working finally. After putting the tranny, flywheel, and clutch back in, it seems to be running just fine. However, I noticed a loss in performance. I don't think that I got the right exhaust bolted up good on the header because I hear some sound coming out of there. Do you think that's what would be causing the loss in performance?

stang_guy_95 · 12-01-2002, 01:37 AM

ok, the performance is up to normal again but that nasty vibration is still there. Someone mentioned to check and see if the harmonic balancer or crank pulley is wobbling. How much wobbling would be out of ordinary?

Coupe50h · 12-01-2002, 02:24 AM

im having vibration over 70 mph, but i think its the rear tires, anyway, your crank pulley should be turning almost perfect, visibly you can tell if the hb is bad, also you should check motor mounts/tranny mounts especially if it happens all the time with the engine running in neutral.

PKRWUD · 12-01-2002, 02:33 AM

Quote:

Originally posted by stang_guy_95
How much wobbling would be out of ordinary?

Any.

stang_guy_95 · 12-01-2002, 09:33 PM

It's definately the harmonic balancer. How hard is it to replace it and what tools will I need to fix it. I also read that I would want to replace the oil seal while I'm at it.
Thanks a bunch,
Jason

Coupe50h · 12-01-2002, 10:15 PM

you cant rent the puller from autozone, looks like a steering wheel puller, pull the crank pulley, loosen the crank snout bolt, dont forget there is a washer in there too, and go to work....let us know.

Coupe50h · 12-01-2002, 10:18 PM

oh yea, after removing the bolt and washer, you can put the bolt back in(minus the washer) so the puller does'nt damge the crank snout, it's easy job, i did mine in like an hour, had to pull my electric fan too, im thinking i want a better one like fluidamper or something, i just have an oem replacement for now.

stang_guy_95 · 12-05-2002, 03:29 PM

I got the new harmonic balancer put in and it's running great. Thanks for all the help guys!

11-29-2002, 05:33 PM	#1
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	vibration Well, about a week ago I went to start my car and it started shaking viloently all of a sudden. At first I thought that it might have been something like plug wires or distributor but all that stuff seemed to be okay. Plus there there wasn't a loss of performance, just a really bad skahing.. Then I thought it might have been something out of balance so I took everything apart to get to the flywheel and clutch disc and they were fine. I know it's not the drive shaft because it vibrates when it's sitting at idle. I'm really stumped as to what it is. It vibrates the worst between idle and 2500 RPM's and smoothes out a little at higher RPM's. I know that it has to be somewhere between the tranny and engine because you can really feel it in the stick compared to the steering wheel. Also, when I tore the tranny flywheel and clutch out and put them back together, the car won't engage. I don't think that there is any power going to the starter. If you guys have any suggestions please let me know because I am stumped.

11-29-2002, 05:47 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Define: "won't engage" Have you checked your motor mounts? __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-29-2002, 11:52 PM	#4
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Well, it sounds like you need to do some checking! Good thing it's a long weekend! Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

11-30-2002, 12:38 AM	#5
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Well when you get the starter figured out, look down on the harmonic balancer and make sure it's not wobbling, or check closesly to see if it's bad, shut engine off of course. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

11-30-2002, 01:47 AM	#6
MEDIK418 Registered Member Join Date: Mar 1999 Location: Amarillo, Texas, USA Posts: 780	I am thinking you nailed it on the head. "Bob" (freind of the boy's) came dragging up last week in his 97 GT and it was vibrating to beat Hell. While I was staring at the engine in disbelief that it would visibly shake like that, I noticed a funny looking wobbly thing behind the crank pulley. THe outer ring had gone astray. 48 bucks and some pullage and it's as good as new. __________________ 1986 four-eyed LX coupe, 358 Cleveland, Tremec TKO600/centerforce clutch, dish cut Probe forged pistons, comp cams hyd.roller cam, .579/.588@224/230, Edel.performer, 670 holley street avenger, CPR custom built long tubes, ported and polished 4bbl heads, manley valves, beehive springs, MSD peo-billet dist/MSD6AL, fluidamper, 5 lug conv. with 17x8 bullits there's more but it's still not finished yet. Oh, and the oldest boy is turning his 89 GT into a FFR cobra this next summer.

11-29-2002, 05:51 PM	#3
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	I mean that nothing happens when I start the car. I turn the key and there isn't even a click. I'm guessing that there just isn't any power going to the starter or maybe it's got a bad connection. The battery is fine so that isn't the problem.

11-30-2002, 02:59 PM	#7
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	I got the starter working finally. After putting the tranny, flywheel, and clutch back in, it seems to be running just fine. However, I noticed a loss in performance. I don't think that I got the right exhaust bolted up good on the header because I hear some sound coming out of there. Do you think that's what would be causing the loss in performance?

12-01-2002, 01:37 AM	#8
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	ok, the performance is up to normal again but that nasty vibration is still there. Someone mentioned to check and see if the harmonic balancer or crank pulley is wobbling. How much wobbling would be out of ordinary?

12-01-2002, 02:24 AM	#9
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	im having vibration over 70 mph, but i think its the rear tires, anyway, your crank pulley should be turning almost perfect, visibly you can tell if the hb is bad, also you should check motor mounts/tranny mounts especially if it happens all the time with the engine running in neutral. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

12-01-2002, 09:33 PM	#11
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	It's definately the harmonic balancer. How hard is it to replace it and what tools will I need to fix it. I also read that I would want to replace the oil seal while I'm at it. Thanks a bunch, Jason

12-01-2002, 10:15 PM	#12
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	you cant rent the puller from autozone, looks like a steering wheel puller, pull the crank pulley, loosen the crank snout bolt, dont forget there is a washer in there too, and go to work....let us know. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

12-01-2002, 10:18 PM	#13
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	oh yea, after removing the bolt and washer, you can put the bolt back in(minus the washer) so the puller does'nt damge the crank snout, it's easy job, i did mine in like an hour, had to pull my electric fan too, im thinking i want a better one like fluidamper or something, i just have an oem replacement for now. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

12-05-2002, 03:29 PM	#14
stang_guy_95 Registered Member Join Date: Jul 2002 Location: michigan Posts: 56	I got the new harmonic balancer put in and it's running great. Thanks for all the help guys!

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