Almarktool Posted October 30, 2010 Report Share Posted October 30, 2010 Hi guys I just purchased a 2007 Shelby GT ( white ) it had spent the last 3 years as a garage queen and it only has 800 miles on it , It was purcahsed sight unseen. 1) When i go from a dead stop to moving forward there is a thump thump sound coming from back left wheel ( it gets worse if u take of and make it seem like you popped the clutch and didn't give it any gas ) put car on lift everything seems tight, took wheel off looks ok, was there any problems with the gear and pinon in the rear in these cars maybe wheel bearings ? i don't have a shop manual yet so not really sure how to take apart and check ? it you take off very very slow there is no noise, and also no noise when moving or shifting gears because the play where ever it is has been taken up by moving forward already , must come to a stop to mkae it happen again were there any recalls on this? 2) when driving the car if you put the clutch in and you are doing like 25-45 miles per hours the shifter vibrates alot is this an adjustment or another problem ? Thanks for all and any help Mark Link to comment Share on other sites More sharing options...
07SGT0547 Posted October 30, 2010 Report Share Posted October 30, 2010 Mark, Welcome to the club And while I am not aware of any pinion problems with the SGT, there were known issues where the LEFT rear muffler brackets were banging against the frame... Was very difficult to track down, because it didn't exhibit the same symptoms all the time However, depending on your CSM# and when the car was built, that problem went away during the end of the 2007 model run... Turns out the early SGT-specific mufflers were being welding incorrectly from the supplier... Also the early Hurst shifters were known to vibrate at low speeds for no apparent reason... You can take off the shifter knob & boot and re-tighten the 2 bolts that hold the chrome stock to the shifter mechanism... Or if you look on-line, you can find a shifter rebuild kit, that seemed to do the trick for lots of people... And please make sure you take the time to register (or re-register) your SGT in the Shelby American Registry... There is a link below my signature as well as an e-mail address if you need any further help Gregg 07SGT0547 Link to comment Share on other sites More sharing options...
Almarktool Posted October 31, 2010 Author Report Share Posted October 31, 2010 Gregg, 07SGT1254 Did this have the crappy muffler ?? if so are my mufflers still under warrenty ? where would i go to get them under warrenty ? or do i have to just buy my own ? I guess i will need to obtain a service manual of some sort inorder to take the shift boot apart, any sugestions ? Chilton, Hayes ?? Thanks Mark Mark, Welcome to the club And while I am not aware of any pinion problems with the SGT, there were known issues where the LEFT rear muffler brackets were banging against the frame... Was very difficult to track down, because it didn't exhibit the same symptoms all the time However, depending on your CSM# and when the car was built, that problem went away during the end of the 2007 model run... Turns out the early SGT-specific mufflers were being welding incorrectly from the supplier... Also the early Hurst shifters were known to vibrate at low speeds for no apparent reason... You can take off the shifter knob & boot and re-tighten the 2 bolts that hold the chrome stock to the shifter mechanism... Or if you look on-line, you can find a shifter rebuild kit, that seemed to do the trick for lots of people... And please make sure you take the time to register (or re-register) your SGT in the Shelby American Registry... There is a link below my signature as well as an e-mail address if you need any further help Gregg 07SGT0547 Link to comment Share on other sites More sharing options...
Jer Posted October 31, 2010 Report Share Posted October 31, 2010 Gregg, 07SGT1254 Did this have the crappy muffler ?? if so are my mufflers still under warrenty ? where would i go to get them under warrenty ? or do i have to just buy my own ? I guess i will need to obtain a service manual of some sort inorder to take the shift boot apart, any sugestions ? Chilton, Hayes ?? Thanks Mark With a car that sat a while, there may be a TINY little chance of a caliper binding up... Jer Link to comment Share on other sites More sharing options...
07-2937 Posted October 31, 2010 Report Share Posted October 31, 2010 after you check the shifter bolts...pull up on the shifter is there any play in it? if it moves more than 1/8th it will be the cause of your rattle Link to comment Share on other sites More sharing options...
JeffIsHereToo Posted October 31, 2010 Report Share Posted October 31, 2010 Did this have the crappy muffler ?? if so are my mufflers still under warrenty ? where would i go to get them under warrenty ? or do i have to just buy my own ? Just get the car up on a lift and give the mufflers a shake and a light rap to each hanger. The warranty is 3 years from the date of first purchase so I doubt it's still under warranty but check all the same to be sure. Good luck! Link to comment Share on other sites More sharing options...
springer Posted October 31, 2010 Report Share Posted October 31, 2010 The console is removed very easy. Open the console lid and there are two bolts on the top rear to remove. Once removed, pull the emergency brake handle all the way up, then lift up the rear of the console. The front of the console snaps in, so make sure you get the front to snap out. Wiggle the console out thru the emergency brake handle. The removal is very simple. Next, remove shifter knob, then the dust boot cover pulls right off - it snaps in place so you might have to exert some muscle to pull it off. You can now check the shifter arm. Here is a video for a shifter install, which shows you how to remove the console. youtube.com/watch?v=xaH3h5C8sqc&feature=player_embedded Good luck. Link to comment Share on other sites More sharing options...
07SGT0547 Posted October 31, 2010 Report Share Posted October 31, 2010 Gregg, 07SGT1254 Did this have the crappy muffler ?? if so are my mufflers still under warrenty ? where would i go to get them under warrenty ? or do i have to just buy my own ? I guess i will need to obtain a service manual of some sort inorder to take the shift boot apart, any sugestions ? Chilton, Hayes ?? Thanks Mark Mark, Muffler(s) probably out of warranty (depending on date vehicle put into service)... But with less than 800 miles, if this is the problem, then a good exhaust shop "should" be able to remove any incorrect bracket and re-weld it into place... Unfortunately, I don't know of any "before & after" pictures from anyone who had this problem early on... So I can't show you exactly what to correct... But I would do what I can to keep your OEM Mufflers... And if you do an Internet Search for someone who has installed a Hurst Shifter in a regular Mustang GT (2005-2009) then you will have all the necessary steps and pictures you will need to work "backwards" and troubleshoot your shifter that is already installed... Good Luck! Gregg 07SGT0547 Link to comment Share on other sites More sharing options...
shel-b001 Posted October 31, 2010 Report Share Posted October 31, 2010 Are the mufflers breaking down inside? Link to comment Share on other sites More sharing options...
ARMORINE Posted October 31, 2010 Report Share Posted October 31, 2010 if i may. on the shifter i suggest you put the car on a lift and check the attachment bolts that bolt it to the transmission. mine were loose from the factory. it always felt alittle odd. when i changed the suspension i took 4 hours and went over almost every bolt on the car checking torque. the attachments on the trnasmission were lose and by loose i mean i could unscrew them with my fingers. make sure you check them when you get a chance this could affect you shifter and cause rattle. Link to comment Share on other sites More sharing options...
Almarktool Posted October 31, 2010 Author Report Share Posted October 31, 2010 Thanks everyone for your sugestions so far, i just loosened and try to rotate the one muffler a little in case it was tap the frame but can't tell till i drive it tomorrow, had car on lift today went over all the bolts in the rear suspension shocks etc allseamed good, i think those mufflers might just be a tad snug in there and if not perfect they could cause a rattle, good news is the orginal owner purchased the car new on augest 28 2008 so i have almost a full year of warrenty left on the car, what does everyone think about the muffler deletes ? or other after market mufflers that don't fit so snug in there ?> not really looking to make the car louder, if it gets a hair louder then thats ok. will work on the shifter tomorrow as well Mark if i may. on the shifter i suggest you put the car on a lift and check the attachment bolts that bolt it to the transmission. mine were loose from the factory. it always felt alittle odd. when i changed the suspension i took 4 hours and went over almost every bolt on the car checking torque. the attachments on the trnasmission were lose and by loose i mean i could unscrew them with my fingers. make sure you check them when you get a chance this could affect you shifter and cause rattle. Link to comment Share on other sites More sharing options...
shelbytexan Posted October 31, 2010 Report Share Posted October 31, 2010 Thanks everyone for your sugestions so far, i just loosened and try to rotate the one muffler a little in case it was tap the frame but can't tell till i drive it tomorrow, had car on lift today went over all the bolts in the rear suspension shocks etc allseamed good, i think those mufflers might just be a tad snug in there and if not perfect they could cause a rattle, good news is the orginal owner purchased the car new on augest 28 2008 so i have almost a full year of warrenty left on the car, what does everyone think about the muffler deletes ? or other after market mufflers that don't fit so snug in there ?> not really looking to make the car louder, if it gets a hair louder then thats ok. will work on the shifter tomorrow as well Mark I installed the KR mufflers on my car. The stock mufflers are more flat so as to take up more room than the round KR mufflers. The KR's are more loud ,but only to those listening from the outside of the car. There is no drone at any speed. Ford Racing had these at 499.00 shipped but i don't know the price now.The shifter is under warranty so you could get the dealer to contact the Shelby warranty dept. in Michigan and possibly get a new shifter as i did. There were many of our cars that had the shifter problem and had them replaced under warranty. The advice to lift up on the shiffter to see if there is any slack is correct. Good-Luck. Link to comment Share on other sites More sharing options...
07-2937 Posted October 31, 2010 Report Share Posted October 31, 2010 just a quick note the mufflers in question also had too long of hanger rods and the would sometimes hit the back of bumper support if thats so,, cut some off . You should be able to see if its hitting on top it will leave a mark. Link to comment Share on other sites More sharing options...
JeffIsHereToo Posted October 31, 2010 Report Share Posted October 31, 2010 Are the mufflers breaking down inside? Mine did...but it was a mummm and rasping sort of sound where a baffle had come loose. You could have one bouncing around so a rubber mallet around the muffler should get it to move. Link to comment Share on other sites More sharing options...
JeffIsHereToo Posted October 31, 2010 Report Share Posted October 31, 2010 just a quick note the mufflers in question also had too long of hanger rods and the would sometimes hit the back of bumper support if thats so,, cut some off . You should be able to see if its hitting on top it will leave a mark. +1 If you do a search for muffler and shifter you will find TONS AND TONS of threads with pictures and things to try. In every case there are more than a few possible reasons. It's been three years since most of us went through this stuff so I'm sure we've forgotten a few. Link to comment Share on other sites More sharing options...
COBRA SCOTTY Posted October 31, 2010 Report Share Posted October 31, 2010 HI Mark , if I may chime in ; someone mention earlier in your thread about your car sitting around and the possiblility of your rear brakes stcking and freezing up. I would look it to that as a probably cause if you are hearing a whoop , whoop kind of noise at slow speeds or when appling the brakes. When cars sit for extended periods of time the pistion caliper slides can freeze up or rust up and stay in a closed or clamp position on the rear rotors and will need to be removed lubricated and possible ajust open with a pistion tool. Otherwise the mufflers hitting the rear or bottom of the rear valence is also a possibliity unless it is a metal against metal sound. I guess the best thing you can also do is have a friend or the dealership mechanic stand outside the car as you start the car from a stand still and listen for the noise as you slowly drive by him. If you do not find an issues with the calipers frozen or binding on the rotors , you have no problem with the muffler hitting ; I would then tend to believe you have a binding clutch pack in your rear end differential which was a Technical Service Bulliten (TSB) on the Mustangs for the years 2007-2009 ; which can make a very similar noise to the one you are describing. I hope this helps , I believe it will get your problem solved. Scotty g. Ford Motor Engineer retired. Best of luck and enjoy you new car. Link to comment Share on other sites More sharing options...
jaydub Mach1 Posted October 31, 2010 Report Share Posted October 31, 2010 My $.02. Since you mentioned the car sat around as a garage queen, perhaps one or more of the tires is flat spotted?? Probably not likely, but just a thought..... Link to comment Share on other sites More sharing options...
Almarktool Posted October 31, 2010 Author Report Share Posted October 31, 2010 My $.02. Since you mentioned the car sat around as a garage queen, perhaps one or more of the tires is flat spotted?? Probably not likely, but just a thought..... Link to comment Share on other sites More sharing options...
Almarktool Posted October 31, 2010 Author Report Share Posted October 31, 2010 well looks like it got 90% better this morning, i loosened the muffler clamp and twisted the muffler a bit and it seems better, going to go with new axle backs , anyone have suggestions ? i don't want it and louder , but i want the smaller mufflers so they are no longer ina tight spot and hitting the frame which is the problem i have now i see alot of after market stuff borla etc etc ? keep in mind i will be doing a 550 SC this winter so I want them to be compatable Thank-you everyone for the tips and advice it has helped alot Mark Link to comment Share on other sites More sharing options...
07-2937 Posted October 31, 2010 Report Share Posted October 31, 2010 if its to get rid of the noise fix the problem... those are good mufflers with a good sound if u want a different sound,i KR mufflers are the besIMHO and then its a toss up on the no muffler (slp loudmouths) I have Borla and I like the deep throaty rumble. Link to comment Share on other sites More sharing options...
fatboy Posted July 30, 2011 Report Share Posted July 30, 2011 i had a muffler hanger break off from the weld. took it to a shop and got it rewelded. they did a better weld on it plus they added an extra piece to the hangers to strengthen it. and without even asking they redone the hanger welds on the other muffler even though it wasn't broke. these guys were older hands and not young kids. so they knew what they were doing. since they knew it was a quick fix they got me in ahead of other vehicles (i got there early in the morning anyway) and only 20 bucks plus tax. and they liked my Shelby Link to comment Share on other sites More sharing options...
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