popping under floorpan, what is it?

[cmb91LX]

Alright, here is the deal. I have recently purchased a 91 LX5liter and I have some woes. The one addressed in this thread is the fact that when i let out of the clutch and apply throttle, there is a noticeable pop under the driver side floor pan. It also seems to thump under there when I am turning a corner from a stop and applying throttle. I have a feeling the endlinks could be the culprit BUT, would it be the endlinks or actually some bushing making this popping noise. Has anyone else experienced this thump and if so please share your remedies.

 

[blkstangman88]

i had a somwhat same problem, mine was my passanger side motor mount was shot so when i gave the car gas the engine would lift and put the driveshaft in a funky possition making the u-joints pop, after i replaced the motor mount and new k-member with new nuts for the tranny it all stopped. if its a poping like a backfire, then your pipe could just be loose and all the pressure is leaking from there. just a thought.

 

[Legendary]

Also the ripping of the floor pan can make lots of noise when the car is twisting.

 

[cmb91LX]

Motor mounts are good/new, no exhaust leaks. It feels almost like a CV joint going out in a FWD car, the popping feels the same. Any other ideas?

 

[Stump1000]

what kinda wheels does your car have? Weld wheels are known for that, if they are doing that then they need to be tightened

 

[Stump1000]

it sounds more like a clicking sound though... like a cv joint almost

 

[Iowa91LX]

Have you checked out your tranny mount bushings? Check and make sure that all your mounts are tight and bushings are still in good shape.

 

[blkstangman88]

check the U-joint on the drive shaft, may be shot.

 

[91_4ourBanger]

im not sure how the undercarriage of your car looks like, but my friends 02 V6 had the same problem, it turned out his exhaust pipes were hitting against something. if you have a lift put your car on it, and have someone look under your car and start the car, if the pipes hit something, then you have to push the pipes back into place.

 

[Scorcher2005]

my car (91 gt) has the same problem, but only on the passenger side. I think it may have something to do w/ the suspension such as the spring isolators...