Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Really bad clunking

Thread Tools
 
Search this Thread
 
Old 02-16-2008, 01:07 PM
  #1  
Senior Member
Thread Starter
 
83camaroMN's Avatar
 
Join Date: May 2006
Location: Minnesota
Posts: 581
Likes: 0
Received 0 Likes on 0 Posts
Car: 1998 Mustang
Engine: 3.8L V6
Transmission: Automatic with overdrive
Axle/Gears: 2.73:1 axle ratio
Really bad clunking

When I am driving my car some times it like jerks/kicks and it only seems to do this when it shifts out of gear the RPMs drop (bogs out), and when I put the petal to the floor it just sits there (RPMs don't move) and the rear of the car jerks back and forth there for jerking the whole car back and forth. I can kick it out but the second I let off the gas it does it all over again, also this is a on and off thing some days I don't have a problem. What could be causing this to happen?

I have mention this on the board before but never got much help. But what ever this is it is getting worse.
Old 02-16-2008, 05:20 PM
  #2  
Member
 
PROPHET69's Avatar
 
Join Date: Jul 2006
Location: Halifax, Canada
Posts: 168
Likes: 0
Received 1 Like on 1 Post
Car: Modified 1985 Z28
Engine: 355 Carbureted
Transmission: TH350 Turbo
Re: Really bad clunking

As a matter of a fact, I had a very similar issue with my POS 1998 ford Taurus last year. Once in a while when trying to shift from second to third, the car would jerk, shift, then keep jerking like hell, no matter how hard i pushed on the gas after the shift, the RPM would simply not move at all, the car would not accelerate, so i'd have to let go of the gas, let it downshift and try it again. It got worse and worse until the car could no longer pass third gear and rev over 3000 RPM. It seemed as if it was an issue with both the engine and the transmission. I got a junker for 400$, took the tranny, had it installed and it works just fine now. Not sure if my description matches what your car does but to me, sounded the same.
Old 02-16-2008, 06:05 PM
  #3  
Senior Member
Thread Starter
 
83camaroMN's Avatar
 
Join Date: May 2006
Location: Minnesota
Posts: 581
Likes: 0
Received 0 Likes on 0 Posts
Car: 1998 Mustang
Engine: 3.8L V6
Transmission: Automatic with overdrive
Axle/Gears: 2.73:1 axle ratio
Re: Really bad clunking

Originally Posted by PROPHET69
As a matter of a fact, I had a very similar issue with my POS 1998 ford Taurus last year. Once in a while when trying to shift from second to third, the car would jerk, shift, then keep jerking like hell, no matter how hard i pushed on the gas after the shift, the RPM would simply not move at all, the car would not accelerate, so i'd have to let go of the gas, let it downshift and try it again. It got worse and worse until the car could no longer pass third gear and rev over 3000 RPM. It seemed as if it was an issue with both the engine and the transmission. I got a junker for 400$, took the tranny, had it installed and it works just fine now. Not sure if my description matches what your car does but to me, sounded the same.
Thats exactly what it is doing every once in a while I can kick it out but every day I drive it it gets worse. So it was your trans that went bad?
also the clunking from mine seens to be coming from the rear end, and its done it since I bought the car but before it only seemed to to it when it was under load like going up hill or punching it I suppose all the abuse I gave that car made it worse LOL.

Last edited by 83camaroMN; 02-16-2008 at 06:13 PM.
Old 02-17-2008, 02:47 AM
  #4  
Member
 
PROPHET69's Avatar
 
Join Date: Jul 2006
Location: Halifax, Canada
Posts: 168
Likes: 0
Received 1 Like on 1 Post
Car: Modified 1985 Z28
Engine: 355 Carbureted
Transmission: TH350 Turbo
Re: Really bad clunking

Yeah, going uphill was really dirty, it would never shift going uphill and I'd lose a ton of speed so i'd have to make sure i was past that gear before going uphill.

I'd get the tranny checked or just find another one, whichever is cheaper.
Old 02-17-2008, 06:00 PM
  #5  
Senior Member

iTrader: (1)
 
84'Firebird's Avatar
 
Join Date: May 2006
Location: Minnesota
Posts: 577
Received 2 Likes on 1 Post
Car: 84' Trans Am
Engine: 5.0 H.O. L69
Transmission: 700R4
Axle/Gears: 3.73 Disc Brakes
Re: Really bad clunking

Would the yoke on the Axle cause this, i remember hearing that?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
F-body driver
Transmissions and Drivetrain
17
03-06-2023 11:44 AM
3rdgenkindagal
Aftermarket Vendor Review
25
10-21-2015 09:32 AM
gta892000
Electronics
1
09-16-2015 12:40 AM
ynk1121
Transmissions and Drivetrain
5
09-12-2015 12:27 AM
Ragtop Man
Transmissions and Drivetrain
2
09-12-2015 12:23 AM



Quick Reply: Really bad clunking



All times are GMT -5. The time now is 09:15 AM.