1994 C4 bushing question
Thread Starter
Racer
Joined: Aug 2015
Posts: 329
Likes: 23
From: douglasville georgia
1994 C4 bushing question
I tried the search function but did not find the help I need.
I just had the trans fluid changed in my ZF6 trans and I had the shop mechanic take a look at the rear suspension and drive shafts. The car shakes above 70mph and under hard acceleration.
He told me the U-joints are fine, the underside of the car is clean and everything seems to be in good shape. He did mention that I have a sliver of fiberglass broke off my rear spring on the passenger side of the car.
He drove the car and he felt torque steering under hard acceleration and the shake at 70mph. He thinks its worn bushings allowing the rear end to shift.
Can I buy a complete bushing kit for the C4 and where would I get it?
I just had the trans fluid changed in my ZF6 trans and I had the shop mechanic take a look at the rear suspension and drive shafts. The car shakes above 70mph and under hard acceleration.
He told me the U-joints are fine, the underside of the car is clean and everything seems to be in good shape. He did mention that I have a sliver of fiberglass broke off my rear spring on the passenger side of the car.
He drove the car and he felt torque steering under hard acceleration and the shake at 70mph. He thinks its worn bushings allowing the rear end to shift.
Can I buy a complete bushing kit for the C4 and where would I get it?
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
Before you start throwing parts at it, make sure what the actual problem is. The comments about the rear spring might be a clue.
You can get bushings from Energy or Prothane, if you need them. No point buying the whole kit if you only need partial.
You can get bushings from Energy or Prothane, if you need them. No point buying the whole kit if you only need partial.
Thread Starter
Racer
Joined: Aug 2015
Posts: 329
Likes: 23
From: douglasville georgia
I get your point about only buying the bushings that need replacing. I am the type of person that can't do that. I can't leave half the old worn rubber bushings under the car with new Urethane bushing mixed in. Same goes for front and rear bushings. If I add Urethane bushings to the rear suspension then I will replace all that I can and I'll replace the front as well.
I did a Google search and found Amazon to be the cheapest place to buy a complete Prothane bushing kit for $154.00 shipped. It looks like its going to take a while to replace all of them.
I think I will add a drain plug to the rear diff while I'm under there.
I did a Google search and found Amazon to be the cheapest place to buy a complete Prothane bushing kit for $154.00 shipped. It looks like its going to take a while to replace all of them.
I think I will add a drain plug to the rear diff while I'm under there.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I just did this. After I finished I realized that, according to the owner's manual, the change interval is 100K miles. I will never hit that mark (again, already passed it once), so I wondered why I put the drain in. Seemed like a good idea, though.
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
I get your point about only buying the bushings that need replacing. I am the type of person that can't do that. I can't leave half the old worn rubber bushings under the car with new Urethane bushing mixed in. Same goes for front and rear bushings. If I add Urethane bushings to the rear suspension then I will replace all that I can and I'll replace the front as well.
I did a Google search and found Amazon to be the cheapest place to buy a complete Prothane bushing kit for $154.00 shipped. It looks like its going to take a while to replace all of them.
I did a Google search and found Amazon to be the cheapest place to buy a complete Prothane bushing kit for $154.00 shipped. It looks like its going to take a while to replace all of them.
Do a close inspection of that rear spring for any cracking or delamination. You might need a new spring too.
Thread Starter
Racer
Joined: Aug 2015
Posts: 329
Likes: 23
From: douglasville georgia
A friend of mine said I can bring my car to his house and put it on his lift to change the bushings. He knows how to change them and has a press to assist in making it easier. I am going to change the diff fluid when I drop the rear out of the car. I'll probably change the U-joints as well. Now I need to decide between red or black bushings.
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Thread Starter
Racer
Joined: Aug 2015
Posts: 329
Likes: 23
From: douglasville georgia
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
Bushing sizes vary depending on where they are used. the instructions will guide you.
I had a rear spring crack, tho it was worse than a sliver. I'm not sure I'd want to drive a performance car with a flawed spring! I happen to have two here, as it goes. One is coded RHZ, the other NYR, both way cheaper than the big guys.
I'd opt for graphite-infused poly for my next set. Currently, I lube the sway bar bushings at every oil change..
I had a rear spring crack, tho it was worse than a sliver. I'm not sure I'd want to drive a performance car with a flawed spring! I happen to have two here, as it goes. One is coded RHZ, the other NYR, both way cheaper than the big guys.
I'd opt for graphite-infused poly for my next set. Currently, I lube the sway bar bushings at every oil change..
Thread Starter
Racer
Joined: Aug 2015
Posts: 329
Likes: 23
From: douglasville georgia
Bushing sizes vary depending on where they are used. the instructions will guide you.
I had a rear spring crack, tho it was worse than a sliver. I'm not sure I'd want to drive a performance car with a flawed spring! I happen to have two here, as it goes. One is coded RHZ, the other NYR, both way cheaper than the big guys.
I'd opt for graphite-infused poly for my next set. Currently, I lube the sway bar bushings at every oil change..
I had a rear spring crack, tho it was worse than a sliver. I'm not sure I'd want to drive a performance car with a flawed spring! I happen to have two here, as it goes. One is coded RHZ, the other NYR, both way cheaper than the big guys.
I'd opt for graphite-infused poly for my next set. Currently, I lube the sway bar bushings at every oil change..