Air shocks or convert

Tiny
DCKELLEY
  • MEMBER
  • 1998 BUICK PARK AVENUE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
My shocks are getting pretty worn so I have to make a decision. Do I convert to the regular shocks with springs or stay with air shocks. My car has 190,000. The air system works for now except for worn shocks. However, if I change to the regular gas shocks I can bypass that system saving myself some headaches down the road if the system fails. Saving money is more important to me than ride. But is there a big difference? I found some gas shocks with springs for about the same price as the air. Thoughts? Thanks, Don
Tuesday, March 5th, 2019 AT 8:14 PM

19 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Hi Don, and thanks for using 2CarPros.

The picture you attached shows shocks with helper springs. They are used when the coil springs are weak and sagging or you carry heavy loads. If you install new coil springs, the height will be fine. Remember, it is the coil spring that holds the weight of the car and not the shock. The shock is nothing but a dampener that slows and controls bouncing.

Now, with that in mind, the call is really yours. Being that it is 21 years old, you may start running into other problems with the system which can get expensive.

Let me know if you have other questions.

Joe
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Tuesday, March 5th, 2019 AT 8:35 PM
Tiny
CARADIODOC
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Thanks for including the photo. Unless those are listed specifically for this purpose, those springs will not hold the car up at all. Those are helper springs to be used to get the suspension ride height up back up to specs after the original coil springs have sagged from age. As proof, you can collapse those shock absorbers by hand. There is no way those can be strong enough to hold up a thousand pounds of car. I could be wrong about those. Original coil springs for this car model are pretty light, so it could be possible these in the photo will do the job.

As a suspension and alignment specialist who has test-driven a lot of cars, I can assure you there is little noticeable difference in ride quality between air springs and coil springs. The big advantage to the air springs is the systems can adjust for different loading.

Look at the rear suspension to see if the pockets and mounts are already there to install a pair of standard coil springs. All of the shock absorbers listed for this car are air shocks which will allow you to keep the self-leveling capability.
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Tuesday, March 5th, 2019 AT 8:38 PM
Tiny
CARADIODOC
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Hi JACOBANDNICKOLAS. Didn't mean to butt into your conversation.
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Tuesday, March 5th, 2019 AT 8:39 PM
Tiny
DCKELLEY
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The coil springs are still be there. These are "replacements" for air shocks.
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Tuesday, March 5th, 2019 AT 8:49 PM
Tiny
DCKELLEY
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JACOBANDNICKOLAS will these work for dampening and slowing and controlling bouncing? This type of shock is what they show to convert from air to regular shock. So they are supposed to work for that. All other answers aside. That is the question. I shouldn't have said about keeping the rear up. The springs are fine
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Tuesday, March 5th, 2019 AT 8:59 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Welcome back:

Yes, they are fine for controlling the bouncing. The ride may be a bit firmer since the shock has the additional spring, but other than that, it's fine. Just make sure, as Caradio mentioned, get a good coil spring in addition to these shocks. I believe he felt you weren't installing coil springs along with the load lever shocks and he is correct. The shock in your picture will not hold the vehicle's weight.

Regardless, let us know if you have other questions. Also, Caradio, never feel the need to apologize. I'm glad you jumped in.

Take care,

Joe
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Tuesday, March 5th, 2019 AT 9:14 PM
Tiny
CARADIODOC
  • MECHANIC
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Sorry for my misunderstanding. I was thinking about air springs that are huge airbags that can be used in place of coil springs. The replacement coil springs I described are what you already have.

The issue is still correct ride height, and that has to be measured at specific points to be sure it's right. Your old shock absorbers are air adjustable to correct ride height as you add more and more dead bodies in the trunk. Those in your photo are designed to handle the majority of height problems when the original shock absorbers stop working. Ride quality is likely to be improved, not from switching to shock absorbers with helper springs, but from replacing mushy and worn shock absorbers.
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Tuesday, March 5th, 2019 AT 9:15 PM
Tiny
DCKELLEY
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Yep, I just want to use these instead of air shocks. I realize they don't have all the benefits of air. Basically this would be just changing from air to reg shocks. They will do the job? Correct? Thank you and sorry about the mix up but still filling just a bit confused. I think you did answer my question in your last answer Joe.
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Tuesday, March 5th, 2019 AT 9:21 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Not a problem. And yes, you have to install coil springs in addition to the shocks you identified. They come as a set in the conversion kit.

Feel free to let us know if you have other questions.

Take care,
Joe
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Wednesday, March 6th, 2019 AT 12:07 PM
Tiny
DCKELLEY
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So there are no springs in there now?
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Wednesday, March 6th, 2019 AT 12:38 PM
Tiny
DCKELLEY
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I assumed there were springs and the air shocks.
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Wednesday, March 6th, 2019 AT 12:40 PM
Tiny
JACOBANDNICKOLAS
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There should be coils there now, but when you get the conversion kit, that usually replaces everything. I attached a picture for you to look at. The picture is what you should have presently. You will see a coil spring and an air shock. The air shock is replaced with the original picture you sent me. The coil spring in the picture is usually part of the conversion kit and gets replaced at the same time. Check your vehicle and confirm the picture is the same as what you have.

I hope this helps. Let me know,

Joe
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Wednesday, March 6th, 2019 AT 12:47 PM
Tiny
DCKELLEY
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I can get just the shocks for $70.00. They call those the conversion kit. Do you think I need to do the springs too? Seems like the ride height is fine. But she hits those bumps hard etc. I can do the shocks myself. I'd have to have a mechanic do the springs if necessary. As I've said before I'm working on a very fixed income. I trust your wisdom though. Don
PS. Sorry this is taking so much of your time.
PS. I'll look and see if I can find a kit with the springs if you think it's for the best.
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Wednesday, March 6th, 2019 AT 3:30 PM
Tiny
DCKELLEY
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https://shop.advanceautoparts.com/p/monroe-air-shock-to-load-assist-shock-conversion-kit-90007/10020739-P

i can get these for $77.00 load assist shocks no need for anything else apparently.
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Wednesday, March 6th, 2019 AT 3:42 PM
Tiny
DCKELLEY
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The spring conversion kits use more powerful springs with a non load assist shock. $400.00 for this as opposed to the load assist shocks for $77.00.
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Wednesday, March 6th, 2019 AT 3:59 PM
Tiny
DCKELLEY
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Will I need to do anything else? I see some kits with resistors? Or can I switch and go?
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Wednesday, March 6th, 2019 AT 7:19 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Once you install the kit, the only thing I can think of would be to remove the fuse for the compressor. Other than that, you should be fine.
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Thursday, March 7th, 2019 AT 5:09 PM
Tiny
DCKELLEY
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Thank you.
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Thursday, March 7th, 2019 AT 5:11 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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You are very welcome. Let me know if you run into trouble or the outcome.

Take care of yourself,
Joe
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Thursday, March 7th, 2019 AT 7:09 PM

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