How to test for worn out coil springs?
- Thread starter Carnoobie
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Sorry, but I have had a few trucks that definitely wore out springs over lots of miles. Takes about 100k plus miles but I have carefully measured ride heights and probably replaced a handful of them.
Large autos will also experience this.
Large autos will also experience this.
Lots of the CVPIS, especially 98 and 99s had springs that wore out really quickly in the back. My 98 put a kink in the exhaust from backing down the PD driveway and braking- dragged the exhaust every time. My 04 Merc had worn out rear springs when I got it. Back end drooped when I put a full cooler in it. Some progressive rate Moogs solved that issue. They definately wear out...you will notice sagging under load and a sloppy ride. Usually when the springs go the shocks are done too- the spring going away puts a big load on the shocks. I changed my back shocks too when I did my springs. Driver side shock had no compression damping at all. You could compress it with two fingers.
If the springs sag with mother-in-law in the back seat, replace one or the other!
Kestas
Staff member
The old car manuals used to specify ride height, measured at a point on the frame. And yes, metal springs can and do take a set. Engine rebuilders know this and need to measure valve spring height to determine if they can be reused.
Kestas
Staff member
Right. Don't condemn the springs if the ride height is okay in an empty car.
If weight is causing a problem with sag, there are other options to deal with it.
If weight is causing a problem with sag, there are other options to deal with it.
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