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Changed fuel gage sending unit ,, no luck

682 views 3 replies 2 participants last post by  Brets87 
#1 ·
My fuel gage usually is stuck waaaaaay above full. Then it just ends up reading what it wants too. So put a new sending unit in today and a new pump. But the damn gage still does it. Any one have a thought on this ? Thanks
 
#2 · (Edited)
Youve most likely got a loose/corroded ground wire at the gauge or sending unit or youve got a bad anti slosh module.The ASM is attached to the back of the instrument cluster with a torx bolt.The 90-93 module is shown in the picture below.The 87-89 module doesnt look exactly like the 90-93 module,but looks similar,mounts in the same location and does the same job.
The cheapest thing to do is try replacing the capacitor on the module,if youre working on a 90-93 module.The capacitor fixes the problem 9 out of 10 times.The module is expensive($90-$150)but the capacitor is only $1.39 at an electronic supply store.If you decide to try this repair,make sure you pay attention to polarity when you remove the old capacitor & install the new one.There is a + & - side on the capacitor,so install it correctly.The large blue object,on the module shown below,is the capacitor you need to replace.

100µF 35V 20% Axial-Lead Electrolytic Capacitor
Model: 272-1016 | Catalog #: 272-1016
 

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