When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 88 wiith the 3.9 and I've noticed that when I shut truck off both gas gauge and oil pressure gauge don't move. But gas gauge works. Any ideas?
The diaphram may be sticking on the oil sensor, but it does not drain with the key off. As far as the fuel guage, as mentioned, it will correct itself per resistance.