1966 Mustang 302 oil pressure question

8805 Views 5 Replies 4 Participants Last post by astumpf, May 2, 2008

harold smith

Discussion Starter · May 1, 2008

I have a question about my oil pressure gauge. My oil pressure runs about in the middle of the guage when Im driving down the road.It runs a little below that when it just idles. My question is when the motor warms up i can stop at red light or just stop and my pressure gauge drops down as low as it can get. It doesnt ever drop below the low range but it is right there on the line. This motor has about 500 miles on a rebuild. My buddy told my run 20-50 in the summer time. Any advice would be helpful thanks. Im running 10-30 castrol right now with a motorcraft filter. here is a pic showing what i mean with my gauge.

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Montana's Stang

· #2 · May 1, 2008

1) You probably already have but...make sure your oil level is correct and you aren't losing oil anywhere.

2) Check/replace your sending unit. It's the cheapest to replace and it never hurts to have a new one.

3) Check your gauge and the wiring feeding it.

If you really want to make sure...buy a cheap gauge and a new sending unit and "hot wire" the gauge in. Install the new sending unit and hook it to the "temporary" gauge. If it acts the same way you may need to think about your oil pump.