69 fuel level / oil level instrument compatible with 70 senders?

[Sun888]

I get erratic readings from my oil level gauge (1970 2.2E) at higher revs/speed. I thought a good way to quickly check if the gauge is faulty or if it's something else would be to quickly swap the current gauge with a restored 69 gauge that have lying around.

Anyone knows if a 69 gauge (production date presumable 05.69) is compatible with the 1970 fuel and oil level senders? I usually keep my hands of all things electric unless really simple and don't want to fry anything.

Thanks!

[gled49]

Oil level is only stable at idle when checking level, don’t pay any attention to it at speed.

[Sun888]

Thanks Gled - I know. Something is still amiss. The needle is dancing across the instrument wildly. Which it doesn't in other 2.2Es I have driven and I want it fixed. A question of keeping everything in working order. Well, as much as possible.

The question therefore remains: Is a 69 gauge (production date presumable 05.69) compatible with the 1970 fuel and oil level senders?

[ejboyd5]

Why not connect an ohm meter to the sender. Actual readings don't matter, but if you get the same wild variations you will determine that the problem probably lies with the sender. There is also the likely possibility that one of the leads between the sender and the gauge has frayed and is either grounding or opening when the car is in motion. If the sender tests relatively stable, move your meter to the gauge end of the leads and retest while driving.

[beh911]

Why not connect an ohm meter to the sender. Actual readings don't matter, but if you get the same wild variations you will determine that the problem probably lies with the sender. There is also the likely possibility that one of the leads between the sender and the gauge has frayed and is either grounding or opening when the car is in motion. If the sender tests relatively stable, move your meter to the gauge end of the leads and retest while driving.

^^^^^^^ that

[Sun888]

@ejboyd: Cool. Simple and straightforward. So much so that I can't fathom why I haven't thought about it myself. Many thanks - appreciate it!

[edmayo]

It is often loose connections at the sender male spades, the female spade connectors get to be a loose fit on the male spades. Also the bolt tightening the male spade will be loose allowing for a bad ground connection.