Good start with battery and at starter & grounds. Look for some wire chafing. There might be some stickys in electrical section help you track it down. Some one here a similar problem to bad I cant remember the out come. Good Luck.
Cut out at speed
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Great info.
If the motor acts like the ignition cuts out, and the speedo drops to zero ; look at the connection block where the sub harness from the motor connects to the main harness. One or more of the pins in that block are losing contact . I've had this same thing happen more than one time to a few I've looked at . I've replaced any questionable pins and sockets , packed with dielectric grease, reconnected block together . No more problems.
The key question here is this : The speedo has to drop to zero all at once. ( at times the other dash gauges will also drop off too ) If it does not, this is not the fix for your problem .
I will check this. As far as I could tell the speedo dropped to zero but like I said it was like one second that this happened and when I looked down the speedo was going back to 70. I don't know if it "zeroed out"If the motor acts like the ignition cuts out, and the speedo drops to zero ; look at the connection block where the sub harness from the motor connects to the main harness. One or more of the pins in that block are losing contact . I've had this same thing happen more than one time to a few I've looked at . I've replaced any questionable pins and sockets , packed with dielectric grease, reconnected block together . No more problems.
The key question here is this : The speedo has to drop to zero all at once. ( at times the other dash gauges will also drop off too ) If it does not, this is not the fix for your problem .
Thats close enough, look at the pins and sockets closely. You may want to pull and "wiggle" the plug as the motor idles to see if it will cut out on you.
If you look in the wiring diagrams, you will see what pins and sockets control what functions.
opcorn
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