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Mountain Main · 06-25-2003, 01:35 AM

I don't have a vaccum gauge. I don't have a vaccum line going to my MAP. Where should the line be coming from?

I did some electrical tests.

Key off disconnected the MAP connector measured voltage between VREF and SIG RTN at vehicle harness connector with map unplugged
.8 milli volts

Than I did it with KOEO
73 milli volts

Then I did PKRWUD's test which involved measurings the MAP/BP SIG a green wire. I left the MAP plugged in and back probed one lead of my DMM on the green wire and my other lead of my DMM went to a freshly sanded ground on the body.
216 milli volts

What do you think?

06-25-2003, 01:35 AM	#10
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	My reply I don't have a vaccum gauge. I don't have a vaccum line going to my MAP. Where should the line be coming from? I did some electrical tests. Key off disconnected the MAP connector measured voltage between VREF and SIG RTN at vehicle harness connector with map unplugged .8 milli volts Than I did it with KOEO 73 milli volts Then I did PKRWUD's test which involved measurings the MAP/BP SIG a green wire. I left the MAP plugged in and back probed one lead of my DMM on the green wire and my other lead of my DMM went to a freshly sanded ground on the body. 216 milli volts What do you think?