Subject: Re: New Member - 93 Running Poorly by pr0zac on 2010/4/27 14:01:59
Quote:
BillH wrote: No Matt, 2 wire, yellow is signal, black is ground (in the ECM). But the tape would make sense if it was a one wire.
Mike the SES is on because of the 15, the 15 is a signal voltage problem. IIRC, the 142 will show when the sensor is unhooked. Ck the connection and look at the harness for chaffing, shorting to ground. May be why it's erratic The clear the code.
I'd suggest that you clear the codes with the dash buttons, it's a little easier. You can clear them in modules 1.7, 4.7 and 9.7.
Also, there should be 5 v. at the sensor connector, yellow wire.
it will show the lowest value if you unhook the coolant sensor. i worked on a 94 box van last month that needed a new connector for the coolant sensor. it ran like shit all the time until you pressed on the connector and it would smooth right out. you need to plug a scan tool in and see what the computer is seeing. not the dash.
