Question about Saturn Cars & Trucks
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Posted on Jan 02, 2017
if you have high resistance in secondary ign. system (plug wires, ign.coil) this will cause this code to set. make sure you are using a high quality spark plug wire set. not from autozone!!! and denso non platinum tipped spark plugs. also use a diaelectric grease on plug wires to keep moisture out.
Posted on Mar 31, 2009
For the 1995 SC2:
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Posted on Apr 14, 2009
First, if you have access to a scan tool, check the reading of the coolant
sensor. Does it read a logical number? If so, the problem is likely intermittent.
Perform a "wiggle" test by wiggling the connector and harness to the
sensor while watching the reading on the scan tool. Watch for any drop-outs.
Drop-outs would indicate a bad connection. If the scan tool reads an illogical
temperature, check the resistance of the temperature sensor. If it is out of
specs, replace it. If it is in specifications, unplug the sensor and, using
a fused jumper wire, jumper the two terminals of the connector together. The
temperature reading should now be maxed out to above 250 degrees F. If not,
there is likely a problem with the ground circuit or voltage supply.
Check for 5 volts reference voltage at the connector. Also check for ground presence at the connector. If you do not have 5V ref. and/or ground continuity, check for these back at the PCM connector. If you have these at the PCM connector, then repair open or short between the PCM and the sensor. If you do not, remove the offending wire from the PCM and then check for proper voltage at the PCM pin. If it's present now, repair short on the circuit. If it isn't present after removing the wire and checking the pin, replace PCM
Posted on Sep 15, 2009
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