Is my ESS going bad now?
07-31-2006 | 05:26 PM
#1
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Joined: Mar 2005
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From: Amherst, WI
Is my ESS going bad now?
You guys may remember This post
I've since fixed THAT problem with a new PCM.
Since then, while on the way to Missouri it was nearly 100 degrees, my Tach started acting really weird. It would drop and fluctuate between 500-1000RPM on the tach.. but if I started accellerating, it would jump to the correct RPM. Sometimes, the tach would drop to zero and kick the cruise control off.
Then the check engine and wait to start light would light up.
This would also kick the AC and alternator off.
I removed the sensor, cleaned the bottom of it, and re-gapped it to a credit-card sized gap, and re-installed it. It worked pretty nicely for awhile, but the next day, when it started getting really hot out again when I was on my way back to WI, it started acting up again.
Does this pretty much point at the Crank Sensor/Engine speed sensor as the culprit?
Thanks in advance!
I've since fixed THAT problem with a new PCM.
Since then, while on the way to Missouri it was nearly 100 degrees, my Tach started acting really weird. It would drop and fluctuate between 500-1000RPM on the tach.. but if I started accellerating, it would jump to the correct RPM. Sometimes, the tach would drop to zero and kick the cruise control off.
Then the check engine and wait to start light would light up.
This would also kick the AC and alternator off.
I removed the sensor, cleaned the bottom of it, and re-gapped it to a credit-card sized gap, and re-installed it. It worked pretty nicely for awhile, but the next day, when it started getting really hot out again when I was on my way back to WI, it started acting up again.
Does this pretty much point at the Crank Sensor/Engine speed sensor as the culprit?
Thanks in advance!
07-31-2006 | 07:10 PM
#2
Chapter President
Joined: Feb 2002
Posts: 6,102
Likes: 2
From: Red Deer, Alberta Canada
I would say yes... The magnetic sensor in those can start to get an internal short with vibration and heat. A little more heat will cause the wires to separate and intermittantly not cause contact.
Before really getting into the sensor, try cleaning all the connectors on the sensor and near the fire wall for any chance of a bad connection.
Before really getting into the sensor, try cleaning all the connectors on the sensor and near the fire wall for any chance of a bad connection.
07-31-2006 | 07:12 PM
#3
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From: Amherst, WI
Originally Posted by Lil Dog
Before really getting into the sensor, try cleaning all the connectors on the sensor and near the fire wall for any chance of a bad connection.
08-01-2006 | 01:15 AM
#4
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Joined: Dec 2003
Posts: 3,077
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From: Garrard county, Kentucky
Yes; the connector for the sensor is around the thermostat, but id say its probably just done for, and that you are better off to buy a new one and be done with it. I just started mine one morning, and it wasnt working. It never did just barely work; but sounds like your problem to me.
Eric
Eric
08-08-2006 | 01:18 PM
#6
Chapter President
Joined: Feb 2002
Posts: 6,102
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From: Red Deer, Alberta Canada
Originally Posted by Bobcat698
The connector for the actual sensor is up towards the thermostat, correct?
I have seen some guys having connections at the PCM giving problems as well. I don't have an electrical diagram with me, but one of the pins for the PCM for the CSS or ESS might be loose or corroded.
Aren't electrical problems fun???? NOT...
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