- Location
- Colorado Springs, CO
Okay, I know what a CPS is, I replaced the normal one with a high altitude one on my 90. I have a good idea how they work.
I don't understand the behavior of my current sensor.
About 6 months ago, the Jeep quit at the first stop light on the way to work. The idle on it is probably 500 rpm or so, lower than spec. It wouldn't start up until I unplugged the CPS and plugged it back in. Classic CPS symptoms. Drove it to the mechanic a block from the house, told him the symptoms, he agreed on the CPS, and supposedly replaced it.
So a few months later I'm having CPS symptoms again. Driving at 75, momentary cut out, keeps running. A couple more stalling at idle times that were cured by the momentary unplug routine.
I don't understand:
1. Why this new sensor seems bad?
2. If having the lead near the header pipe is causing the effect?
3. What unplugging and plugging the connector does to make it work? The connector contacts are clean.
4. I know I've seen somewhere a procedure for moving the cps closer to the flywheel to make it work better. Anyone know anything about this?
5. Just swap it on general principles, and hope that the last one was marginal to start with?
Thanks,
Fred
I don't understand the behavior of my current sensor.
About 6 months ago, the Jeep quit at the first stop light on the way to work. The idle on it is probably 500 rpm or so, lower than spec. It wouldn't start up until I unplugged the CPS and plugged it back in. Classic CPS symptoms. Drove it to the mechanic a block from the house, told him the symptoms, he agreed on the CPS, and supposedly replaced it.
So a few months later I'm having CPS symptoms again. Driving at 75, momentary cut out, keeps running. A couple more stalling at idle times that were cured by the momentary unplug routine.
I don't understand:
1. Why this new sensor seems bad?
2. If having the lead near the header pipe is causing the effect?
3. What unplugging and plugging the connector does to make it work? The connector contacts are clean.
4. I know I've seen somewhere a procedure for moving the cps closer to the flywheel to make it work better. Anyone know anything about this?
5. Just swap it on general principles, and hope that the last one was marginal to start with?
Thanks,
Fred