1999 Geo Tracker Suv quit while driving

Tiny
RICK GRAYBILL
  • MEMBER
  • 1999 GEO TRACKER
Engine Performance problem
1999 Geo Tracker 4 cyl Two Wheel Drive Automatic

Suv quit while driving, won't restart, ran codes, cam position sensor circuit malfunction. Will this sensor cause this problem? It cranks but won't start.
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Wednesday, August 26th, 2009 AT 12:34 PM

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Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hi Rick,

Yes it can be the cause of your no start. If that is the only code you got and your fuel pressure is good then the Cam Sensor is the most likely the culprit.

Here is some added info on the cam sensor.

On many engines with distributorless ignition systems and sequential fuel injection, a camshaft position sensor is used to keep the engine's control module informed about the relative position of the crankshaft. By monitoring cam position (which allows the control module to determine when the intake and exhaust valves are opening and closing), the control module can use the cam position sensor's input along with that from the crankshaft position sensor to determine which cylinder in the engine's firing sequence is approaching top dead center. This information is then used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. On some applications, input from the camshaft position sensor is also required for ignition timing.

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Wednesday, August 26th, 2009 AT 4:35 PM

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