bad mis and running rich at idle

1993 TOYOTA CAMRY
220,000 MILES • 2.2L • 4 CYL • FWD • AUTOMATIC
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QUADRIDER5961
Ihave a 1993 toyota camary 4 cyl it misfires and is running rich u can smell the gas at a idle when u get above 2000 rpms it goes away and runs ok cold or hot it runs the same i did a complete tune up checked the compression its ok no vacuum leaks i can't figure it out
Apr 1, 2015 at 12:51 AM
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JACOBANDNICKOLAS
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Have you checked fuel pump pressure to make sure the regulator is working and not allowing too much pressure to build? Have you checked the coolant temp sensor which could cause the computer to run the engine rich if it thinks it's colder outside than it is?
Apr 1, 2015 at 5:33 AM
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QUADRIDER5961
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No i didn't check the fuel pressures.if i disconect the wire that goes to the temperature sender the check engine lite comes on if i plug it back in the lite goes off so does that mean the temperature sender is good?
Apr 1, 2015 at 8:54 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
No, that doesn't mean it's good. What can happen is this. If the sensor is sending an incorrect signal, the computer doesn't know it's wrong and accepts is as accurate. Regardless, I would start by checking pressure.
Apr 1, 2015 at 9:03 PM
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