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1993 Toyota Corolla Vacuum noise/check engine light
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Posted at Sat Nov 07, 2009 12:56 pm |
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By
robertsidney,
New to the forum |
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Give Feedback | Votes: 0 |
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Engine Mechanical problem
1993 Toyota Corolla 4 cyl Two Wheel Drive Automatic 171000 miles
Dear sir, I am writing see what can be wrong. My check engine light came on and I did like suggested and had the codes read. I replaced the oxygen sensor, air temp, coolant, and map sensor. My car still sometimes seem to run rich. I somtimes will be driving and the check engine light comes on and then a strong vacuum sound happens and the light goes off? Is this an EGR vacuum solenoid or is it the throttle getting stuck open or shut? Maybe it's neither. |
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Posted at Sun Nov 08, 2009 6:14 am |
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By
mmprince4000,
Certified 2CarPros Technician |
 (2159) Give Feedback | Votes: 35 |
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Could be an intake manifold leak, injector seal leak etc.
I would check the intake and injector gaskets, look for cracks, check intake manifold bolts for looseness.
The EGR will function at steady speed and meters a small amount of exhaust gases into intake to reduce NOx emmissions.
I would remove EGR and clean it up, replace gasket.
What code are you getting? |
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