Finally found my mpg problem
#11
08-28-2012 | 02:34 PM
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In the Staging Lanes
Joined: Jul 2012
Posts: 85
Yes, A vacuum leak that effect the whole intake will just cause the RPMs to go up. But a vacuum leak to just one cylinder can cause a lean condition in just one cylinder. This means more O2 is hitting the O2 sensor. The PCM will richen all the cylinders to compensate. Now the other cylinders are running too rich causing a drop in power. Now you have to press harder on the gas to get up to speed.
#12
08-29-2012 | 08:51 PM
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In the Staging Lanes
Joined: Jul 2012
Posts: 85
Got the camaro back today n here's what they replaced They replaced my upper intake manifold gasket, thermostat seal, lower water manifold gasket and throttle body gasket. And reduced my fuel trim from 20% to the recommended 6%
#14
08-30-2012 | 05:18 PM
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In the Staging Lanes
Joined: Jul 2012
Posts: 85
Yeah but what's funny is that I still have engine vibration from the vacuum leak and I was told by the tech before he started that replacing the intake manifold gasket would fix that...
#18
08-30-2012 | 11:49 PM
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In the Staging Lanes
Joined: Jul 2012
Posts: 85
The car has been shaking since day 1 I've done a tune up and it still does it.. Ive replaced the bank 1 o2 sensor and it still does it
