Question about Cars & Trucks
Have code po302 coming on my chevy tahoe tryed changing spark plug, fuel injector, swaping coil and still continues to come on also check compression and it read good what could be the problem????
The code means the computer has detected a drop in RPM for cylinder number 2. If you know compression is good, it has to be spark or fuel.
Have you checked for power and signal for the injector with a low voltage test light ? Do you know for a fact the coil is firing on that cylinder ?
Posted on Jul 16, 2013
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Posted on Jan 02, 2017
SOURCE: missing on one cylinder
Replace the coil going to that cylinder, and then replace the valve cover gasket to prevent further oil from getting on the new coil. If it is not the coil, the crank sensor could have gone bad in it.
Posted on Aug 05, 2008
ignition control module, throttle position sensor and other sensors need to be tested to establish problem, any codes from OBDII ? check engine light staying on ?
Posted on Jul 04, 2010
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