454 chevy surging and stalling
My friend, who I travel with, has a 1994 chev 454 winnebago brave with throttle body injection. He has had continuous trouble with it and has not been able to solve it, despite many trips to the shop ...
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If the 02 sensor has not been replaced then it's time (you won't believe the difference in power it can make). And they're cheap too.
Also check the EGR valve. To do so, unhook the vacuum line form it and plug the line off. Drive it around for a short time. If it runs better then it's time for a new one. DO NOT continue to drive without it. You will have knocking that will eventually do real damage.
Does it have an exhaust leak around the two manifold "donuts"? If so then this will cause the 02 sensor to have false readings. There is a better, metal donuts available that will last longer.
Also check the EGR valve. To do so, unhook the vacuum line form it and plug the line off. Drive it around for a short time. If it runs better then it's time for a new one. DO NOT continue to drive without it. You will have knocking that will eventually do real damage.
Does it have an exhaust leak around the two manifold "donuts"? If so then this will cause the 02 sensor to have false readings. There is a better, metal donuts available that will last longer.
