silver_rx7 |
11-02-2003 04:27 AM |
Hi all,
Got this car for a year now. No updgrades, mostly stock. I have this problem, that engine revs surge +500rpm on each gear shifting. For example, if driving on 3rd gear at 3000rpm, and release gas pedal and press down clutch pedal to change gear, revs surge up to 3500rpm, and then slowly go down again within a second or two. It is like if I am pressing the gas pedal during gear shifting. Tested boost sensor, throttle position sensors and throttle cable, all fine. My suspect is a dirty fuel filter which is holding the fuel pressure high, and dampening the pressure regulator response. Any ideas? Also, when I first bought this car I had to flush the fuel in the tank, because it was backfiring when I accelerate under load over 3000rpm, possibly it was old dirty fuel. Backfiring had immediately disappeared after reflushing the tank, but filter might still be dirty.
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