Weak throttle, moisture dependent

[christine_lives!]

92' Celica GT-Coupe, '93 2.2L 5SFE w/ 120,000k

Long time listener, first time caller...

I just spent my break replacing my water pump, water pump seals tranny pan gasket, tranny filter, oil pan gasket, oil pump seals, corresponding fluid and spark plug wires. I got all my fluid levels adjusted and things seemed to check out alright. On my drive south I began to notice a loss of throttle power. Whenever I pressed, I got a weak response and a bit of engine knock. It was more a physical knock then a sound. It was really bad when it rained.

So today I replaced the distributor cap and it is extremely dry outside. I used some electric spray to try and clean out any moisture. The throttle is still weak. I really don't want to replace the ignition coil and distributor, but I am feeling that is my problem. Any other advice? Could my timing be off 1 or two teeth? The car idles fine, and isn't misfiring. I'm just knocking around ideas. Thanks!

[toyomoho]

If moisture related might be a cracked coil (common on Camry), bad ign wires.

At night when dark spray a fine mist of water on this items and look for arcing. Try this also when the engine is running OK to see if it caused the problems you have.

If the cam pulley is off the engine will always have the same problems, not run fine one day and be worse when it rains.