Code p0443
P0443 Code is purge control valve circuit. Go to the driver side near the battery or better yet use the underhood sticker emission diagram That black cylinder is the canister,on it is the purge valve which hoses lead to the intake. make sure the hose are not torn,or leaking or disconnected if it is clear the code rerun the monitor (just drive it its 2 trip),because more likely that would be the code for P0443.Just because its a valve circuit doesnt mean its the valve circuit the ECM sent a command to purge and the MAP did not detect a purge,The ECM doesnt know if it is caused by a bad purge solenoid a disconnected line for the purge (normally closed) so it coded it if you want to fix it it is either the hose of the purge or the valve itself.
SOURCE: need to know what the trouble code numbers are
P0743 is the Torque Converter Circuit Solenoid.The solenoid plug is on the front of the transmission and has a dark green/white and orange/black wire. The dark green/white should have 12V on it from fuse #10 when the ignition is on. The orange/black is a grounding wire from pin 79 of the powertrain controller which should only be grounded when the car is going over 45 mph or so. You could check that the wire is patent between the plug and the powertrain plug (near 0 ohms). The solenoid is a coil or wire so it would have a low, but non-0 resistance, maybe less than an ohm, but still not 0. To really test it you would need an impedence meter, but a good digital ohmmeter should show it to be slightly more resistance than is shown when you test the resistance of the meter leads themselves.If the resistance, the patency, and the 12V supply is all shown to be OK, then I would suspect the solenoid is not functing properly. If you are getting torque converter lock up when you accelerate slowly from 40 to 50 mph then it is working and the code is false. P1899 Park or neutral position switch stuck in park or gear. Recap: P0743 Torque converter clutch circuit faulty, P1899 Position switch to park and nutral stuck. Check the wire harness and look for any clips may be lose or disconnected and wires condition. Good luck and keep me posted. be glad to help
SOURCE: setting the timing on a 1999 plymouth neon
The best way for you to do this is to go to a autostore and buy the repair manual for a 95-99 dodge/plymouth neon. That will help you better, because you have to pull apart the front of the motor (passanger side). Its not as hard as it sounds. 90% chance your engine is a sohc. If needed i can give you the complete directions for doing this but easer for you to see it in the book.
hope this helps
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