Diagnosis By Symptom Test: 1.9L
- When engine stalls in operation or during SELF-TEST, runs rough or misses, or has an "always rich" or "always lean" condition, perform the following checks:
- Perform SYSTEM CHECK, ISC Check. Use TEST SS - SYSTEM CHECK step 1).
- Check BP sensor, using TEST H - BP SENSOR , step 11).
- Check for, and repair, any bad ground or power connections.
- Check ignition components (cap, rotor, wires, coil, & plugs).
- Check basic engine components (valves, cam timing, compression, etc.).
- When detonation (spark knock) occurs, go to TEST W - EGR ON/OFF CHECK , step 1).
- If on restarts, high idle speeds and 3-5 minutes of detonation occur, go to TEST W - EGR ON/OFF CHECK , step 1).
- If no fast idle occurs when A/C is turned on, go to TEST M - NEUTRAL-A/C SWITCH , step 1).
- If gasoline fumes accumulate in engine compartment, go to TEST Y - CANISTER PURGE (CANP) CHECK , step 1).
- If A/C does not cut-off under wide open throttle (WOT) conditions, go to TEST GG - WOT-A/C CUT-OUT , step 1).