Hi guys.I am driving local made car by PROTON. One of Malaysian national car maker. How ever the engine using 4G18 engine by Mitsubishi. Recently water goes inside my engine bay. I already done engine overhauling inclusive replacing one of the piston liner. The machine shop who done the job have checked everything and confirmed that my engine block and head in good condition. After fix everything working fine except my idling going crazy. So I went to scan my ECU to make sure it is ok. The mechabic say my ECU fine but the throttle body fault already. My idling jumping from 500 to 1000rpm and it sound like boiling water. So I tried seek for 2nd opinion, but they keep saying the say same thing. Throttel body!So I go for changing it to new one. Now the idling stable but I cannot get it below 1000rpm. It stay about 1500rpm and lower down to 900+ when I turn on AC. Can ECU cause the problem?Does the ECU control the amount of fuel injected?Thanks.
Thursday, June 2nd, 2011 AT 1:41 PM