guys, i have a problem with my car, its a proton 1.5i SVDO. recently put my car into insurance workshop for about 2 weeks to repair my rear bumper. I collected my car last Tuesday and i couldn't start my car. so with the help of the workshops back up battery, i managed to crank it n start-up.
1st thing i noticed is, during cold start my engine usually kicks up to 1.1-2k rpm to warm up engine. but no, it didn't happen, instead it idled at 7-800rpm...very poor back pressure at the exhaust.
2nd thing i noticed is, ever since i started my engine, the 'check engine light' did not go off..I have tried disconnecting the battery to reset the ecu few times but end up same result.
3rd thing i noticed is, after some time leaving the car idling poorly i tried revving higher for a short while. guess what? the engine started to mis-fire! that was a first for me when i heard a few bubbling followed by a POP...
4th thing i noticed is, from the workshop usj7 traveling back to my home in subang, as i shift to neutral and brake to stop at traffic lights, mati engine around 4 times...very frustrating as the car also felt extremely sluggish while on the road
I told the mech, "hey, i sent in my car for you to fix the rear bumper...now when i collect my car i'm having trouble from the front." He insist that the car is under-used(which is true) and the ecu adopted a faulty setting for a few times the jump the car. what he promised me is to go back on this coming Monday to get the ecu on a device called "MUD" to troubleshoot and restore to factory settings.
In ur opinion guys, what do you think is really wrong? ecu settings? spark plugs?(yet to check if they had swapped my iridiums)