Mechanics

WHY IS MY CAR RUNNING BADLY AFTER I DISCONNECT THE BATTERY THEN RECONNECT IT?

2003 Mitsubishi Lancer • 180,000 miles

I have a 2003 Mitsubishi Lancer ES, 4dr, 2 liter 4 cylinder, 5spd. And my service engine soon light came on about 5 months ago. I figured it might be an oxygen sensor problem, so I disconnected the battery for 30 minutes and then reconnected it and started the car. The service engine soon light turned off and remained off, but for the next 2 days my car would keep stalling if I were to drive it and come to a stop (at a red light or stop sign). I would have to keep my foot on the gas pedal to make sure the engine wouldnt stall. After 2 days it didnt do it again, and everything was fine. Until yesterday.I was just driving on the freeway and my service engine light came on again. So I repeated the same process (disconnected the battery for 30 min and then reconnected it) and when I started it up the engine raced up to 4000 rpm, like it was flooded with gas or I started it with my foot on the pedal (which my foot was not on the gas pedal when I started it). But now my car is running badly again, and im wondering if you guys have heard of this problem before. Anyway if you could email me back ASAP it would be greatly appreciated. THANKS!

-Sincerly,
Daniel Gossner
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Danielgossner
January 3, 2012.



Scan the computer for code/s and meantime clean the idle air control valve and see what happens

Rasmataz
Jan 3, 2012.
Actually I just got my car fixed up. The reason it was running crappy
Was because it had some bad gas, and then after disconnecting
And reconnecting the battery, it ran crappy cause the onboard computer
Takes a little while to readjust to my driving style. At least thats
What the mechanic told me.I also had a bunch of work done. New
Control arms (inner and outer) on both sides, new rocker cover,
A complete tune up, and all new engine and trans mounts.2300 bucks
Later and shes running like a bute. And the guy said my engine
Had the highest compression hes ever seen in an engine with over
180,000 miles on it.

Tiny
Danielgossner
Mar 21, 2012.
Thanks for coming back with the fix-Good Luck

Rasmataz
Mar 21, 2012.