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Re: Kia Sephia 2001
1checkengine light on,cars pcu has detected a problem,youll need ascan tool to check code,itll point you at problem area.2-sounds like a worned cv axle joint.3-could be related to cv,brakes,suspention,will have to be inspected!
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2001 Kia Sephia 1.8L
Codes P0758 and P1624. Replaced the TCM.
1. Disconnect the square 9 pin connector going to the transmission (only 7 wires in the connector). Locate the Light Green/Red wire on the transmission side of the connector. check the resistance of solenoid "B". Connect one lead of the meter to the Light Green/Red wire and the other lead to the transmission housing. The resistance should be 12 - 18 ohms.
Harness Solenoid B Diagnostic Codes:
it sounds like a fuel problem. i believe its fuel injected so check the fuel pressure regulator and mainly the pump. the pump tends to go first but if you do change the pump change the filter also. have your local mechanic check the fuel lines.
I had this problem after the engine was replaced on my 2001 Sephia, it's a sendor on the engine. This sensor is actually turning the engine off and on while driving... my mechanic replaced it with the one from my old engine and it is fine now
Have your check engine light scanned. Autozone will do it for free. Even if the engine light isn't actively on, it will tell you which codes have been triggered since the last clearing. Following your description, I would suspect damage to your exhaust is damaged. Most likely it is your catalytic converter. They are somewhat fragile due to their design and if you had it high centered on it, the honeycomb may have broken inside it. Just a guess, I'd say a replacement would cost you around $300-$500 installed.
I was facing a similar problem when I bought my car, I think the "check engine" lit due to a problem with shifting control system which obviously made the "O/D-off" flashes.The best solution in this case is to replace the malfunctioning shifting control system (a closed steel box that works like a computer).This is what I did and since then it's running perfectly.