I purchased a used xg300 2001, while driving the power seemed to de accelerate and the checkengine light came on. It went about 1000 ft. and I came to a stop light and my engine stalled.I tried to start and it was still unable to start. I tried about 15 minutes later and it restarted, was able to make it home but check engine light was still on. I read about the PCMS were recalled because of a defect.Since I purchased this vehicle used, is it expensive to be repaired? Thank you, Judy Whitcomb
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check engine light will not go out or codes cleared till computer is cleared so if you have set off a code while trying to diagnose it will stay in memory with that in mind
PO171 & 174 are related to bank 2 lean o2 sensor reading high oxygen in exhaust at sensors PO120 has to do with throttle position sensor input out of range PO306 is a misfire in #6 cylinder
in my opinion any miss will cause o2 sensors to read lean because the cyl is in effect a air pump sensors only pick up o2 not the fuel does you engine run rough or hesitate/shaking on acceleration i would check coil wire and plug for #6 also the injector not working will cause miss also they look ok do compression test on cyl will read 150psi if you find cause of miss you will be able to diagnose lean
with the tps sensor check to see if the connector was disconnected at any time you were testing
basically you need to isolate misfire and fix then have the computer cleared of codes drive car and if engine light comes on then we will go through test procedures for new codes
i hope this helps you to get a few ideals on how to proceed good luck ley me know
this seems to be an engine pressure loss. a leakage in the headgasket or headgasket busy blowing. an engine gets it's power through the pressur it builds up. no pressure, no power. a good mechanic should help you. don't take it to hyundai. they will rip you off. shouldn't be an expensive exercise. otherwise it could be the 4weel drive system busy saying goodbuy. a secondhand unit shouldn't be too hard to find. may be a little expensive though. it can also make the car not to accelerate. good luck.
I'm a Platinum Certified Hyundai Technician. Low RPM and Limp Home are always accompanied by each other. Throttle body cleaning FIRST - see what that does. ETS motor not probable, crank position sensor (maybe, because engine stops).. if crank position sensor, there's usually a diagnistic trouble code which identifies it. Clean the throttle body first... then see what happens.
If you can't comply with my requests, then take the vehicle into a Hyundai Service Center and have them diagnose the problem (pay the diagnostic fee). they will give you an estimate of repairs (parts, labor, tax, time-frame, etc). Best solution I can offer you.