Recreational Vehicle Lpg Tank Valve/gauge Problems of Buick Encore

Service engine light (po420 code) came on and vehicle begin to vibrate at start up especially. Temp gauge showed overheating with no signs of overheating. Thermostat housing replaced. Service engine light came on again after repair. Mechanic shop replaced converter that was faulty (po420 code) a week later. Service engine light came on (po 420 code) (171 code) mechanic shop replaced catalytic converter, r&r front. , left shop that day engine light came on again. Replace catalytic sensor, next day service engine light came on again. Replace oxygen regulator part and valve coil, (same codes everytime), the service engine light came on again 2 days later. I have spent over $1300. 00 and still have the engine service light on. I have been driving vehicle during this time. I have invoices for the repairs.

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Driving on freeway, approx 74 mph in a 75 zone. About 1. 5 hours in to a 2. 5 hour trip. All systems were functioning and no warning lights were on. Car suddenly lost power on gas pedal , power steering light came on, check engine light came on , all gauges are functioning erratically and then all gauges stopped or went to zero. Light indictating the transmission gear kept changing. But the cars tranny didn't shift or change just the light for the gear indicator wasflashing. Car slowed to approx. 40 mph, with the rpm's racing to approx. 4500/6000. Engine was still running and not over heating or any other lights except check engine and power steering light. Stopped car on shoulder to take inventory of situation, car running and idile rpm's seemed normal chk. Engine and power steering light still on, proceeded to drive again . No leaks or overheating . All gauges came back up/ on. Proceed to drive . . . Car had no acceleration , very little , like the car was still in a higher gear . Speed up very slowly until it reached approx 55-60 mph. But the rpm's were at 5500/6000 , felt like the tranny needed to shift but wouldn't. Slowed down to approx. 35-40 . . To get rpm's in line or more in line. Drove home last hour on side roads and frontage roads with flashers on. Can't drive that slow on a freeway. All of car functional were normals , ac , radio ,windows , lights . Just the power steering and check engine light stayed on with no acceleration power or power steering . . . . Called dealer Monday morning for a tow into the shop .

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