my 1999 chevy van started bucking after warmed up and temperature gage goes up when left idlying why

Asked by JuliaBida Dec 21, 2015 at 05:19 AM about the 1999 Chevrolet Venture 4 Dr LS Passenger Van

Question type: General

when driving pass 50 plus miles my van starts bucking the mechanic did so
many things and still not working properly.  Also the van temperature gage will
go up when the car is in parked.  Please help.  Need to get it fixed soon.  
Thanks

1 Answer

171,525

Wish you had a list of what your mechanic has checked. So my first guess would be to check the fuel pressure, and check cap, rotor, wires & plugs. The heating thing, possible the cooling system may need a flush, or the fan clutch may need replacing,

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