SolvedJerks and accelerates suddenly
Chevrolet Equinox 2007 85000 miles
I bought an Equinox 2007 two months ago and it has already presented many failures. The one that worries me the most is that, when driving on an uphill road and over 40 mph, it is really hard to speed it up. When I try to overtake another vehicle and hit the accelerator hard, a forced engine sound becomes audible, the speed goes down and it suddenly starts with a hard jerk, more like a kick. Another thing that happened to me yesterday was that, after fuelling the car, I turned the engine on and the steering was really hard, to the point of not being able to turn the steering wheel. I turned off the car and on again and, luckily, it started working normally again.
5 reports
2
VA
I had this problem and I changed the main flow and it was solved. You should as well check your accelerator.
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Best answer (according to Selma53)
SE
In my case, I changed the valves body and it was the solution to the problem.
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SH
Mine did that. It would slow down and then all of a sudden speed up and audible noise from the engine. It was the timing chain. Have had it replaced 3 times.
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IN
Could be simple as a bad throttle position sensor or as complicated as a bad timing chain
Vote helpfulJA
I had the SAME EXACT acceleration problem. No check engine light either. $3700 in repairs/parts... even a warranty covered replacement transmission...still had the same problem. after 6 months check engine light came on. Turns out front catalytic converter was well beyond repair . The front catalytic converters in these cars go out well before the check engine light comes on making it hard to diagnose
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