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Jeromy Madison
Jeromy Madison,
Category: Toyota
Satisfied Customers: 71
Experience:  Owner/Technician at Mad Auto Repair
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Corolla 2007. hesitates between 70 and 80 kph. plugs

Customer Question

Corolla 2007. hesitates between 70 and 80 kph. plugs changed, coils examined no problems found . If I accelerate while hesitating runs smoothly. At all other speeds runs smoothly.
Submitted: 1 year ago.
Category: Toyota
Expert:  Jeromy Madison replied 1 year ago.

Hello, I think you have a throttle position sensor failing. To test it you will need a lab scope.

I hope this helps.

Customer: replied 1 year ago.
The only thing Jeromy is that the engine check light does not come on.
Expert:  Jeromy Madison replied 1 year ago.

I understand there is no check engine light. When this occurs the check engine will not occur because the issue is that there is a spot in the throttle position sensor that is bad and most likely only at one speed. I have seen this issue many times it is very common.