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car not excelerating properly?

I have a 2001 hyundai coupe. The check light was flashing and the car was going very slow. I put it on the machine to check for fault it highlighted the coil. A new one was put in but there is no change can you help?

teresa mc cauley
January 2009
I had a problem with this with my Hyundai actually just recently. First my Upstream O2 censor went and then it started doing it again when my Downstream O2 censor went.
It would be fine but then feel as if it was "choking up" and wouldn't let me accelerate.
Hope this helped you :)

Alicia
March 2009
possibly excessive carbon build up in throttlebody and valve seats.... maybe cheap fuel, when was the last time ya tuned it up... or ran a type of fuel injector cleaner in it?

wrabbit1981
January 2009

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