Brief Hesitation When Acclerating
#1
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2017- 340HP Base Auto
I've been experiencing an intermittent split second hesitation when accelerating under moderate to heavy pedal position. The car revs, accelerates and it feels like the fuel cuts out for a split second at around 3800-4500 RPM and then continues to accelerate, rev as normal. Can't consistently get it it to happen.
Fuel pump? Injectors? MAF? I don't have a CEL illuminated (yet). Don't want to take it to the dealer only for them to say.."Can't dumplicate customer concern."
I've been experiencing an intermittent split second hesitation when accelerating under moderate to heavy pedal position. The car revs, accelerates and it feels like the fuel cuts out for a split second at around 3800-4500 RPM and then continues to accelerate, rev as normal. Can't consistently get it it to happen.
Fuel pump? Injectors? MAF? I don't have a CEL illuminated (yet). Don't want to take it to the dealer only for them to say.."Can't dumplicate customer concern."
Last edited by WhiteTardis; 08-09-2021 at 03:50 PM.
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![Default](/forum/images/icons/icon1.gif)
2017- 340HP Base Auto
I've been experiencing an intermittent split second hesitation when accelerating under moderate to heavy pedal position. The car revs, accelerates and it feels like the fuel cuts out for a split second at around 3800-4500 RPM and then continues to accelerate, rev as normal. Can't consistently get it it to happen.
Fuel pump? Injectors? MAF? I don't have a CEL illuminated (yet). Don't want to take it to the dealer only for them to say.."Can't dumplicate customer concern."
I've been experiencing an intermittent split second hesitation when accelerating under moderate to heavy pedal position. The car revs, accelerates and it feels like the fuel cuts out for a split second at around 3800-4500 RPM and then continues to accelerate, rev as normal. Can't consistently get it it to happen.
Fuel pump? Injectors? MAF? I don't have a CEL illuminated (yet). Don't want to take it to the dealer only for them to say.."Can't dumplicate customer concern."
Best to connect to datalogger and see what is happening when the hesitation is occurring, but barring that, I would try the above...
Good luck.
DC
#5
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Could be so many things from your description. Without monitoring sensors to see what is going on, usually, hesitation is either ignition, or fuel related obviously. Not sure how many miles on your car, or if you have a tune or?? With Mid-range hesitation, I usually check the plugs first (depending on miles). You could also check for intake/air of vacuum leaks (that would throw off your MAF if it is getting unmetered air entering the system) - Although that usually would cause rough idle or stumbling as well..., so I would check for leaks next/hissing or smoke test. And then of course injectors or fuel pump/filter.
Best to connect to datalogger and see what is happening when the hesitation is occurring, but barring that, I would try the above...
Good luck.
DC
Best to connect to datalogger and see what is happening when the hesitation is occurring, but barring that, I would try the above...
Good luck.
DC
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