Car "burps" at idle?

1976 Views 6 Replies 5 Participants Last post by astolt12, Mar 9, 2015

astolt12

Discussion Starter · Mar 8, 2015

Hey all,

Wanted to see if you could shine some light on a very minor (i think) issue that i've noticed with my 2011 5.0.

When I stop at a red light or sit in traffic for a few moments the car will settle in at a 650RPM perfectly with fluctuations of 10 or so RPM.

Then, randomly it'll "burp" which feels like a small pothole when driving and last for less than half a second.

RPMs seem to drop when this happens. No problems driving and it seems to be very random but happens atleast once.

Any idea what this is?

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5LHO

· #2 · Mar 9, 2015

The a/c can cycle on and off in a variety of climate settings. This can cause a momentary dip in idle, if that's what you're trying to say.

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astolt12

Discussion Starter · #3 · Mar 9, 2015

5LHO said:
The a/c can cycle on and off in a variety of climate settings. This can cause a momentary dip in idle, if that's what you're trying to say.

Even if I am not running the AC? I see the gradual dip when i engage the system in the warmer months but this is an abrupt here and gone "burp/thump" which feels like a small pothole in the road but it only occurs sitting still.

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gt1120

· #4 · Mar 9, 2015

Probably normal... mine does it too.

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jjandascog

· #5 · Mar 9, 2015

Mine to

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Blazin72

· #6 · Mar 9, 2015

astolt12 said:
Even if I am not running the AC?

Yes

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astolt12

Discussion Starter · #7 · Mar 9, 2015

Awesome, good to know. Today was a little warmer and it seemed to run just fine with no burps. might just be a cold weather thing.

Thanks for the input!

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