Hi,

My engine hiccups pretty frequently at idle - It's very quick cut off sound which you can here from the exhaust and the car shakes very slightly (rpm does not change or bounce) - Could it be air bubbles in my coolant system?

 

I want to know this to, mine hiccups to I just did not know what to call it. it could be coolant air bubbles.... anyone know?

 

Bad fuel pump?

 

hope not

 

funny, mine started doing this also awhile back

 

anyone?

 

mine does this...was way worst before i changed the plugs so maybe check the plugs...

I wouldn't go as far as the fuel pump as then the car would pretty much die and u would notice a drop or bounce (most likely) in the idle from the motor starving for fuel

one thing to consider would be the IACV...most ppl neglect to clean it
that and the EGR witch is engaged at idle. if i recall corectly the egr operates until 1800 rpm (in my f22b anyways) but pls correct me if I am wrong

 

I just replaced my spark plugs and it still hiccups. Since I have been driving it for awhile it is now even worse. The exhuast cuts and the whole car vibrates. Not only in idle but while driving! Please Help!

 

that bad haha... throwing any codes??

 

turn the car on with one plug out of the head and grounded to the valve cover and see if there are any ignition sparks that are weaker compared to the others.

 

u sir are a genius...

 

any resolution to this? i am experiencing the same exact problem with a 98 accord 4 cylinder.

 

to answer my own question, it was crappy bosch spark plug wires, and/or possibly bad NKG spark plugs. new NKG plugs and wires fixed it.