Volkswagen Forum - VW Forums for Volkwagen enthusiasts - Start the engine and RPM's skyrocket

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- - Start the engine and RPM's skyrocket (https://volkswagenforum.com/forum/volkswagen-jetta-bora-19/start-engine-rpms-skyrocket-5346/)

navynuke0407

03-30-2008 06:40 PM

Start the engine and RPM's skyrocket

Whenever I start my 99.5 Jetta 2.0L the rpms sky rocket to right around 3k-4k then slowly work their way down to about 2k and hang out there till i start driving then go back down to somewhat normal... Anyone have any ideas... And whats the normal idling for a 99.5 Jetta 2.0L 5 speed...

emagdnim

03-30-2008 08:20 PM

RE: Start the engine and RPM's skyrocket

My mazda mx-6 did that when i put a cold air intake in and forgot to plug the MAF sensor back in. Is your MAF sensor hooked up and working properly?

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