i have a 2001 dakota, lately now that it is cold outside when i put it in park the rpm's drop like it is going to stall[ stalled a few times last year] then returns to normal. it only does this in park and cold weather, runs fine otherwise. any ideas what is causing this?

 

when was your recent tune up?

 

as in plugs and wires? i havent had that done yet only have about 40000 miles on it. would it need it already

 

yea, i would definately start there first, in the manual it says like every 30K miles, cap rotor plugs and wires

 

it is still puzzling why it only does it when its cold our and in park. as soon as it warms up it doesnt happen

 

i meant when the weather is warm not the truck

 

I have the same problem only in reverse and cold weather.No codes show.It's the crank senosor or the cam sensor

 

how big of a job would it be to replace them

 

I just paid the dealer 200.00 you could get a garage to do it cheaper.i just did the crank sensor and it solved the problem.sounds like it would work for you as well.

 

you may be able to do it yourself ,but it is in a tough spot behind the motor on top of the bell housing.The part cost about 45.00 from a parts store