This just started happening yesterday morning. I've searched and read up on the "cold oil causes the crank to turn blah blah blah" But this is texas, and it's 97 degrees in my freaking garage, the oil is probably warm enough. All of the problems I saw with cold oil were in the winter. On to the issue!

This only appears to happen when the engine is cold. I start it, and if I take my foot off the clutch, the RPM's start to surge between 1750 and 1250 RPM's. If I disengage the clutch, the surge stops. My car does not move during the surges.

This behavior occurs whether I have the AC on or off. There doesn't seem to be a problem once the engine is warmed up.

Could the problem be my clutch needs to be adjusted? I was thinking that when the clutch is engaged it's touching just enough to cause the engine to sputter (thankfully the computer catches it in time), but not enough to move the car.

Any ideas before I take it into the dealer? I'm comfortable around cars, and I'd like to avoid a trip to the dealer if I could.

 

Ok well I called the dealer and I'm taking it in.

 

neutral switch

 

explain?

 

bad.

zoom check pm..

tell the dealer to check the switch... it is likely going bad.

beers

 

the tranny/shifter one not the clutch switch

 

so I typically like to learn about these kinds of things. Please explain what a neutral switch is and what it does.



lucy! joo gots some splainin todo!

 

it tells the TCM that the car is in neutral so the TCM can send a signal to the PCM and it can go into idle mode. if one doesnt happen neither does the other and the PCM gets confused about what it is trying to do. garbage in garbage out

 

Whenever I start my car in the morning... mine surges to about 1500 rpm, but within about a 20 seconds it calms down. So... aye dunno im not losing any sleep over it or endure the hassle of not having my vehicle for 2 days.

 

gotcha! thanks!

Thanks for your comment, but this isn't normal.

 

well naturally it didn't do it for the dealer. He wants to keep my car one more day to try and start it again tonight and then once more in the morning to see if there are any issues.

On the upside, he did offer me transportation, I didn't need it, but it was a nice gesture.

Also, they said they didn't have the newest flash yet.

 

mine does the same thing in the morning, it'll go upto 2K and then within a few seconds go all way down to 900RPM. This is normal as far as I know

 

yes thats part of the engine programming since 2-3 flashes ago

 

incorrect- he would be getting a call by now asking why he hasnt pinged the server. he's 3-4 update levels behind if thats true. incompetence !

 

so you wanna call hiley mazda and raise a fit for me? You seem to be "in the know"

<3

Here's the number:
800-863-0619

 

christ hiley should know better

 

yeah they seemed to be pretty good when I had some other work done there. Don't know what the problem is.

Should I call them in the morning and request a certain flash? or what?

 

hiley gave me a new flash. "N3Z2-18881-S". horray!

 

Hey did anyone figure this out yet....im currently going tbru the same exact thing....replaced the nuetral switch and same thing....surges everytime i press the clutch....and when i started it it had a fair amount of white smoke only if I rev tho