I was driving to school this morning and there were some traffic on the way to school. I was going around 40MPH in 4th gear for few minutes. And I noticed my RPM needle wasn't moving. Even when the car came to a complete stop it was still up at 2500rpm.

When I reved up my car the needle went up to 3000rpm and stuck there for few sec. After few of mintues of that RPM-odometer worked fine.

Has this ever happened to you? I just get this feeling that I got one of those Zs out there with problem. Mine's 04 PPW MT with 1300 miles on it.

I think i should take it to dealer and have it checked if it does that again. sigh. I hope I didn't get the lemon Z.

 

Was the sun at your back?

A few threads over the past few months suspect it is the sun shining on the tach or speedo and........that there is some optical sensor in there that sticks when it gets direct sunlight.

Next time it happens, try shielding the instruments (with your hand or whatever) and see if it goes away. This could prove the theory.

 

Yeah, this has happened to me as well

It happened twice randomly one day I was driving back home. I was using tiptronic in traffic. Also, I think the top was down so the sun was most likely hitting the dash.

As long as this does not degrade the RPM meter/needle, I'm cool with it...

 

Yea, this happened to me too. I had the same conditions. Seems ok, for now.

 

same thing happened to me...all i did was turn the car off and turned it back on.

 

It happened to me once... quite a while back now, so i don't even remember whether it was that sunny or not. Mine stuck for a couple seconds, by the time i noticed it, of course i tried tappin on the gauges, nothing, then a second later it just started working again. Never happened again so i just dismissed it as fluke.

I have to admit, that theory about the sun hitting some optical sensor sounds pretty far-fetched... what was the reason that this sensor was there? I know there's one on top of the dash, but that's for the auto-climate, i can't even imagine why there'd be a reason on the gauges... or why it would be tied into the rpm needle.

 

so i see quite few of you have had that experience.

i hopt it doesnt happen again.

and haha i just learned its "Tachometer" not..rpm-odometer. i'm still a newb.

thanks for sharing info guys

 

yeah; wouldnt worry about it yet; till you can faithfully reproduce it; the dealer is worthless.

 

Yup, happened to me and it was caused by the sun. See my reply in a previous thread...

https://my350z.com/forum/showthread....threadid=46293