A little nippy this morning...

MZ DAIZY

Car always garaged, went down to 20 degrees last night but temp in garage was 65 degrees.

Opened garage door and Pushed start button, started normally.
Left something in house, turned car off went inside.
Roughly 20 minutes later, started car again.

Slowly reved it’s way up (with no help of mine) until it hit rev limiter, then worked it’s way down to idle.

Car is running rock solid as usual, but I had a TPS go bad on me and this is exactly how it started.

Not too concerned right now, but anybody have this happen? I have a Gen III intake and a FI CBE with a revtech tune done by Z1.

nandosman

I would have freaked out

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FI Non-Res Test Pipes | FI 18" Res CBE | Stillen Gen 3 CAI | Dynotuned @ Dynosty EcuTek 325 whp

JARblue

Huh? A tire pressure sensor causing engine idle issues? That doesn't make sense to me

Hopefully someone else can chime in for you. I've had my idle rev up like that before. Not to redline though. Mine was just dirty MAF/TBs.

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redondoaveb

TPS- throttle position sensor?

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
700+whp

BettyZ

That's the Z calling you a cocktease for that quick on/off.

Sent from my SM-G955U using Tapatalk

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'14 MB Nismo | Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs.
Betty Mods

vtec to vvel

When you said it revved up slowly, are you referring to the initial system self-check where the all the needles on the gauge clusters go to the other side? Or are you talking about when driving but feels like limp mode?

If the latter, I get this from time to time is bc my MAF sensors are dirty (OBD II sensor pulled MAF code), and turn off for 30 seconds and restart and runs like a beast again.

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MZ DAIZY

I wasn’t happy!

MZ DAIZY

TPS = Throttle Positioning Sensor.

Good point on the MAF. Thanks.

MZ DAIZY

Yes sir!

MZ DAIZY

This was after the “sweep” Car was running and just kept revving. Car was screaming! I was getting ready to push the off button when it hit redline and quickly dropped to idle.

Would a dirty MAF throw a CEL? No light and starting/running normally. Just don’t want to go through that again!

MZ DAIZY

Are you calling MZ DAIZY a slut?

SouthArk370Z

Not always. The first thing I'd do is check for any DTCs that may have been thrown.

Cleaning the MAFs is very easy - two screws and the MAF slides right out, spray it down with cleaner, let dry, re-install, do the other side. Takes less than 5 minutes per side. Considering all the problems MAFs can cause and how easy they are to clean, you might want to clean them once a year - or every oil change if you're real finicky (but that's probably overkill).

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BettyZ

Better than Cupcakez "die-a-virgin" Z..

Sent from my SM-G955U using Tapatalk

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'14 MB Nismo | Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs.
Betty Mods

370zBoyz

so your car rev'd up to red line all by itself?!

CALL A PRIEST

MZ DAIZY

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