Manual Transmission acting like an automatic?

farmosh203 · 12-05-2009, 10:01 PM

Today when I was pulling out of a parking lot, I put my car in first gear and started it up. When I took my foot off the gas pedal, I was expecting the car to slow down, but instead the car kept moving like an automatic transmission car. I stopped the car and put it in neutral. I then put the car into first gear and expected the car to stall when I did not hit the gas pedal. The car started moving like an automatic car, hitting the gas for me.

I drove home and tested the car in my neighborhood (about a 5 minute drive). The car was acting normal and I could not reproduce the problem.

Has anyone else had this happen?

zfokaiz · 12-05-2009, 10:09 PM

I can do that in my z too, and the jeep i used to have.

m4a1mustang · 12-05-2009, 10:12 PM

Cold start, I'm guessing?

farmosh203 · 12-05-2009, 10:13 PM

Quote:

I can do that in my z too, and the jeep i used to have.

Is it a problem if the car won't stall from a complete stop, you shift into first gear, and release the brake?

farmosh203 · 12-05-2009, 10:14 PM

Quote:

Cold start, I'm guessing?

Yeah, I had the car turned off for about 7 hours and it happened right when I turned the car on.

dad · 12-05-2009, 10:15 PM

^That's what it sounds like!
See if it does the same thing after the car has warmed up.

farmosh203 · 12-05-2009, 10:17 PM

Quote:

^That's what it sounds like!
See if it does the same thing after the car has warmed up.

The problem did not happen when my car had warmed up on the way home. Is it normal for the car to not stall from a cold start?

m4a1mustang · 12-05-2009, 10:18 PM

Quote:

Originally Posted by farmosh203

Yeah, I had the car turned off for about 7 hours and it happened right when I turned the car on.

On a cold start the ECU bumps the idle RPM higher than when warm... up to around 1k rpm or so. That explains why the car continued moving when you let off the throttle... the higher idle was pulling it along.

zfokaiz · 12-05-2009, 10:19 PM

Quote:

Originally Posted by farmosh203

Is it a problem if the car won't stall from a complete stop, you shift into first gear, and release the brake?

after the other cold start comments I realized that i am doing this right out of the driveway.
but it only does it when i ease off the clutch in 1st gear really slowly w/ no gas.

m4a1mustang · 12-05-2009, 10:20 PM

Quote:

Originally Posted by farmosh203

Is it a problem if the car won't stall from a complete stop, you shift into first gear, and release the brake?

Nope.

farmosh203 · 12-05-2009, 10:21 PM

Thanks for the replies, I'm glad my car isn't defective.

Red370 · 12-05-2009, 10:31 PM

lol, yeah, cold start, engine revs, can go into gear without applying throttle.

dad · 12-05-2009, 10:32 PM

I gave you a rep point for thanking us! Not that many people say that, after you try to help them!

12-05-2009, 10:01 PM	#1 (permalink)
farmosh203 Base Member Join Date: Nov 2009 Location: Arizona Posts: 24 Drives: 09 Nissan 370Z sport Rep Power: 15	Manual Transmission acting like an automatic? Today when I was pulling out of a parking lot, I put my car in first gear and started it up. When I took my foot off the gas pedal, I was expecting the car to slow down, but instead the car kept moving like an automatic transmission car. I stopped the car and put it in neutral. I then put the car into first gear and expected the car to stall when I did not hit the gas pedal. The car started moving like an automatic car, hitting the gas for me. I drove home and tested the car in my neighborhood (about a 5 minute drive). The car was acting normal and I could not reproduce the problem. Has anyone else had this happen?

12-05-2009, 10:12 PM	#3 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Cold start, I'm guessing? __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

12-05-2009, 10:31 PM	#12 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 295	lol, yeah, cold start, engine revs, can go into gear without applying throttle. __________________ 2011 Mustang 5.0 \| 3.55's \| Lethal Performance off road H-Pipe \| Magnaflow Muffler Delete \| JLT CAI/Bama tuned 417whp/ 404 ft/lbs

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12-05-2009, 10:09 PM	#2 (permalink)
zfokaiz Base Member Join Date: Sep 2009 Location: Cape Carteret Posts: 98 Drives: 09 370z 6spd Rep Power: 15	I can do that in my z too, and the jeep i used to have.

12-05-2009, 10:15 PM	#6 (permalink)
dad Grand Prix of Endurance Join Date: Nov 2008 Location: Tennessee Posts: 3,476 Drives: Mulsanne Straight Rep Power: 25	^That's what it sounds like! See if it does the same thing after the car has warmed up.

12-05-2009, 10:21 PM	#11 (permalink)
farmosh203 Base Member Join Date: Nov 2009 Location: Arizona Posts: 24 Drives: 09 Nissan 370Z sport Rep Power: 15	Thanks for the replies, I'm glad my car isn't defective.

12-05-2009, 10:32 PM	#13 (permalink)
dad Grand Prix of Endurance Join Date: Nov 2008 Location: Tennessee Posts: 3,476 Drives: Mulsanne Straight Rep Power: 25	I gave you a rep point for thanking us! Not that many people say that, after you try to help them!