Car REVING on its own as if Im steping on the pendle - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

240sx-pat · 01-21-2013, 03:52 PM

I got a weird issue guys. I dont know what happened but while driving and making a right turn and i put the gear in newtural and the shit was reving like crazy I had to turn off the car.he When I turned it back on its just reves as if Im steping on the peddle I need some help with thsi please!

Sorry for all the typos I need to get this thing up and running by tomorrow imma be out side

Veltall · 01-21-2013, 03:57 PM

check your cruise control module and cable. might be going ape-shit on its own and pulling the cable.

No 240.. No id · 01-21-2013, 03:59 PM

Check your throttle cable and disconnect the cruise control cable as well from the throttle body.

2.5T_/<ouki · 01-21-2013, 04:14 PM

Im going to vouch for the throttle cable being stuck.

MrSanchez925 · 01-21-2013, 04:38 PM

its not the throttle cable.

check your TPS and IACV. and clean your TB.

2.5T_/<ouki · 01-21-2013, 04:53 PM

Quote:

Originally Posted by MrSanchez925

its not the throttle cable.

check your TPS and IACV. and clean your TB.

How can you be so sure? This has happened to me before and the little sucker was stuck on an IC clamp.

240sx-pat · 01-21-2013, 04:57 PM

Quote:

Originally Posted by 2.5T_/<ouki

How can you be so sure? This has happened to me before and the little sucker was stuck on an IC clamp.

I ended up doing everything cleaning the IACV , INTAKE and the cable...I actually think it was the throttle being stuck now Ive got another issue. my Fuking radiator is leaking god dammmit !! Im going tired of this car!!

Perfect Balance · 01-21-2013, 05:03 PM

Or check for a huge vacuum leak. Sometimes the car will barely idle and other times it will rev like crazy.

MrSanchez925 · 01-21-2013, 05:44 PM

All issues I've.dealt with like that have always been either the iacv or tps.
A sticky cable usually will cause a.high steady idle. Not a bouncy one.

The cable would have to be pulling itself back and forth in order for the idle to bounce.

backccopy · 01-21-2013, 06:34 PM

Check your throttle cable and disconnect the cruise control cable as well from the throttle body.

cotbu · 01-22-2013, 02:59 AM

I'm not saying you guy's are stupid, just that you haven't seen everything and you answer reflect that.

What I think it is, The coolant temp senor, and it's detecting an over heat situation.
What usually happens is, first high temps, with visual and audible alerts, the audible alert is usually the revving of the engine, visual temp or the rpm gauge up and down in a rhythmic motion.(i know sounds stupid)

If the throttle cable was stuck why would it go up and down, it would be a straight rev to whatever.

Check codes, check for coolant leaks, if none pressure test the coolant system, there are some so repair!

Edit this morning, 3 240 all with sr's two s13 one s14. the symptom up and down idle rpm 900 to 2000. I still believe this to be coolant temp related. My only answer is global warming j/k

*brndck* · 01-24-2013, 04:37 PM

make sure your throttle plate screws are still in place.
they like to back out.

last time at the track, i was finishing a run and all of a sudden my rpms pegged. redline. instantly i killed the ignition, coasted off to the side and started the car again, as soon as it fired up, bam, redline. instantly i kill the ignition again and we push the car into the pits. pull some piping apart and find that the in the throttle body, where one of the two screws holds the actual throttle plate to the pin that it rotates on, has cracked and the screw is just sitting there inside my throttle body. Fuuuuuuuuuuu that could have been REALLY bad if it had been sucked in.

We ended up welding it, and it's been fine even since, but a large vacuum leak like that will cause your revs to climb excessively.

240sx-pat · 01-24-2013, 06:14 PM

Quote:

Originally Posted by brndck

make sure your throttle plate screws are still in place.
they like to back out.

last time at the track, i was finishing a run and all of a sudden my rpms pegged. redline. instantly i killed the ignition, coasted off to the side and started the car again, as soon as it fired up, bam, redline. instantly i kill the ignition again and we push the car into the pits. pull some piping apart and find that the in the throttle body, where one of the two screws holds the actual throttle plate to the pin that it rotates on, has cracked and the screw is just sitting there inside my throttle body. Fuuuuuuuuuuu that could have been REALLY bad if it had been sucked in.

We ended up welding it, and it's been fine even since, but a large vacuum leak like that will cause your revs to climb excessively.

That is the exact same thing that my car was doing.THE RPM just started to clime very quickly I freaked me and had me wondering what the #$#w was going on.I pulled over , shut off my car, turned it back on it just climed as soon as I turned it back on.I wasn't very far from my house I decided to drive it home in 4 gear where the RPM was ad a steady 3K.

Like I said the issue is resolved now, I'm still unsure what caused it since I cleaned both the IACV and the throttle plate/body with a shit load of carb cleaner. I did noticed that the Plate was slightly stuck but not too much I'm not sure if it was opened wide enough for the RPM to just shoot up like that.

01-21-2013, 03:52 PM	#1
240sx-pat Zilvia Member Join Date: Jan 2011 Location: DALLAS, TX Age: 38 Posts: 290 Trader Rating: (8) Feedback Score: 8 reviews	Car REVING on its own as if Im steping on the pendle I got a weird issue guys. I dont know what happened but while driving and making a right turn and i put the gear in newtural and the shit was reving like crazy I had to turn off the car.he When I turned it back on its just reves as if Im steping on the peddle I need some help with thsi please! Sorry for all the typos I need to get this thing up and running by tomorrow imma be out side

01-22-2013, 02:59 AM	#11
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	I'm not saying you guy's are stupid, just that you haven't seen everything and you answer reflect that. What I think it is, The coolant temp senor, and it's detecting an over heat situation. What usually happens is, first high temps, with visual and audible alerts, the audible alert is usually the revving of the engine, visual temp or the rpm gauge up and down in a rhythmic motion.(i know sounds stupid) If the throttle cable was stuck why would it go up and down, it would be a straight rev to whatever. Check codes, check for coolant leaks, if none pressure test the coolant system, there are some so repair! Edit this morning, 3 240 all with sr's two s13 one s14. the symptom up and down idle rpm 900 to 2000. I still believe this to be coolant temp related. My only answer is global warming j/k __________________ LoverTechnologies "Half Broken Things!" Last edited by cotbu; 01-24-2013 at 06:42 AM..

01-21-2013, 03:57 PM	#2
Veltall Zilvia Member Join Date: Oct 2008 Location: where its 0 degrees all day, everyday Posts: 269 Trader Rating: (4) Feedback Score: 4 reviews	check your cruise control module and cable. might be going ape-shit on its own and pulling the cable.

01-21-2013, 03:59 PM	#3
No 240.. No id Zilvia FREAK! Join Date: Jul 2011 Location: spaceship Posts: 1,340 Trader Rating: (35) Feedback Score: 35 reviews	Check your throttle cable and disconnect the cruise control cable as well from the throttle body.

01-21-2013, 04:14 PM	#4
2.5T_/<ouki Zilvia FREAK! Join Date: Oct 2011 Location: SoCal Posts: 1,150 Trader Rating: (13) Feedback Score: 13 reviews	Im going to vouch for the throttle cable being stuck.

01-21-2013, 04:38 PM	#5
MrSanchez925 Zilvia Junkie Join Date: Feb 2012 Location: Martinez, Ca Age: 36 Posts: 412 Trader Rating: (4) Feedback Score: 4 reviews	its not the throttle cable. check your TPS and IACV. and clean your TB.

01-21-2013, 05:03 PM	#8
Perfect Balance Zilvia Junkie Join Date: Nov 2006 Location: Virginia Age: 34 Posts: 397 Trader Rating: (1) Feedback Score: 1 reviews	Or check for a huge vacuum leak. Sometimes the car will barely idle and other times it will rev like crazy.

01-21-2013, 05:44 PM	#9
MrSanchez925 Zilvia Junkie Join Date: Feb 2012 Location: Martinez, Ca Age: 36 Posts: 412 Trader Rating: (4) Feedback Score: 4 reviews	All issues I've.dealt with like that have always been either the iacv or tps. A sticky cable usually will cause a.high steady idle. Not a bouncy one. The cable would have to be pulling itself back and forth in order for the idle to bounce.

01-21-2013, 06:34 PM	#10
backccopy Join Date: Jan 2013 Location: AZ,USA Age: 42 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Check your throttle cable and disconnect the cruise control cable as well from the throttle body.