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When coming to a stop at a light, my Jeep turns.

Tiny
ELVINLBC
  • MEMBER
  • 2006 JEEP COMMANDER
  • 71,000 MILES
When coming to a stop at a light, my jeep turns off. I noticed RPMs are at 500 on idle, and dip down to 400 and back up to 600, before stopping at 500 RPMs when making a stop. When I come to a stop, and it turns off it drops to 0 RPMs. Ive changed the Idle Air Control And Throttle Sensor. NO ERROR CODES EITHER.
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Friday, February 15th, 2013 AT 3:02 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Have you checked for vacuum leaks?
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Friday, February 15th, 2013 AT 3:03 AM
Tiny
ELVINLBC
  • MEMBER
  • 6 POSTS
No I haven't. I lack knowledge when it comes to cars. And get most information online and youtube. My mechanic said to wait for the check engine light to come on, but its my wifes car and Id rather not wait till it completely stops. I will check for vacuum leaks tomorrow. Any other tips?
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Friday, February 15th, 2013 AT 3:07 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
You have to be careful, but I use carb cleaner and spray it around the intake and all vacuum hoses. If there is a leak, the RPM's will increase. Start the engine, let it idle, and then check for leaks. If it won't stay running, have a helper slightly touch the throttle to keep it running and at a steady speed.

As I mentioned, you need to be careful with the carb cleaner. It is extremely flammable and if it hits an exhaust manifold or anything that is extremely hot, it can catch fire. Since this is the first time for you, keep a fire extinguisher near by.

I don't mean to scare the heck out of you. I just have to warn you.
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+1
Friday, February 15th, 2013 AT 3:12 AM
Tiny
ELVINLBC
  • MEMBER
  • 6 POSTS
Major thanks and I hope its something simple. I'm more then comfortable with the steps you provided. I will most definitely try that first thing in the morning and hopefully by this time tomorrow night the problem will be solved. Thanks again you definitely helped and I feel like I have a good start
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Friday, February 15th, 2013 AT 3:17 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Glad to help. Let me know how things go for you.
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Friday, February 15th, 2013 AT 3:20 AM
Tiny
ELVINLBC
  • MEMBER
  • 6 POSTS
Okay Jacob so as of right now I checked for vacuum leaks around the air filter vacuum lines and intake hose what the carb cleaner and did not notice any difference. Or anything that would make me think that there was a rip, tear or anything. I really think I'm stuck. Any other tips or advice would be greatly appreciatedThanks
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Saturday, February 16th, 2013 AT 1:12 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
THERE ARE 2 ENGINES AVAILABLE FOR YOUR RIG.........I DIDN'T KNOW WHICH.........

I CHOSE THE "BIGGER ONE"......WENT TO THIS SITE......FOUND THISIF I WAS WRONG JUST CHANGE THE INFO THEN SEARCH FOR "IAC"

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_idle-air-control-valve-bwd_20473500-p?searchTerm=iac

THIS PUPPY, HERE, IS WHAT CONTROLS IDLE (IDLE AIR CONTROL)....IT HAS A PLUNGER IN IT THAT CONSTANTLY MOVES, ALLOWING ITSY-BITSY AMOUNTS OF AIR TO BYPASS THE CLOSED THROTTLE VALVE TO MIX WITH THE FUEL FROM THE INJECTORS

I'M PASTING IN MY EXPERIENCE WITH THE WIFEY'S '03 FORD ESCAPE....ROBBED IT FROM ANOTHER ANSWER I GAVE......BACK WHEN I USED LOWER CASE LETTERING!.......SAVE ME FROM A BUNCH OF HUNTING AND PECKING.

Our Escape would idle low, then it got to point it would die when you stopped.

Revving + holding brake was only way to keep it running. I took it to fellow R/C airplane pilot, he doubles as a S.C. State HWY DEPT mechanic.

When I got to his house, he was repairing a tractor. I told him my sob story. The Escape was still barely running, I raised the hood.

He said, (and I quote).............."It could be the IDLE AIR CONTROL (IAC)", as he pointed to it, and emphasized it with a sharp rap, using the wrench in his hand.

It straightened right up, and ran damn good!!!

..............That was a 15/16 Craftsman wrench, box end, kinda a medium rap!!!

YES, I visited parts store and replaced it..............Hope this helps

WE TOOK THE IAC OFF AND CLEANED IT, IT SEEMED FINE, BUT JUST BECAUSE THE ENGINE HAD OVER 100,000 MILES ON IT, I WENT AHEAD AND REPLACED IT (PREVENTATIVE MAINTENANCE). I FIGGERED IT HAD BEEN MOVING AND WEARING FOR A LONG TIME

THIS IS THE WIFE'S RIG, SO THAT WAS THE BIG FACTOR!----I TAKE NO CHANCES---SHE'LL WHOOP MY BUTT!

THIS IS A VERY SIMPLE THING TO CLEAN OR REPLACE.......NO NEED TO TAKE IT TO THE STEALERSHIP!I "MIGHT" EVEN BE ABLE TO SHOW YOU HOW TO SAVE A BUNDLE, SHOULD YOU DECIDE TO REPLACE IT

ONE OF THESE WOULD AID YOU IN THE FUTURE

https://www.2carpros.com/questions/2007-ford-taurus-tune-up

KEEP US POSTED

THE MEDIC
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Saturday, February 16th, 2013 AT 4:14 AM
Tiny
ELVINLBC
  • MEMBER
  • 6 POSTS
Thanks CJ MEDEVAC. But Ive already changed the IAC And the Throttle Position Switch, cleaned the throttle body and checked for vacuum leaks. Any other ideas?
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Saturday, February 16th, 2013 AT 4:44 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
MAYBE USE THE 15/16 WRENCH AND SMACK EVERYTHING ELSE???....LOL!!!

SORRY 'BOUT ALL I HAD.......I'M A CJ KINDA GUY....THIS NEW CRAP BAFFLES ME

..........DID YOU CLEAN THE BACKSIDE OF THE THROTTLE PLATE WELL???.......DID YOU REPLACE THIS?

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_throttle-position-sensor-bwd_18480648-p?searchTerm=tps

EVER THOUGHT ABOUT "RETRO-JEEPIN"???

I'M STILL BACK THERE........THE MORE I SEE THE MODERN PROBLEMS.....I'LL PROBABLY REMAIN BACK THERE

I SORTA FIGURE, I CAN CONTINUE TO KEEP MINE UP----EVEN BUILD ANOTHER ONE---STILL REMAIN MEGA BUCKS BEHIND BUYING A NEW ONE----NO PAYMENTS---EZ TO MAINTAIN---FEW PLASTIC PARTS---MOSTLY MECHANICAL--NOT ELECTRIC MOVING PARTS

MPGs?????---WELL, I DO PRETTY DECENT WITH THE CARBS..........I FIGGER I CAN BUY THE "EXTRA" FUEL MINE CONSUMES WITH THE MONEY I SAVE, HAVING NO CAR PAYMENTS!

WILLY IS 67 AND MR. JEEP IS 37 YEARS YOUNG.....THEY STILL LOOK AND PERFORM WELL, IF SOMETHING WORKS, WHY CHANGE IT!!!

THE ONLY OTHER DIRECT ADVICE I MIGHT OFFER IS----DON'T MONKEY WITH ADJUSTMENT SCREWS!!!!!!

THE VEHICLE WAS SET UP WITH A "BASE IDLE"---KINDA THE IDLE THAT THE COMPUTER CALIBRATES ALL OF THE OTHER STUFF TO (THIS IS A KINDERGARTEN EXPLANATION)IF YOU CHANGE A SETTING, THE OTHER STUFF MAY BE EXPONENTIALLY AFFECTED TO................COMPOUNDING THE PROBLEM YOU HAVE NOW

OK--IF YOU NEED TO BUY SOMETHING, NOW OR LATER---THIS IS THE LAST THING I CAN OFFER

IF THIS STORE IS IN YOUR GRASP---OR YOU CAN USE THE SAME SORTA PROCEDURE WITH ANOTHER STORE

"A124" WAS WORKING YESTERDAY!---IS MUCH BETTER THAN THE PROMO THEY SUPPLY AT THE TOP OF THEIR PAGE

I KNOW THESE MODERN CYBER PLASTIC PARTS WILL RIP YOU A NEW ONE.....SEE IF THIS LINK HELPS YOU GET OVER ON THEM!

https://www.2carpros.com/questions/2001-dodge-neon-milage-just-want-put-fliuds-their-locations

SORRY THAT I WAS OF NO MORE ASSISTANCE---MAYBE "J and N" HAS MORE UP HIS SLEEVE

THE MEDIC

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Saturday, February 16th, 2013 AT 5:19 AM

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