22re Idle

scatter · 06-19-2007, 12:43 PM

Hi, I am a first time user. I have owned several toyota pickups. I have always made my own repairs as the 22re engine is very simple to work on. But I have a problem that has me stumped. My truck is a 1992 short wheel base 4wd 5sp transmission and 22re engine. When I am slowing down or coming to a stop with either the clutch disengaged or transmmission in neutral when I apply the brakes the engine idle starts "bouncing" up and down. When i release the brake all goes back to normal. My thoughts are maybe a vacuum sensor has gone bad, or another one of the million sensors or vacuum ports has failed. If anyone has any thoughts on the matter I'm all ears. Thank you for reading my question.

mrjohnwayne · 06-19-2007, 01:05 PM

could be just a vacuum leak. I'd check the line/checkvalve that goes to the brake booster. Not sure though. Never messed with any yotas. sorry

knj27 · 02-26-2008, 04:14 PM

I have the exact same problem with my 93 22re. In fact, one of the reasons I signed up for this forum was that I was hoping to get advice on that very problem. I've also heard that it is something related to vacuum. If anyone has any more specific advice, that would be great.

jeremiah · 05-12-2009, 08:42 AM

hey i have a 1994 toyota and i had the exact same problem. i changed out my mass air flow sensor and it fixed the problem. just figured i would try to help out.

eponator · 05-18-2009, 04:33 PM

Hey Scatter and knj27, do these symptoms pop up when the brake is depressed with the vehicle stationary and at idle? You mentioned it only did it during deceleration but I'm wondering if it does it at a stand still as well.

I would definitely check the brake booster vaccum line and the brake booster canister itself. A leak here could result in these symptoms. A good trick is to spray them down with Carb cleaner while the engine is running. If you notice the engine suddenly rev then you found your leak.

If it were the MAF acting up I would think the problem would show itself more often than just when the brake is depressed. MAF sensors for these guys aren't cheap ($225 if I recall correctly from Autozone purchased about a month ago... Kragen and Pep boys didn't have them in stock anywhere).

I am pretty sure this is a vacuum issue so double check all those lines first. Hope this helps!

06-19-2007, 12:43 PM	#1
scatter Junior Member Join Date: Jun 2007 Posts: 1	22re Idle Hi, I am a first time user. I have owned several toyota pickups. I have always made my own repairs as the 22re engine is very simple to work on. But I have a problem that has me stumped. My truck is a 1992 short wheel base 4wd 5sp transmission and 22re engine. When I am slowing down or coming to a stop with either the clutch disengaged or transmmission in neutral when I apply the brakes the engine idle starts "bouncing" up and down. When i release the brake all goes back to normal. My thoughts are maybe a vacuum sensor has gone bad, or another one of the million sensors or vacuum ports has failed. If anyone has any thoughts on the matter I'm all ears. Thank you for reading my question.

06-19-2007, 01:05 PM	#2
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,710	could be just a vacuum leak. I'd check the line/checkvalve that goes to the brake booster. Not sure though. Never messed with any yotas. sorry __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

05-18-2009, 04:33 PM	#5
eponator Senior Member Join Date: Nov 2008 Location: West Covina, Ca Posts: 235	Hey Scatter and knj27, do these symptoms pop up when the brake is depressed with the vehicle stationary and at idle? You mentioned it only did it during deceleration but I'm wondering if it does it at a stand still as well. I would definitely check the brake booster vaccum line and the brake booster canister itself. A leak here could result in these symptoms. A good trick is to spray them down with Carb cleaner while the engine is running. If you notice the engine suddenly rev then you found your leak. If it were the MAF acting up I would think the problem would show itself more often than just when the brake is depressed. MAF sensors for these guys aren't cheap ($225 if I recall correctly from Autozone purchased about a month ago... Kragen and Pep boys didn't have them in stock anywhere). I am pretty sure this is a vacuum issue so double check all those lines first. Hope this helps! __________________ '99 F350 5.4L crewcab Longbed

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1987 Silverado 350 TBI Auto., hard start, won't idle	87Silverado	Chevy Truck Forum	8	07-08-2007 07:20 PM
03 GMC Sonoma Rough Idle	mstngklr77	GMC Truck Forum	1	05-02-2007 07:37 AM
Idle and Tranny problems	Frogestil	Ford Truck Forum	0	12-07-2006 05:40 PM
Idle speed in 22re	mochester	Toyota Truck Forum	3	06-11-2006 10:52 PM
99 Suburban Idle Problem	Myles	Chevy Truck Forum	3	08-05-2005 10:24 PM

02-26-2008, 04:14 PM	#3
knj27 Junior Member Join Date: Feb 2008 Posts: 3	I have the exact same problem with my 93 22re. In fact, one of the reasons I signed up for this forum was that I was hoping to get advice on that very problem. I've also heard that it is something related to vacuum. If anyone has any more specific advice, that would be great.

05-12-2009, 08:42 AM	#4
jeremiah Junior Member Join Date: May 2009 Posts: 6	hey i have a 1994 toyota and i had the exact same problem. i changed out my mass air flow sensor and it fixed the problem. just figured i would try to help out.