5S-FE MK2 Non-Turbo Engine Nasty High Idle=(Please Help!

DZ91MR2 · 01-04-2010, 03:21 AM

(I accidently posted this in the MK1 Thread My Bad.)

My 91 MR2 NA has a nasty Idle unlike the others that have posted. Cold start is about 2500-2600rpms warmup will hang around 2000. Sometimes will drop down to 1500ish then goes right back to 2000 after a few moments. I tightened the Idle screw the whole way and I checked the Vacuum lines (Not saying there isnt a leak(To cold out to really get in there) but I didnt really see anything) I was just wondering what some other common problems could be thats causing it to act this way.

And if somone has a picture of where the Vacuum lines are, could you post please? I just wanna make sure im looking at the right thing. I know my way around an engine but it never hurts to be 100%.

Thanks!

PHOENIX · 01-04-2010, 06:24 AM

Clean your throttle body butterfly and remove your IAC and clean it up. There is a hole that sometimes gets plugged. This is usually the problem.

lmp9002002 · 01-04-2010, 12:21 PM

Quote:

Originally Posted by PHOENIX

Clean your throttle body butterfly and remove your IAC and clean it up. There is a hole that sometimes gets plugged. This is usually the problem.

Is there like a step-by-step guide on how exactly to do this and what to use? because i have a similar problem, though not as severe. My car likes to idle around 2k cold and about 1300 when warmed up and if that's the solution to his problem i think it could help me too..

jeffbeezy73 · 01-04-2010, 12:51 PM

I agree with PHOENIX. Ive had the same problems. Its not that had to do at all. I took it apart and cleaned it with a brake cleaner type and put it back 2gether and problem solved! Its a small inlet hole on the bottom of the throttle body. It has a plug connected to the valve. Remove the valve and clean it.

DZ91MR2 · 01-04-2010, 01:14 PM

I heard about it possibly being the IAC but when I went to look for it I couldnt find it. yeah I know right. Could anyone post a pic of its location? I tried to google it but it just came up with pics of it off, not the actual location of it on the throttle body.

DZ91MR2 · 01-04-2010, 03:56 PM

Also I wanted to add that sense it started this High Idle The intake also sounds like a vacuum cleaner the sucking is noticably loud and only does this in idle. It stops when I give it gas. could that be linked to the IAC and if so what would be the best way to clean it?

jeffbeezy73 · 01-04-2010, 07:44 PM

Quote:

Originally Posted by DZ91MR2

I heard about it possibly being the IAC but when I went to look for it I couldnt find it. yeah I know right. Could anyone post a pic of its location? I tried to google it but it just came up with pics of it off, not the actual location of it on the throttle body.

[IMG]www.toyotanation.com/forum/showthread.php?t=1...[/IMG]

bencdoucet · 01-04-2010, 11:43 PM

i had the same problem at one time my car would idle at 2000 cold and 1600-1500 warm. first check for vacum leaks, clean out the throttle body/seafoam intake, and check the iac (pull the intake tube off the throttle body there is a square-ish** hole that is sucking, put ur finger over it while car is running if working properly the car should act like its dying), then you pull am2 and ecu fuses in frunk for few seconds which resets it. also check your temp guage at warm if not in the middle its not right change the thermostat i did all this and my car now idles at 1050 when warm not perfect but much better than before not saying will work for u but did for me

DZ91MR2 · 01-05-2010, 03:05 AM

ok well sense you all seem to be stating all the same things im going to hope to god thats all that needs to be done and grab some cleaner and do it. What you would best recomend to use to clean it with? like something under 10$ lol

lmp9002002 · 01-05-2010, 11:47 PM

Quote:

Originally Posted by jeffbeezy73

New forums up and all ours ! - Toyota Forums :: Toyota Nation

pic/link didn't work.

bencdoucet · 01-06-2010, 12:10 AM

any carb cleaner will work for throttle body and SeaFoam for intake use through vacum line

DZ91MR2 · 01-06-2010, 03:23 PM

so I went to go clean it today disconnected everything took off the throttle body only to find there where 3 black hoses clamped to the IACV. I took pliers to each clamp and could NOT get those hoses off to save my life. I was down right ready to cut them off but there was not enough slack for me to reconnect them again after I would cut them so Idk what to do now...

ailser · 03-04-2010, 04:41 AM

sounds good to me

328FTW · 03-04-2010, 05:19 AM

Quote:

Originally Posted by DZ91MR2

so I went to go clean it today disconnected everything took off the throttle body only to find there where 3 black hoses clamped to the IACV. I took pliers to each clamp and could NOT get those hoses off to save my life. I was down right ready to cut them off but there was not enough slack for me to reconnect them again after I would cut them so Idk what to do now...

Yeeeeah that can happen I cut mine off with a dremel and ran pretty coloured hose instead. If you do get them off turf those clamps and get better stainless ones with the turn head on them far far far better I spent $40 in clamps for all my race motors pure bliss to have clamps that work right worth the cost.

TomsMR2 · 03-04-2010, 06:01 AM

the toyota clamps are excellent. theres no reason to change them. worm gear clamps damage hoses.

old hoses stick on nipples. you have to get a pick and break them free. nothing to do with clamps.

328FTW · 03-04-2010, 06:12 AM

Quote:

Originally Posted by TomsMR2

the toyota clamps are excellent. theres no reason to change them. worm gear clamps damage hoses.

I personally find them hopeless and most of them are bent up from previous owners trying to undo them with what looks like a large rock of some kind.

lmp9002002 · 03-04-2010, 12:26 PM

Quote:

Originally Posted by 328FTW

I personally find them hopeless and most of them are bent up from previous owners trying to undo them with what looks like a large rock of some kind.

rofl

goddom · 03-11-2010, 12:55 AM

I second that! Mine are all rusty and they can be a pain to get to.

In regards to high idle, I think mine is due to a bad throttle opener. I got a new one on, but I was running late so I didn't get a chance to turn on the car. Mine was idling at about 2500 rpms, and then will settle down to 1300-1500 which is similar symptom when the throttle opener is bad.

DZ91MR2 · 03-11-2010, 08:41 PM

Quote:

Originally Posted by goddom

I second that! Mine are all rusty and they can be a pain to get to.

In regards to high idle, I think mine is due to a bad throttle opener. I got a new one on, but I was running late so I didn't get a chance to turn on the car. Mine was idling at about 2500 rpms, and then will settle down to 1300-1500 which is similar symptom when the throttle opener is bad.

That is exactly what mine is doing right now. and then on top of it sometimes it pulse revs up and down if I smash the throttle thought it stops.

Kayo92MR2 · 03-11-2010, 11:02 PM

Same exact problem guys, i posted a seperate thread with not so much luck, This is like stumbling onto a gold mine = ) Ill try all the things you guys mentioned and post my findings.

01-04-2010, 03:21 AM	#1 (permalink)
DZ91MR2 ~Deuces~ Join Date: Jan 2010 Location: PA Posts: 130 Thanks: 6 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	Nasty High Idle=(Please Help! (I accidently posted this in the MK1 Thread My Bad.) My 91 MR2 NA has a nasty Idle unlike the others that have posted. Cold start is about 2500-2600rpms warmup will hang around 2000. Sometimes will drop down to 1500ish then goes right back to 2000 after a few moments. I tightened the Idle screw the whole way and I checked the Vacuum lines (Not saying there isnt a leak(To cold out to really get in there) but I didnt really see anything) I was just wondering what some other common problems could be thats causing it to act this way. And if somone has a picture of where the Vacuum lines are, could you post please? I just wanna make sure im looking at the right thing. I know my way around an engine but it never hurts to be 100%. Thanks!

03-04-2010, 06:01 AM	#15 (permalink)
TomsMR2 Still not heraldo. Join Date: Feb 2005 Location: Pineapple under the sea Posts: 4,911 Thanks: 18 Thanked 406 Times in 303 Posts Blog Entries: 1 iTrader Rating: (4/100% )	the toyota clamps are excellent. theres no reason to change them. worm gear clamps damage hoses. old hoses stick on nipples. you have to get a pick and break them free. nothing to do with clamps. __________________ Science fact: If you took all the veins from your body and laid them end to end, you would die.

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01-04-2010, 06:24 AM	#2 (permalink)
PHOENIX Beams Owners Group Join Date: Mar 2005 Location: On Hiatus....... Posts: 9,266 Thanks: 92 Thanked 292 Times in 224 Posts Blog Entries: 1 My Google Map iTrader Rating: (49/100% )	Clean your throttle body butterfly and remove your IAC and clean it up. There is a hole that sometimes gets plugged. This is usually the problem.

01-04-2010, 12:51 PM	#4 (permalink)
jeffbeezy73 vroooom!!,,piish Join Date: Jun 2007 Location: Fort Worth, Texas Posts: 250 Thanks: 16 Thanked 3 Times in 3 Posts iTrader Rating: (21/96% )	I agree with PHOENIX. Ive had the same problems. Its not that had to do at all. I took it apart and cleaned it with a brake cleaner type and put it back 2gether and problem solved! Its a small inlet hole on the bottom of the throttle body. It has a plug connected to the valve. Remove the valve and clean it.

01-04-2010, 01:14 PM	#5 (permalink)
DZ91MR2 ~Deuces~ Join Date: Jan 2010 Location: PA Posts: 130 Thanks: 6 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	I heard about it possibly being the IAC but when I went to look for it I couldnt find it. yeah I know right. Could anyone post a pic of its location? I tried to google it but it just came up with pics of it off, not the actual location of it on the throttle body.

01-04-2010, 03:56 PM	#6 (permalink)
DZ91MR2 ~Deuces~ Join Date: Jan 2010 Location: PA Posts: 130 Thanks: 6 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	Also I wanted to add that sense it started this High Idle The intake also sounds like a vacuum cleaner the sucking is noticably loud and only does this in idle. It stops when I give it gas. could that be linked to the IAC and if so what would be the best way to clean it?

01-04-2010, 11:43 PM	#8 (permalink)
bencdoucet MR. 2...I wanna go fast!! Join Date: Jul 2009 Location: Baton Rouge, La Posts: 49 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (1/100% )	i had the same problem at one time my car would idle at 2000 cold and 1600-1500 warm. first check for vacum leaks, clean out the throttle body/seafoam intake, and check the iac (pull the intake tube off the throttle body there is a square-ish** hole that is sucking, put ur finger over it while car is running if working properly the car should act like its dying), then you pull am2 and ecu fuses in frunk for few seconds which resets it. also check your temp guage at warm if not in the middle its not right change the thermostat i did all this and my car now idles at 1050 when warm not perfect but much better than before not saying will work for u but did for me

01-05-2010, 03:05 AM	#9 (permalink)
DZ91MR2 ~Deuces~ Join Date: Jan 2010 Location: PA Posts: 130 Thanks: 6 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	ok well sense you all seem to be stating all the same things im going to hope to god thats all that needs to be done and grab some cleaner and do it. What you would best recomend to use to clean it with? like something under 10$ lol

01-06-2010, 12:10 AM	#11 (permalink)
bencdoucet MR. 2...I wanna go fast!! Join Date: Jul 2009 Location: Baton Rouge, La Posts: 49 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (1/100% )	any carb cleaner will work for throttle body and SeaFoam for intake use through vacum line

01-06-2010, 03:23 PM	#12 (permalink)
DZ91MR2 ~Deuces~ Join Date: Jan 2010 Location: PA Posts: 130 Thanks: 6 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	so I went to go clean it today disconnected everything took off the throttle body only to find there where 3 black hoses clamped to the IACV. I took pliers to each clamp and could NOT get those hoses off to save my life. I was down right ready to cut them off but there was not enough slack for me to reconnect them again after I would cut them so Idk what to do now...

03-04-2010, 04:41 AM	#13 (permalink)
ailser No Skills Join Date: Feb 2010 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	sounds good to me

03-11-2010, 12:55 AM	#18 (permalink)
goddom WEEEEEEEE!!!!!!! Join Date: Apr 2007 Location: Ann Arbor, MI Posts: 218 Thanks: 12 Thanked 13 Times in 10 Posts My Google Map iTrader Rating: (4/100% )	I second that! Mine are all rusty and they can be a pain to get to. In regards to high idle, I think mine is due to a bad throttle opener. I got a new one on, but I was running late so I didn't get a chance to turn on the car. Mine was idling at about 2500 rpms, and then will settle down to 1300-1500 which is similar symptom when the throttle opener is bad.

03-11-2010, 11:02 PM	#20 (permalink)
Kayo92MR2 Trial & Error Join Date: Feb 2010 Location: Minnesota Posts: 181 Thanks: 2 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	Same exact problem guys, i posted a seperate thread with not so much luck, This is like stumbling onto a gold mine = ) Ill try all the things you guys mentioned and post my findings.