JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Engine & Transmission Engine Revs hunting on Idle

Engine Revs hunting on Idle

Engine Revs hunting on Idle

S
Banned
1,153
16-11-2019, 03:25 PM
#1
Evening all,

the car has done this since i bought it, ive cleaned the TB and reset the ECU and it continued to hunt on idle.

it sits at around 900rpm for a while and then the revs drop a little bit and the lights dim (if on) and the revs almost immediatley pick up and then it idles at 1000rpm for a while before returning to 900.

A video is below (Ignore the warning light its because i used the wiring from the parcel shelf light for the boot spoiler and i havnt bothered to sort it)

my question is: Is this normal idle behavior for a warm 1G-FE or is there a problem?

<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid77.photobucket.com%2Falbums%2Fj60%2Fdopple-ganger%2FVIDEO0025.mp4">
S
16-11-2019, 03:25 PM #1

Evening all,

the car has done this since i bought it, ive cleaned the TB and reset the ECU and it continued to hunt on idle.

it sits at around 900rpm for a while and then the revs drop a little bit and the lights dim (if on) and the revs almost immediatley pick up and then it idles at 1000rpm for a while before returning to 900.

A video is below (Ignore the warning light its because i used the wiring from the parcel shelf light for the boot spoiler and i havnt bothered to sort it)

my question is: Is this normal idle behavior for a warm 1G-FE or is there a problem?

<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid77.photobucket.com%2Falbums%2Fj60%2Fdopple-ganger%2FVIDEO0025.mp4">

S
Banned
1,153
16-11-2019, 03:26 PM
#2
hopefully this link will work

[Image: th_VIDEO0025.jpg]
S
16-11-2019, 03:26 PM #2

hopefully this link will work

[Image: th_VIDEO0025.jpg]

Sparkystav
Administrator
14,683
16-11-2019, 03:45 PM
#3
have you got the aircon on?

i would bet its the clutch dropping in and out, its supposed to do that

OutlawJapClub Admin Team
Sparkystav
16-11-2019, 03:45 PM #3

have you got the aircon on?

i would bet its the clutch dropping in and out, its supposed to do that


OutlawJapClub Admin Team

S
Banned
1,153
16-11-2019, 03:55 PM
#4
yeah the aircon is almost always on lol

EXCELLENT i was worrying you were going to say its an expensive problem!
S
16-11-2019, 03:55 PM #4

yeah the aircon is almost always on lol

EXCELLENT i was worrying you were going to say its an expensive problem!

S
Banned
1,153
16-11-2019, 03:55 PM
#5
Thanks alot btw stav Big Grin
S
16-11-2019, 03:55 PM #5

Thanks alot btw stav Big Grin

Sparkystav
Administrator
14,683
16-11-2019, 04:05 PM
#6
just try it mate, turn the aircon off and it shouldnt happen then.

the ecu does attempt to compensate but it cant be perfect

OutlawJapClub Admin Team
Sparkystav
16-11-2019, 04:05 PM #6

just try it mate, turn the aircon off and it shouldnt happen then.

the ecu does attempt to compensate but it cant be perfect


OutlawJapClub Admin Team

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