Idle setting on 4.0 TJ
03-03-2004, 01:48 PM
#1
Guest
Posts: n/a
Idle setting on 4.0 TJ
My idle has decided to run amok. My Jeep mechanic guru has swapped out the
"idle air control motor" and it seems to make no difference. The engine will
idle properly in the 6-700rpm range for a while then it will surge to anywhere
between 1000 and 2000rpm and remain there indefinitely. The only way I have
been able to limit the rpms to a manageble range is by blocking off a major
part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
problem?
tia dw
"idle air control motor" and it seems to make no difference. The engine will
idle properly in the 6-700rpm range for a while then it will surge to anywhere
between 1000 and 2000rpm and remain there indefinitely. The only way I have
been able to limit the rpms to a manageble range is by blocking off a major
part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
problem?
tia dw
03-03-2004, 02:24 PM
#2
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
I would guess a dirty connection on the TPS. Maybe give it's plug and
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
03-03-2004, 02:24 PM
#3
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
I would guess a dirty connection on the TPS. Maybe give it's plug and
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
03-03-2004, 02:24 PM
#4
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
I would guess a dirty connection on the TPS. Maybe give it's plug and
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
socket a quick clean with WD40.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
03-03-2004, 06:47 PM
#8
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
If all else fails cut a tin can material to cover the ports under
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
03-03-2004, 06:47 PM
#9
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
If all else fails cut a tin can material to cover the ports under
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
03-03-2004, 06:47 PM
#10
Guest
Posts: n/a
Re: Idle setting on 4.0 TJ
If all else fails cut a tin can material to cover the ports under
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw
the step motor. and set the idle via the throttle butterfly stop screw.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Dalewhite wrote:
>
> My idle has decided to run amok. My Jeep mechanic guru has swapped out the
> "idle air control motor" and it seems to make no difference. The engine will
> idle properly in the 6-700rpm range for a while then it will surge to anywhere
> between 1000 and 2000rpm and remain there indefinitely. The only way I have
> been able to limit the rpms to a manageble range is by blocking off a major
> part of the "idle air control passage inlet" (ref. page 14-45, SERVICE MANUAL ,
> JEEP WRANGLER). Can anyone suggest a procedure to isolate and identify the
> problem?
> tia dw