'93 JGC V-8 Stumbles At Low Speed
12-08-2003, 11:34 AM
#1
Guest
Posts: n/a
'93 JGC V-8 Stumbles At Low Speed
My '93 JGC V-8 has a problem with dying at low speed. It can't take
acceleration, then getting off the throttle. The RPM will drop to
zero, then the engine will catch or die. Happens when starting too.
In the old days I would suspect the dash pot, but with fuel injection
I don't think there is anything similar to that to prevent a too rapid
reduction in throttle. Gets to be very annoying with several
re-starts, and the engine dying while trying to negotiate a parking
lot. No problem at cruising speed.
----
acceleration, then getting off the throttle. The RPM will drop to
zero, then the engine will catch or die. Happens when starting too.
In the old days I would suspect the dash pot, but with fuel injection
I don't think there is anything similar to that to prevent a too rapid
reduction in throttle. Gets to be very annoying with several
re-starts, and the engine dying while trying to negotiate a parking
lot. No problem at cruising speed.
----
12-08-2003, 01:24 PM
#2
Guest
Posts: n/a
Re: '93 JGC V-8 Stumbles At Low Speed
Hi ----,
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
12-08-2003, 01:24 PM
#3
Guest
Posts: n/a
Re: '93 JGC V-8 Stumbles At Low Speed
Hi ----,
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
12-08-2003, 01:24 PM
#4
Guest
Posts: n/a
Re: '93 JGC V-8 Stumbles At Low Speed
Hi ----,
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
The idle step motor is responsible for setting the idle speed to
what the computer dictates. Yours will look similar to the one that's on
this six cylinder throttle body:
http://members.***.net/wilsond/tb/tb.html You may be able to fix it by
cleaning it, or wire harness may not be making contact. My problem was
somewhere else so I just increased the throttle stop speed, and forgot
about it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
---- wrote:
>
> My '93 JGC V-8 has a problem with dying at low speed. It can't take
> acceleration, then getting off the throttle. The RPM will drop to
> zero, then the engine will catch or die. Happens when starting too.
> In the old days I would suspect the dash pot, but with fuel injection
> I don't think there is anything similar to that to prevent a too rapid
> reduction in throttle. Gets to be very annoying with several
> re-starts, and the engine dying while trying to negotiate a parking
> lot. No problem at cruising speed.
>
> ----
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