There are several service bulletins that may also help with this. Chrysler
had trouble with some fuel pumps in '97, and the best way to test is to
attach a fuel pressure gauge. Another issue is gas quality. Make sure to
use a good brand name gasoline, perhaps better than just regular octane.
Another service bulletin described volatility issues, and stated that good
quality higher octane gas may help this. All of these were listed as
responsible for driveway die-outs. My son's TJ acts the same way, and we
have noticed some improvement with better quality/higher octane gas.

cal


"Ralph DL" <RalphDL@webtv.net> wrote in message
news:7665-3F5B642F-40@storefull-2273.public.lawson.webtv.net...
> My 97 TJ, with 4 cyl auto, 60,000 miles, often conks out when I back
> it out of the garage in the morning... after restart and going forward
> it falters and lightly backfires a few times. When I let up on the gas
> and press the pedal again it runs okay. The rest of the day no
> problems on startup and go.
>
> I live in North Central Florida.
>
> Any ideas on the cause?
>
> Thanks in advance for your comments.
>
> RalphDL@webtv.net
>

 

Whoops!

I stand corrected on that one. The service bulletin I remember reading was
when looking at a grand cherokee problem, and I still got it bass ackwards.
Apparently, if the engine is designed to run on 87 octane, use 87 octane.
This bulletin also encouraged the occasional use of fuel injector cleaners
(cheaper) rather that higher octane fuels to maintain system cleanliness.
This bulletin can be viewed at:

http://home.sc.rr.com/janet/TSB/14-08-97.htm

I still stand by my recommendation of name brand fuels. If possible, look
at fuel pressure. You might try cycling the ignition on/off (listen for the
pump to start and stop after several seconds of 'on') several times before
actually starting the engine. This would help build fuel pressure.
cal

"bllsht" <nospam@invaliddot.net> wrote in message
news:t9mqlv48jb5utr5fc4g0qtgc0smeo6e3np@4ax.com...
> In message <1ZM6b.9925$AU.592886@twister.southeast.rr.com>, "Cal" wrote:
>
> >There are several service bulletins that may also help with this.
Chrysler
> >had trouble with some fuel pumps in '97, and the best way to test is to
> >attach a fuel pressure gauge. Another issue is gas quality. Make sure
to
> >use a good brand name gasoline, perhaps better than just regular octane.
> >Another service bulletin described volatility issues, and stated that
good
> >quality higher octane gas may help this.
>
> Actually, the TSB said that using fuel with a higher octane rating than
the
> vehicle was designed for could contribute to driveability problems.
>
> >All of these were listed as
> >responsible for driveway die-outs. My son's TJ acts the same way, and we
> >have noticed some improvement with better quality/higher octane gas.
> >
> >cal
> >
> >
> >"Ralph DL" <RalphDL@webtv.net> wrote in message
> >news:7665-3F5B642F-40@storefull-2273.public.lawson.webtv.net...
> >> My 97 TJ, with 4 cyl auto, 60,000 miles, often conks out when I back
> >> it out of the garage in the morning... after restart and going forward
> >> it falters and lightly backfires a few times. When I let up on the gas
> >> and press the pedal again it runs okay. The rest of the day no
> >> problems on startup and go.
> >>
> >> I live in North Central Florida.
> >>
> >> Any ideas on the cause?
> >>
> >> Thanks in advance for your comments.
> >>
> >> RalphDL@webtv.net
> >>
> >
>

 

Whoops!

I stand corrected on that one. The service bulletin I remember reading was
when looking at a grand cherokee problem, and I still got it bass ackwards.
Apparently, if the engine is designed to run on 87 octane, use 87 octane.
This bulletin also encouraged the occasional use of fuel injector cleaners
(cheaper) rather that higher octane fuels to maintain system cleanliness.
This bulletin can be viewed at:

http://home.sc.rr.com/janet/TSB/14-08-97.htm

I still stand by my recommendation of name brand fuels. If possible, look
at fuel pressure. You might try cycling the ignition on/off (listen for the
pump to start and stop after several seconds of 'on') several times before
actually starting the engine. This would help build fuel pressure.
cal

"bllsht" <nospam@invaliddot.net> wrote in message
news:t9mqlv48jb5utr5fc4g0qtgc0smeo6e3np@4ax.com...
> In message <1ZM6b.9925$AU.592886@twister.southeast.rr.com>, "Cal" wrote:
>
> >There are several service bulletins that may also help with this.
Chrysler
> >had trouble with some fuel pumps in '97, and the best way to test is to
> >attach a fuel pressure gauge. Another issue is gas quality. Make sure
to
> >use a good brand name gasoline, perhaps better than just regular octane.
> >Another service bulletin described volatility issues, and stated that
good
> >quality higher octane gas may help this.
>
> Actually, the TSB said that using fuel with a higher octane rating than
the
> vehicle was designed for could contribute to driveability problems.
>
> >All of these were listed as
> >responsible for driveway die-outs. My son's TJ acts the same way, and we
> >have noticed some improvement with better quality/higher octane gas.
> >
> >cal
> >
> >
> >"Ralph DL" <RalphDL@webtv.net> wrote in message
> >news:7665-3F5B642F-40@storefull-2273.public.lawson.webtv.net...
> >> My 97 TJ, with 4 cyl auto, 60,000 miles, often conks out when I back
> >> it out of the garage in the morning... after restart and going forward
> >> it falters and lightly backfires a few times. When I let up on the gas
> >> and press the pedal again it runs okay. The rest of the day no
> >> problems on startup and go.
> >>
> >> I live in North Central Florida.
> >>
> >> Any ideas on the cause?
> >>
> >> Thanks in advance for your comments.
> >>
> >> RalphDL@webtv.net
> >>
> >
>