accelerating problems
#1
Guest
Posts: n/a
accelerating problems
I could use a little help. I have an 89 Comanche, 4L automatic. A while
ago the truck would start to miss as I accelerated. It idles fine, but
as soon as I push the gas it would seem to miss. I was idling it to my
mechanic and all of a sudden it was fine. I left it there and when he
looked at it, no "missing". A week later - same problem. They put it on
the computer etc. and came to the conclusion that it was the
distributor. They put a new one in and presto-it didn't work. They sent
it to a jeep dealership and they couldn't come up with anything. (
actually they said it may be a broken camshft but they wouldn't know
for sure till they opened it up)
Well BS to that. I put in a new O2 sesor and it worked fine for two
weeks. It started again and I found the sensor plug had come apart -
joined it - no go. Thought I might have contaminated it so i put a new
one in -no go-idles fine but...I found a couple of map sensors and
hooked one of them up and it worked fine. In the mean time my catalytic
covertor was taken off and replaced with a straight pipe. The truck
drove fine for a couple of hours and now we are back to the same
problem-idles fine but as soon as you hit the gas its rough. I would
appreciate any ideas.
ago the truck would start to miss as I accelerated. It idles fine, but
as soon as I push the gas it would seem to miss. I was idling it to my
mechanic and all of a sudden it was fine. I left it there and when he
looked at it, no "missing". A week later - same problem. They put it on
the computer etc. and came to the conclusion that it was the
distributor. They put a new one in and presto-it didn't work. They sent
it to a jeep dealership and they couldn't come up with anything. (
actually they said it may be a broken camshft but they wouldn't know
for sure till they opened it up)
Well BS to that. I put in a new O2 sesor and it worked fine for two
weeks. It started again and I found the sensor plug had come apart -
joined it - no go. Thought I might have contaminated it so i put a new
one in -no go-idles fine but...I found a couple of map sensors and
hooked one of them up and it worked fine. In the mean time my catalytic
covertor was taken off and replaced with a straight pipe. The truck
drove fine for a couple of hours and now we are back to the same
problem-idles fine but as soon as you hit the gas its rough. I would
appreciate any ideas.
#2
Guest
Posts: n/a
Re: accelerating problems
Pluggged up gas filter? It is located on the drivers side frame rail in
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
#3
Guest
Posts: n/a
Re: accelerating problems
Pluggged up gas filter? It is located on the drivers side frame rail in
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
#4
Guest
Posts: n/a
Re: accelerating problems
Pluggged up gas filter? It is located on the drivers side frame rail in
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
#5
Guest
Posts: n/a
Re: accelerating problems
Pluggged up gas filter? It is located on the drivers side frame rail in
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
front of the tank.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
kinder wrote:
>
> I could use a little help. I have an 89 Comanche, 4L automatic. A while
> ago the truck would start to miss as I accelerated. It idles fine, but
> as soon as I push the gas it would seem to miss. I was idling it to my
> mechanic and all of a sudden it was fine. I left it there and when he
> looked at it, no "missing". A week later - same problem. They put it on
> the computer etc. and came to the conclusion that it was the
> distributor. They put a new one in and presto-it didn't work. They sent
> it to a jeep dealership and they couldn't come up with anything. (
> actually they said it may be a broken camshft but they wouldn't know
> for sure till they opened it up)
> Well BS to that. I put in a new O2 sesor and it worked fine for two
> weeks. It started again and I found the sensor plug had come apart -
> joined it - no go. Thought I might have contaminated it so i put a new
> one in -no go-idles fine but...I found a couple of map sensors and
> hooked one of them up and it worked fine. In the mean time my catalytic
> covertor was taken off and replaced with a straight pipe. The truck
> drove fine for a couple of hours and now we are back to the same
> problem-idles fine but as soon as you hit the gas its rough. I would
> appreciate any ideas.
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