fuel pump problem?
#11
Guest
Posts: n/a
Re: fuel pump problem?
It happens basically anytime I punch it, not necesarilly petal to the metal.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
#12
Guest
Posts: n/a
Re: fuel pump problem?
It happens basically anytime I punch it, not necesarilly petal to the metal.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
#13
Guest
Posts: n/a
Re: fuel pump problem?
It happens basically anytime I punch it, not necesarilly petal to the metal.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
I'm a little scared to jump into traffic because if I hit it too hard, it
will stumble. I did replace the O2 sensor about 3 months ago and that
cleared up some other problems, but the stumbling continues. I checked the
MAP sensor and the TPS sensor according to the Haynes manual and everything
checked OK. It seems to do it with a cold or warm engine.
#14
Guest
Posts: n/a
Re: fuel pump problem?
Martin & Debbie Ghioto did pass the time by typing:
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
#15
Guest
Posts: n/a
Re: fuel pump problem?
Martin & Debbie Ghioto did pass the time by typing:
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
#16
Guest
Posts: n/a
Re: fuel pump problem?
Martin & Debbie Ghioto did pass the time by typing:
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
How's your distributor? Take the cap off and see if there is any oil
in there and if the rotor will move side to side. If it does you
found another possible cause. Only solution in that case is to replace
the distributor. (It's an easy job, don't fork over major bucks to the dealer)
Any engine codes being thrown other than 12?
Last but not always least is the CPS (Crankshaft Position Sensor)
but usually when it goes your jeep simply dies. A flaky one can
cause stumble though.
Still sounds like the MAP sensor to me. Mine tested ok but replacing
it did improve acceleration. My solution was to buy new sensors and
swap them out till the problems went away. Then just keep the rest
as spares for the future.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
#17
Guest
Posts: n/a
Re: fuel pump problem?
That's also at it's highest compression, that's why the carburetor
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
#18
Guest
Posts: n/a
Re: fuel pump problem?
That's also at it's highest compression, that's why the carburetor
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
#19
Guest
Posts: n/a
Re: fuel pump problem?
That's also at it's highest compression, that's why the carburetor
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
shoots an accelerator shirt of gas to it at that same time. And the time
when a spark plug is most likely to fail. You, told us you replaced
them, so maybe you accidentally broke an insulator, recheck them. Or
maybe, you have a bad ignition wire leading to one.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Martin & Debbie Ghioto wrote:
>
> It happens basically anytime I punch it, not necesarilly petal to the metal.
> I'm a little scared to jump into traffic because if I hit it too hard, it
> will stumble. I did replace the O2 sensor about 3 months ago and that
> cleared up some other problems, but the stumbling continues. I checked the
> MAP sensor and the TPS sensor according to the Haynes manual and everything
> checked OK. It seems to do it with a cold or warm engine.
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