91 yj driving me crazy
04-06-2004, 06:59 PM
#31
Guest
Posts: n/a
Re: 91 yj driving me crazy
look at this articles...
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
04-06-2004, 06:59 PM
#32
Guest
Posts: n/a
Re: 91 yj driving me crazy
look at this articles...
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
04-06-2004, 06:59 PM
#33
Guest
Posts: n/a
Re: 91 yj driving me crazy
look at this articles...
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
http://www.asashop.org/autoinc/april2001/techtotech.cfm
http://www.asashop.org/autoinc/feb99/techtotech.htm
mcapsu@yahoo.com (mike) wrote in message news:<fed0233a.0404052134.6838cdcf@posting.google. com>...
> I am going nuts with this problem,
>
> my 91 yj has not started in about six months now!
>
> I changed the oil around october and parked it for a week, then went
> to start it up and it cranked and cranked, but didnt start.
>
> Now the list starts...
>
> fuel filter? changed it no help
>
> fuel pump? got a fuel pressure gauge and the fuel rail has pressure
> within spec (36-40 psi)
>
> spark? put a timing light on it, i have spark on all 4 plugs
>
> not enough spark?
> changed plugs, wires, cap, rotor, coil
>
> injectors not opening?
> bought a set of noid lights and they blink like a christmas tree like
> they are supposed to, and the plugs are wet, pulled injectors and
> replaced o-rings and cleaned as best i could by hand, I couldnt find a
> place that would test them to see if they were stuck open
>
> out of time?
> put the light on it and cranked it over... looked to be 4 degrees
> retarded... changed timing chain(which was a bit slack when i took the
> cover off), sprockets and tensioner and noticed the water pump was
> leaking, changed that too, now its fireing at 0
>
> electrical?
> checked ground strap from block to firewall for continuity - very low
> to no resistance, same with negative post of battery to block or
> chassis
> fuses - all look good, under hood and under dash
>
> bad gas?
> siphoned out tank and refilled, cranked a bunch with the release of
> the fuel pressure gauge open to get the gas in the lines 'clean'
>
> i am stumped, i guess im back to electrical, i just pulled all of the
> underdash fuses except the ignition fuse, it cranks and sounds like
> maybe one cylinder is fireing(same as with them all in), my next todos
> are to get a code reader and see if i get anything on that, then also
> check the ground to the coil, then maybe replace the computer...
>
> does anyone know where the computer is located on a '91 yj 2.5l?
> can they test that out of the vehicle?
>
> i cant seem to find a timing setting on it, is it supposed to fire
> advanced at all? or is that controlled by the computer?
>
> also all the dash gauges/idiot lights are now not coming on (yes with
> the fuses in, no check engine light earlier in the disaster which is
> why i didnt hook up an OBD reader earlier)
>
> compression? (i would have thought id get more warning on this? it is
> a 2.5l turning 31s so it was never peppy)
>
> any other ideas?
>
> sorry if this post sounds a bit angry but im just frustrated, thanks
> for any help in advance
>
> Thanks,
> Mike
>
> 96xj (luckily this one is hauling me around trustilly)
> 91yj (lets pull it out of its early grave!)
> 97 ducati monster 900 (new toy :-) )
04-07-2004, 01:09 AM
#34
Guest
Posts: n/a
Re: 91 yj driving me crazy
sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
04-07-2004, 01:09 AM
#35
Guest
Posts: n/a
Re: 91 yj driving me crazy
sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
04-07-2004, 01:09 AM
#36
Guest
Posts: n/a
Re: 91 yj driving me crazy
sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
04-07-2004, 01:09 AM
#37
Guest
Posts: n/a
Re: 91 yj driving me crazy
sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
> look at this articles...
> http://www.asashop.org/autoinc/april2001/techtotech.cfm
> http://www.asashop.org/autoinc/feb99/techtotech.htm
>
ok i checked the cps, it read around 260 ohms the spec is 200 + or -
75 ohms...
that second link looks like my problem though, the injectors timed
wrong.. i guess it makes sense, the fuel air mixture wouldnt be
right...
however i think i need to read that article about 50 times, it seems
to be a bit over my head...
my motor is what he refers to as a 'traditional engine', it still has
a distributor cap/rotor for the spark, but uses a cps for injector
timing... and it seems that the relation between the 2 may be off, or
the ECM is processing the readings from the sensor wrong... i do have
an extra distributor cap i could make a window in, but im not really
sure how to get them back into sync
Thanks for the link serg i think this might be it.., if you could
explain the article a little that would be awesome :-)
Thanks,
Mike
04-07-2004, 09:59 AM
#38
Guest
Posts: n/a
Re: 91 yj driving me crazy
Did you change the timing chain as a result of something or did this
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
04-07-2004, 09:59 AM
#39
Guest
Posts: n/a
Re: 91 yj driving me crazy
Did you change the timing chain as a result of something or did this
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
04-07-2004, 09:59 AM
#40
Guest
Posts: n/a
Re: 91 yj driving me crazy
Did you change the timing chain as a result of something or did this
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
happen after the change?
Could be you now have more than one issue....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
mike wrote:
>
> sfon@yahoo.com (serg) wrote in message news:<934d0785.0404061459.6b6d3c07@posting.google. com>...
> > look at this articles...
> > http://www.asashop.org/autoinc/april2001/techtotech.cfm
> > http://www.asashop.org/autoinc/feb99/techtotech.htm
> >
> ok i checked the cps, it read around 260 ohms the spec is 200 + or -
> 75 ohms...
> that second link looks like my problem though, the injectors timed
> wrong.. i guess it makes sense, the fuel air mixture wouldnt be
> right...
>
> however i think i need to read that article about 50 times, it seems
> to be a bit over my head...
>
> my motor is what he refers to as a 'traditional engine', it still has
> a distributor cap/rotor for the spark, but uses a cps for injector
> timing... and it seems that the relation between the 2 may be off, or
> the ECM is processing the readings from the sensor wrong... i do have
> an extra distributor cap i could make a window in, but im not really
> sure how to get them back into sync
>
> Thanks for the link serg i think this might be it.., if you could
> explain the article a little that would be awesome :-)
>
> Thanks,
> Mike
