06-25-2020, 06:58 AM
hello and welcome. yes long ago i made this in 2007, at 1/2 retired and board, in winter time.
others run it now.
yes the CEL lamp is burned out for sure this many years.
it just twists out. (in 1996 up it harder to reach with steel boxed in speedo box. (side impact beams added then)
only yours there are 2 ways to get to it , down and under, they are twist clock lamps sockets. even drivers seat removed, and if hands small enough and luck.
the CEL is way way up high.
or cluster pulled, no need to pull dash until heater core leaks.
20mpg sound bad, 26 is par,
loss of power, with gas cap off? bad cap pulls tank vacuum and make pump weak fuel pressure low. the injector has 10micro screens, easy to clean, impossible on 16v 4 injectors need ultra sonic clean.
if too lean misfire all 4 spark plugs go lean not just one like 16v can do.
so is more easy to diagnose any 8v.
8v needs first, these key part working, vacuum lines to MAP perfect, no cracks or clogs end to end there.
ECT good reads 300 ohms hot if right thermostat is not doing 180f, and if is, the ECT bad reading wrong is big trouble. get engine fully hot, pull ect plug and using DMM to ECT pins see 300ohms,
back to CEL.
cluster pull is easy,. just screws.
https://fixkick.com/power-elect/cluster-...r-out.html
your year is here from book tracker.
https://fixkick.com/power-elect/cluster-...r-pull.pdf
step 4 is only tricky part the speedo cable plastic locker, just tickle its 2 tangs inside the shell and it comes off,
then pull 2 connectors and its free...
do you have tilt steering option? lower it.
CEL is #18 GE lamp.
see my bulbs here
https://fixkick.com/buy-parts#Bulbs
here is min, 12+ lamps I think,, use flash light from front to see CEL words, to cheat. Cell is top row below.
![[Image: 63AA0-912WDMT.jpg]](https://fixkick.com/sensors/speedo/slideshow-just-cluster-backs/images/63AA0-912WDMT.jpg)
more misfire talk
low fuel pressure is #1 bad fuel filter, do not lose its 4x banjo copper washers. hard to find.
the pump runs keyon for 3 seconds only, and cranked and obvious, running.
the pump making noise has bad commutator segments ON DC MOTOR END.. IF SUPER LOUD.
power loss for sure hot engine,(means normal)
low fuel pressure, map clogged, or filter clogged ,or melted CAT, the later makes vacuum tests look super wild/strange, gunning throttle if cat melted.
if compression not 160psi but is 80 x4, the cam belt slipped. super low power if does. all the time.
is yours showing low power cold engine? or only hot or both.
yah if the CEL is dead, I too would want to code 12s first,
this ECU only sees dead sensors, dead open or shorted, not weak.
if it bad , we need to know it first. thing,. code 13 up.
this car the 02 sensor if this old has no real chance of working and if not working will force rich.
a dead O2 is zero volts lean, so ECU goes max rich, (lied to)
in limphome it can do 15mpg, super gas hog mode.
sounds like you are on roll, making lots of things wrong good.
this car if compression is ok can be made to run good if the 3sp works.
cheers to you !
PS: (8v simple schematic for engine)
https://fixkick.com/ECU/8v-tbi-schematic91to95.jpg
the Cel runs off same fuse as ECU if IGcoil fuse pops ECU goes dead, and spark and all fuel.
your cluster has power, if IGcoil good (it is) and DOME FUSE.
see page 16 for all lamps there.
https://fixkick.com/look/91-complete.pdf
the tail dome fuse runs park lamps and the 2 cluster back lamps via the dimmer. and runs all most lamps in the cluster as power source.
others run it now.
yes the CEL lamp is burned out for sure this many years.
it just twists out. (in 1996 up it harder to reach with steel boxed in speedo box. (side impact beams added then)
only yours there are 2 ways to get to it , down and under, they are twist clock lamps sockets. even drivers seat removed, and if hands small enough and luck.
the CEL is way way up high.
or cluster pulled, no need to pull dash until heater core leaks.
20mpg sound bad, 26 is par,
loss of power, with gas cap off? bad cap pulls tank vacuum and make pump weak fuel pressure low. the injector has 10micro screens, easy to clean, impossible on 16v 4 injectors need ultra sonic clean.
if too lean misfire all 4 spark plugs go lean not just one like 16v can do.
so is more easy to diagnose any 8v.
8v needs first, these key part working, vacuum lines to MAP perfect, no cracks or clogs end to end there.
ECT good reads 300 ohms hot if right thermostat is not doing 180f, and if is, the ECT bad reading wrong is big trouble. get engine fully hot, pull ect plug and using DMM to ECT pins see 300ohms,
back to CEL.
cluster pull is easy,. just screws.
https://fixkick.com/power-elect/cluster-...r-out.html
your year is here from book tracker.
https://fixkick.com/power-elect/cluster-...r-pull.pdf
step 4 is only tricky part the speedo cable plastic locker, just tickle its 2 tangs inside the shell and it comes off,
then pull 2 connectors and its free...
do you have tilt steering option? lower it.
CEL is #18 GE lamp.
see my bulbs here
https://fixkick.com/buy-parts#Bulbs
here is min, 12+ lamps I think,, use flash light from front to see CEL words, to cheat. Cell is top row below.
more misfire talk
low fuel pressure is #1 bad fuel filter, do not lose its 4x banjo copper washers. hard to find.
the pump runs keyon for 3 seconds only, and cranked and obvious, running.
the pump making noise has bad commutator segments ON DC MOTOR END.. IF SUPER LOUD.
power loss for sure hot engine,(means normal)
low fuel pressure, map clogged, or filter clogged ,or melted CAT, the later makes vacuum tests look super wild/strange, gunning throttle if cat melted.
if compression not 160psi but is 80 x4, the cam belt slipped. super low power if does. all the time.
is yours showing low power cold engine? or only hot or both.
yah if the CEL is dead, I too would want to code 12s first,
this ECU only sees dead sensors, dead open or shorted, not weak.
if it bad , we need to know it first. thing,. code 13 up.
this car the 02 sensor if this old has no real chance of working and if not working will force rich.
a dead O2 is zero volts lean, so ECU goes max rich, (lied to)
in limphome it can do 15mpg, super gas hog mode.
sounds like you are on roll, making lots of things wrong good.
this car if compression is ok can be made to run good if the 3sp works.
cheers to you !
PS: (8v simple schematic for engine)
https://fixkick.com/ECU/8v-tbi-schematic91to95.jpg
the Cel runs off same fuse as ECU if IGcoil fuse pops ECU goes dead, and spark and all fuel.
your cluster has power, if IGcoil good (it is) and DOME FUSE.
see page 16 for all lamps there.
https://fixkick.com/look/91-complete.pdf
the tail dome fuse runs park lamps and the 2 cluster back lamps via the dimmer. and runs all most lamps in the cluster as power source.
http://www.fixkick.com