what others did or not, is not if any importance IMO, (lacking receipts)
all cars ran great new, but not now, 19 years later... all fail now , you're in that class how, the 19year old class . (most cars this old have 10 things wrong and now stackedup., (hard to find)
since it runs OK cold.
that tells me spark is probably ok.
what is wrong is hot. running, if it bogs its fuel, bogging is not violent misfiring, bogging is like pulling a dead 10,000 weight but also can feel like hesitation that is also loss of fuel.
what we do, is check fuel pressure first.
why
well the whole EFI system is rendered useless (near) lacking spec pressure
and #2 the ECU can not measure rail pressure, nor know how to compensate for the wrong pressure , as it is blind to that.
the 02 can trim this, out but the 02 sensor is off line , accelerating and at WOT, wide open throttle, so that means fuel pressure must be in spec.
we use fuel pressure gauge at the fuel RAIL or at the filter test port to do that.
on all 16v there are 3 tests (minimum) keyon pressure after 3 keys on, no start. then idle pressure then see what it does gunned to wot for 1 second.
all 3 tests must pass. (type pump in my search box for all 6 tests+)
the maf test is next or even first lacking tools to do both.
at kickfix.com I type maf in the search box and land at
http://www.fixkick.com/sensors/92-95MAF/...sting.html
the car sat too long, and that will make fuel go bad, for sure modern USA gas what ethanol in it at 10% , this gums up injectors !
if pressures are good and maf ok , maybe the injectors screens are packed, (takes untrasonic reverse cleaning to fix the hard ones, techron can fix)
first clean the maf, using maf cleaner (CRC) and keep the nozzle straw 8 inches away from the fragile element inside, best is spray 3 times, let soak 1 min between sprays to get it softer that gunk there.
maf pin 2 , meter there and ground
key on volts
idle
and gunned
if A/t SHIFT BOX, USE IT AS DYNO,, DO THE TRANSMISSION STALL TEST WITH MAF TEST AT THE SAME TIME, SEE HUGE AIR FLOWS. BUT i see yours is 5speed.
the maf output will be max at 95HP,
here is me testing my MAF , live and up a hill and attempting to make max HP. and see what a good maf does
fuel pressure at spec, FPR working 100 percent and raise fuel pressure by 6psi, at wot.
and you get this cool spike out of Mr,. maf (my scan tool can log data on any sensor, in time, or all sensors at once, i can the import it to Excel and plot it) you can see my doing shift points here 5 speed 96
![[Image: hills1.jpg]](http://www.fixkick.com/sensors/92-95MAF/hills1.jpg)
the maf weak acts just like low fuel pressure or 4 injectors 1/2 clogged
that fact is way we do 2 tests to prove which it is, a bad FPR is most easy to replace and not $1000 cost like MAF from suz. Cardone1 sells them rebuilt for 400.
all cars ran great new, but not now, 19 years later... all fail now , you're in that class how, the 19year old class . (most cars this old have 10 things wrong and now stackedup., (hard to find)
since it runs OK cold.
that tells me spark is probably ok.
what is wrong is hot. running, if it bogs its fuel, bogging is not violent misfiring, bogging is like pulling a dead 10,000 weight but also can feel like hesitation that is also loss of fuel.
what we do, is check fuel pressure first.
why
well the whole EFI system is rendered useless (near) lacking spec pressure
and #2 the ECU can not measure rail pressure, nor know how to compensate for the wrong pressure , as it is blind to that.
the 02 can trim this, out but the 02 sensor is off line , accelerating and at WOT, wide open throttle, so that means fuel pressure must be in spec.
we use fuel pressure gauge at the fuel RAIL or at the filter test port to do that.
on all 16v there are 3 tests (minimum) keyon pressure after 3 keys on, no start. then idle pressure then see what it does gunned to wot for 1 second.
all 3 tests must pass. (type pump in my search box for all 6 tests+)
the maf test is next or even first lacking tools to do both.
at kickfix.com I type maf in the search box and land at
http://www.fixkick.com/sensors/92-95MAF/...sting.html
the car sat too long, and that will make fuel go bad, for sure modern USA gas what ethanol in it at 10% , this gums up injectors !
if pressures are good and maf ok , maybe the injectors screens are packed, (takes untrasonic reverse cleaning to fix the hard ones, techron can fix)
first clean the maf, using maf cleaner (CRC) and keep the nozzle straw 8 inches away from the fragile element inside, best is spray 3 times, let soak 1 min between sprays to get it softer that gunk there.
maf pin 2 , meter there and ground
key on volts
idle
and gunned
if A/t SHIFT BOX, USE IT AS DYNO,, DO THE TRANSMISSION STALL TEST WITH MAF TEST AT THE SAME TIME, SEE HUGE AIR FLOWS. BUT i see yours is 5speed.
the maf output will be max at 95HP,
here is me testing my MAF , live and up a hill and attempting to make max HP. and see what a good maf does
fuel pressure at spec, FPR working 100 percent and raise fuel pressure by 6psi, at wot.
and you get this cool spike out of Mr,. maf (my scan tool can log data on any sensor, in time, or all sensors at once, i can the import it to Excel and plot it) you can see my doing shift points here 5 speed 96
the maf weak acts just like low fuel pressure or 4 injectors 1/2 clogged
that fact is way we do 2 tests to prove which it is, a bad FPR is most easy to replace and not $1000 cost like MAF from suz. Cardone1 sells them rebuilt for 400.
http://www.fixkick.com