maps never fail, ouch, that was big money.
8V engine, obviously , year?
ok, tune up , when and miles ago?
First off these cars ( you didnt say what car at all, year or anything )
but i know it is older than 96 ( obd1 is pre 96)
this ECU DTC NEVER cries ,unless it is a serious problem (unlike OBD2)
Never. DTC = Diagnostic trouble codes. but......
pull the battery or the Dome light resets the memory , nothing else.
it will not fix the car by doing that, it will only make diagnosing it harder.
It is like going for 1 year check up with the DR. then trashing the blood work, (not looking at it) Many people here , hate DTC's and for no reason. I love them,
they tell me car is going to die before I go far and wide, not getting stranded is cool. huh?
On this car , one ONLY need s a paper clip to ROLL out the codes on the CEL.
1/4 cent tool. Now is that not cool or what. LOL.
ok, this light is Shared on All low year 90 Kicks Fed48 ( calif cars are missing SES)
SEL = 50k NAG. 80k and all permutations for ever ( unless you unplug the SES slider)
CEL = DTC ( diagnositc codes active, please get them)
Look at the ODOMeter. is it 50k 80 100k 150k, 180k? or ?
IT is just a mileage counter the SES function and is brainless.
the CEL DTC is very useful.
that is all there is on that.
Check Engine Lamp stuck ON?
btw, just pull the SES nag switch on the back of the SPEEDo, has 4 pins
and has the silly backwards lock, spread the lever , do not squeese like all the others.
unpug it and never be SES nagged for ever.
mine is now.
its only purpose is to make dealers rich, resetting the silly thing , then a full tune up and CAT con and o2 later.........
sorry for your trouble , but this is the top post here...