If you have the codes read and repair what is wrong with the vehicle the light will go out on its own, or can be reset by the tech.
Why cant you put any 5.0 engine in your 1991 mercury grand marquis
FIREWALL 4 - 8 3 - 7 2 - 6 1 - 5 FRONT
According to the 1998 Mercury Grand Marquis Owner Guide ( 5W-30 ) * with engine oil filter change , 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil
mine does so it might be that whoever put your motor in then they didnt put it in correct well at least da wires that control your over drive and check engine and everything else
No.
you really shouldn't disable that light. whenever you get the problem fixed the light will go out on its own. should you disable it you have no way of knowing of any problems your engine may have in the future.
bp 10w-30
By reprogramming the engine ECM.
On the 2001 Mercury Grand Marquis , it has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils on the 4.6 liter SOHC , V8 engine ( it's not the same , as say , a 1997 Mercury Grand Marquis that had ( 2 ) coil packs with four towers on each coil pack and spark plug wires with the Electronic Distributorless Ignition System ( EDIS )
It is illegal to disable the check engine light.
No, the 3.0 V6 in a 1993 Mercury Villager is NOT and interference engine.
Is a 1996 mercury tracer 1.9 a interference engine?