1991 MAZDA MVP AND THERMOSTAT WAS PUT IN BACKWARDS

Google it, or try eBay for the workshop manual on a cd format.

The transmission select button varies the shift points , eg; when in 'econo' the trans will shift sooner than when in 'power' mode.
'power' will be to keep the transmission in a higher gear (engine RPMs higher = more power ).

93 and up Mazda MPV

could be your starter or even you key switch.. i would start with having the starter checked.. if that is nto the problem then on to the key switch.. but it could be as simple as a bad battery or loose connection

than I would have the fuel pressure check and change the fuel filter

Yes, the front pully is the belt drive and that must come off to get to seal. The radiator has to come out to take the pully off. The pully should come off easily once retaining bolt is removed. It can only go back on one way. Goood luck

blown head gasket most likely

Not a solution but i am going through the exact same nightmare and same symptoms with my 1991 mazda b2200. I've apwnt over two grand to have my rebuilt TWICE and my alternator replaced and still does the same thing just starts only to die 2 seconds or so later unless i let it warm up to its max but will still die when taking turns and stopping at lights.

try replacing the fule filter and useing gas treatment to clean up injecters. also get a tuneup.i have had simaler probs with mine and have had success with these steps.

The firing order is 1-4-2-5-3-6. The cylinders are, front bank is from drivers side to passenger, 6-5-4 , and 3-2-1 at the firewall. This is for a 2004 Mazda MPV.