Top 20 1991 Mazda MPV Questions & Answers

It sounds like there could be something in the fuel tank blocking the pickup . When the engine is stopped and the pump stops sucking it could drift away from the pickup and the engine starts but when the pump starts sucking again it picks up the blockage again. Failing that it could be the computer control box. Around that era some boxes would fail at certain temperatures and then after cooling come good again. Hope this might help. col

Your ignition switch may be defective. try to borrow a remote starter to see if it will crank without using your ignition switch

have the fault codes read indicates a problem crank/ cam position sensor

Check the timing to make sure its properly lined up, the belt may have slipped and jumped a tooht, or loose tensioner on the timing belt. Confirming the timing will give you a good clue as to where to look next.

would be best if you are going to do the work yourself to get a chilton or a haynes repair manual that covers the entire vehical top to bottom with illistrated pics and step by step and dos anddo nots

haven't seen that but have seen corrosion cause them to get stuck

waterpump?

front crank seal or rear.Front involves cambelt removal so you might think of changing that toorear involves gearbox and flywheel removal so if it's a manual you may consider a clutch replacement. Neither job should be attempted by a novice and you really need a manual if your doing it yourself to ensure you don't mess up the timing etc etc

Fuel pump is shot. Can test it by undoing main line and see if fuel pumps out if not than pump needs to be replaced.

check with the local parts dealer to see if you can get the pulley by itself, o'reilly's has it as " Gates - Belt Drive Pulley Part Number: 38037 " for the v-6 engine and 4-cyl engine for about $23 USD

1. Remove the starter from the truck.
   
2. Disconnect the field strap from the solenoid terminal.
   
3. Remove the two solenoid attaching screws.
   
4. Disengage the solenoid plunger from the shift fork and remove the solenoid.
   
5. Install the solenoid on the drive end housing, making sure that the solenoid plunger hook is engaged with the shift fork.
   
6. Apply 12v to the solenoid S terminal and measure the clearance between the starter drive and the stop-ring retainer. It should be 2.0-5.0mm (0.0787-0.1969 in.). If not, remove the solenoid and adjust the clearance by inserting an adjusting shim between the solenoid body and drive end housing.
   
7. Check the solenoid for proper operation and install the starter.
   
8. Check the operation of the starter.
   

It is number 1, bottom right hand corner of this picture....

Here is the link:

http://www.chiltonlibrary.com/content/images/8964/images/89642g19.pdf

If it does not open, please let me know.

please explain

You blew a head gasket at the least. When it leks out the head or block there is a possiblity that the head or block is cracked. check prices, it may be cheaper for you to replace the engine, with a used one, than have a head gasket replaced.

It sounds like your thermostat is stuck closed. You can remove the thermostat and test it on a stove with a pan of water, to see if the thermostat opens before the water boils in the pan.

It uses the same fuse as the front heater blower. There is a ballist resister to allow for the different speeds of the motor that can fail and the blower motor is well known to fail too. Sometimes thers a fuse right in the wire thatr's connected to the blower motor it'self.

Have the car scanned. Many parts stores (autozone, advance, others) offer free scan service.

Under hood, passenger side, lower engine area, mounted on wheelwell in fuel line.

the fuel pump is in the gas tank change the fuel filter at the same time

Yes it can. The have plastic chain guides under the cover that can wear and cause slack in the chain which can cause it to jump. Have you used a timing light on it?
New plugs and wires?
Good fuel filter?
Check engine light off?

Have you tested power from coil packs or distributor?

A camshaft position sensor can cause this as well but most likely the check/service engine light would be on if there was a bad sensor.

get yourself a stilson wrench and remove adjuster bolt then sort out the belt tension.......(you could also weld a nut to the bolt head to give you some leverage.)