Mr2 mk1 only blowing cold on the heater ?.can anyone help.

a ford toyota MR2, that must be a tight fit. (a rocket sled?)
so send photos.

its a high pressure gas so if your not sure have someone due it but parts stores sell a kit the kit will give some directions

hi Its located in the TOP of the fuel tank itself which is in the centre of the car. Its possibly the hardest part to get to in a mk1 MR2 as you have to drop the tank.it is not a 2 hour job. Be sure to set aside an entire day to getting this thing in and out. You must disconnect all electrical line going to the gas tank. These are located under the center concole. Then remove all fuel lines to the tank. Removing the coolant line made things more accessable. If you are replacing the pump, dont forget a new tank o-ring. I would also recommend replacing the fuel sender unit at this time as well. Good luck, please comment and rate thanks

If when you change the temp setting the blend door moves through its range of motion, it is working properly. If you have a hearter water control valve on the heater hose in the engine compartment, it should also open and close when you change the setting. If you don't have such a valve on the heater hose, the problem could be a clogged heater core. To test for a clogged core, turn the heater off for a few minutes then turn it back on. If it is warm for a short while and then turns cold, the core has insufficient flow.
Or, if your engine is running cold, your engine thermostat may be stuck open.
Please let me know if you have questions.

Google "Helms", they are the largest replacement manual sellers in the country.

The ring gear is mounted to the flywheel for your starter teeth to engage and turn the engine. Most all cars have this ring gear. If you are having problems starting it may be worn teeth at one point. Auto trans and manual trans will have a ring gear for the starter.

It could be air locked. Feel both your heater hoses, and, with the engine running, loosen the one that's cold, if there is one. If that doesn't help, it is probably your heat control valve that is malfunctioning.

my bmw 323i heaters blowing cold on passenger side anyone help

Sounds like it is stuck. The location of it is on the passenger side of the motor to the right of the oil filter. Also a good upgrade to your MR2 is to go with a 170 deg thermostat.( TRD) The mr2 comes with a higher temp model witch will run your car hotter. Cooler is better! Good luck!

they radiator flush has created a blockage in the heater core that creates the heat. you dont want to replace this part because it can get $$$$. i would take it back to the shop and have them try the service again( at no charge) to see if it can remove the block