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Phone must be turned off so press and hold Power button. Restore NOKIA Asha 210 Ā· Now open up dialer by pressing Call key. Ā· Tap this code using keypad: "* + 3 ...
code p 128 refers to coolant thermostat---coolant temp below thermostat regulating temperature ====causes --mechanical fault
you say that you have replaced the thermostat and it is just under 210 F which is 99 c or almost boiling point
you will have to investigate why it is running so hot.
check that you put the thermostat in correctly ( bulb section to block/head water
Next point --the codes are originated by the coolant temperature sensor ( puts the fans on and sets the ECM fuel/air ratio for the engine ) so to get it off you will need to reset with a scan tool
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. Check for air leaks on or around any intake pipework using a good spraying of carb cleaner, if the engine surges then that's the leak. Check wiring to Maf and if the inside is dirty, again use carb cleaner liberally...NOTE: do not use Wd40... If the code comes back, it may be necessary to replaced the mass air flow sensor.
Is your engine temperature at 210 degrees? Need a scan tool for this, the guage isn't reliable. If not, cheapest thing to do 1st would be change your thermostat if it's not at 210. If that doesn't work, have your catylitic converter back pressure tested. You could try some Cat Clean added to your gas too as cats are expensive.
Check the fuel filter, air cleaner, and muffler for plugging. Check the condition of the fuel lines. Make sure the choke is operating properly. Be sure to use a synthetic chain saw oil in the fuel, not boat motor oil. I'm assuming that the jet screws have not been adjusted in an attempt to fix the problem. Hope this helps!
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