20 Most Recent 1990 Mazda 929 Questions & Answers

possible ECM failure or immobilizer activated run the fault codes to determine the cause of the failure to start

on the gear box

Wow this model still exists i only thought this age of car could be found in the museum ,anyway sounds like the ignition switch has failed ,dont think new ones are still available for such a old vehicle

We dont have a diagram, but on 1990 Mazda 929 3.0L FI 6cyl the Thermostat is located under hood, driver side, upper engine area, engine end of upper radiator hose, mounted in coolant outlet housing.

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Jose.

There might be a short between the alternater and ground.
Check wiring
Disconnect battery and alternater wiring from the back of the alternater and with a multimeter check for continuity between the BAT stud on the back and the alternater housing.There shouldn't be any.

THE QUESTION WILL BE IF THE INJECTORS ARE CLOGGED OR BAD! THE FUEL MUST PASS THRU THE INJECTORS TO GET TO THE CYLINDERS!

TRY this. Front seating area, passenger side, under dash, mounted behind glove compartment cavity

will try to help,is the vibration only when you apply the brakes? if so, then your front brakes and brake rotors need attention. if vibrating just normal drving with no braking, then it can be several more issues. can be tires need balancing. need front end alignment. have you looked at your front tires for excessive wear on inside or outside tire? if so, you're in need of alignment. do you have wobble in wheel when your rolling forwards? it can be a bad ball joint on either side[front] at least this will give you a starting point. if you need further help,please just repost your question and we will be happy to assist you. and as always,thank you for choosing fixya.com

Remove everything above the valve cover, unbolt the valve cover remove old gasket and replace. Pay attenstion to where everything went and mark spark plug wires .

bad brake switch more that likely

it could possibly be the motor going bad or it just simply needs to be lubed up a little

start looking for a vacuum leak, most probable cause

best bet then is try the ckrap yards or buy a haynes service book this is helpfull at times?

Hi

This could happen when the fan stops moving while you are driving and thus making it to overheat. Please check all the connections to the fan.

Please do accept this solution and revert for further assistance.

Thanks
Rylee

if it is a cool mist ,it is the air conditioner freezing up ,check freon to see if it is low,,and low presure cut out switch to see if it is working corectley,,u might have a closed up expansion valve,,,,,if it is not a cool mist and smells sweet,,,it is the heater core,,,stop leak,,or replace heater core

Your ecu check connector is located just near the air cleaner (green 6-pin)
you got also near it the idle speed conector (green 1-pin)
and finally the fuel pump connector (yellow 2-pin)
they are all around one an other

good luck
have a great day

Denis