Mazda 626 LX, 96, 2.0,118700 mileage

DWIGHT ROLLINS

MEMBER
MAZDA 626

Car started over heating due to a shortage in the radiator fan plug which I found out later. But before I discovered this was the problem it over heated one day and the overflow water hose blew off and hot coolant and steam came shooting out. After this incident the car would take very long to start but after it warms up it starts on one crank, the air conditioning stop working and during driving conditions it accelerates very slow and the radiator fan now stays on from the moment I get the car started. I got a low voltage coolant sensor switch reading from the trouble codes and changed the switch, spark plug wires and rotor pin but all the current problems still exsists. What else needs to be done?

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Is it still overheating? If so have the tests done below to rule out a combustion leakage

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.

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Monday, November 26th, 2007 AT 5:37 AM

DWIGHT ROLLINS

MEMBER
3 POSTS

It does not over heat anymore the problem was the radiator fan plug which was fixed. But all the other problems I've listed, takes long to start, poor acceleration and the ac stopped working also the radiator fan stays on while the car is running, these problems still exist.

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Monday, November 26th, 2007 AT 5:55 AM

RASMATAZ