Friday, May 2, 2014
How to Install a Fuel Pump on 1991 Mazda 626 LX
The Mazda 626 is a series of cars manufactured by Mazda for the export market from 1979 to 2002. The 1991 Mazda 626 was a mid-size car, and the LX designator indicates a trim level in the United Kingdom. The engine for the 1991 Mazda 626 uses fuel injection, which requires the fuel pump to deliver pressurized fuel. The fuel pump for this vehicle is accessible from the rear passenger compartment.
Instructions
- 1
Start the engine, and remove the relay connector under the left side of the instrument panel. Allow the engine to stall, and turn the ignition switch off. Connect the relay connector.
2Disconnect the cable for the negative battery terminal with a socket wrench. Press the clip on each end of the rear seat to release the cushion, and remove the rear seat cushion. Detach the electrical connector for the fuel pump assembly. Remove the screws on the access cover for the fuel pump assembly, and open the access cover.
3Detach the fuel lines from the fuel pump assembly, and remove the mounting screws on the fuel pump assembly with a socket wrench. Discard the old gasket for the fuel pump assembly. Disconnect the electrical connector for the fuel sending unit, and remove the mounting nuts for the fuel sending unit. Disconnect the fuel sending unit from the fuel pump.
4Attach the fuel sending unit to the new fuel pump, and fasten the mounting nuts for the fuel sending unit with a socket wrench. Connect the electrical connector for the fuel sending unit, and place a new gasket on the fuel tank. Install the fuel pump assembly into the fuel tank, and fasten the mounting screws for the fuel pump assembly. Attach the fuel lines to the fuel pump assembly.
5Replace the access cover, and fasten the mounting screws for the access cover with a socket wrench. Connect the electrical connector for the fuel pump assembly, and replace the rear seat cushion. Connect the cable for the negative battery terminal, and start the engine. Check the fuel system for leaks.
Tuesday, April 29, 2014
Trouble Codes for the 1994 Ford Escort LX
You can check the trouble codes for your 94 Ford Escort LX without the use of a code scanner. The 94 Ford Escort LX comes equipped with the first generation On-Board Diagnostics (OBD) computer. This computer receives and stores trouble codes sent to it from sensors positioned throughout the vehicle. These trouble codes are sent when the sensors detect a malfunction in the Escort. You should always read the codes first to diagnose the trouble, then fix the vehicle before resetting the OBD computer. The computer communicates with you via warning and service lights that appear on the instrument panel. If you ignore these lights you may risk further damage to your Ford.
Instructions
- 1
Put the key into the ignition and turn it to the "on" position but dont start the engine. Pop open the hood and prop it up with the safety bar.
2Find the six-pin receptor Self-Test Output (STO). Next to that output is the small, one-receptor Self-Test Input (STI).
3Examine the STO and find the two outlets on the bottom. The outlet on the left, as you are facing it, is the ground outlet. Use the jumper wire to connect this ground outlet to the STI.
4Sit in the drivers seat and turn the key to the "Run" position. Watch the instrument panel while the "Check Engine" light flashes and count the number of flashes. This is the first number in the code. Write it down on a piece of paper. There will be a couple of second pause then the "Check Engine" light will flash again. Count the number of times it flashes. This is the second digit in the code. Write down this number. If there are more codes to follow, they will be separated by a four-second pause.
5Look up the meaning of the codes in any 1994 Ford Escort LX repair manual.
