Main Fuel Pump Relay Problem - Symptoms & Cause
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Main Fuel Pump Relay Problem - Symptoms & Cause
Main Fuel Pump Relay Problem - Symptoms & Cause
I found out I had a Main Fuel Pump Relay Problem when I had these symptoms.
The Symptoms:
Car will crank, and maybe run for a second, then dies quickly, and won't restart on a hot sunny day or after running the heater full blast for a while, and will start fine after cooling for a couple minutes. The condition will get worst over time and then your car won't start.
The Cause:
86-89 Honda main fuel pump relay is prone to failure due to cracked solder. The solder points on the printed circuit board inside the main relay become cracked/loose over time and the heat causes them to expand just enough to break electrical contact. The main relay provides power to the fuel pump.
Here are pics of the Main Fuel Pump Relay:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=8033885841
I found out I had a Main Fuel Pump Relay Problem when I had these symptoms.
The Symptoms:
Car will crank, and maybe run for a second, then dies quickly, and won't restart on a hot sunny day or after running the heater full blast for a while, and will start fine after cooling for a couple minutes. The condition will get worst over time and then your car won't start.
The Cause:
86-89 Honda main fuel pump relay is prone to failure due to cracked solder. The solder points on the printed circuit board inside the main relay become cracked/loose over time and the heat causes them to expand just enough to break electrical contact. The main relay provides power to the fuel pump.
Here are pics of the Main Fuel Pump Relay:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=8033885841