Hi everyone,
I just replaced the fuel pump relay (R303) in my 2004 EB. Wanted to share my experience.
Symptoms - For about a year's time, the engine would occasionally stall out, or lose all power and run very rough. It didn't die very often, but if it did, it would restart right after. Then, it finally died and would not restart.
Based on reading the forums here I had suspected the fuel pump relay and had been meaning to check and replace if needed. The engine stopping forced me to jump in. Because the fuse box is pretty easy to remove, I skipped jumpering and testing, and went straight to removing the box. A quick inspection showed R303 partially melted and one solder connection fully degraded.
New relay sourced from Amazon (Omron G8QN) for approx $6.00. I've read in several places that this is an upgraded replacement for the original Omron F8YF-BA relay.
I carefully unsoldered the bad relay being extra careful to not apply too much heat. I didn't want to damage the degraded solder pad any further. A solder sucker and solder wick was used to removed the old solder. Again, tried to be extra careful not to overheat the solder pad. I cleaned up the site and new relay with rubbing alcohol, applied a tiny bit of solder flux to the relay, inserted the new relay and soldered it to the board. The solder flowed out 100% on 3 pads and about 95% on the other two. I cleaned off any flux residue and put the box back together.
Here's a shot of the finished box. You can see the middle relay is different than the two above and below it.
This is not a difficult fix IF you are mildly proficient at soldering and have good soldering tools. This is a finesse job. Just take your time, pay attention, take pictures before and after disassembly. Check out this forum and YouTube for tips and tricks. You can do it!
I just replaced the fuel pump relay (R303) in my 2004 EB. Wanted to share my experience.
Symptoms - For about a year's time, the engine would occasionally stall out, or lose all power and run very rough. It didn't die very often, but if it did, it would restart right after. Then, it finally died and would not restart.
Based on reading the forums here I had suspected the fuel pump relay and had been meaning to check and replace if needed. The engine stopping forced me to jump in. Because the fuse box is pretty easy to remove, I skipped jumpering and testing, and went straight to removing the box. A quick inspection showed R303 partially melted and one solder connection fully degraded.
New relay sourced from Amazon (Omron G8QN) for approx $6.00. I've read in several places that this is an upgraded replacement for the original Omron F8YF-BA relay.
I carefully unsoldered the bad relay being extra careful to not apply too much heat. I didn't want to damage the degraded solder pad any further. A solder sucker and solder wick was used to removed the old solder. Again, tried to be extra careful not to overheat the solder pad. I cleaned up the site and new relay with rubbing alcohol, applied a tiny bit of solder flux to the relay, inserted the new relay and soldered it to the board. The solder flowed out 100% on 3 pads and about 95% on the other two. I cleaned off any flux residue and put the box back together.
Here's a shot of the finished box. You can see the middle relay is different than the two above and below it.
This is not a difficult fix IF you are mildly proficient at soldering and have good soldering tools. This is a finesse job. Just take your time, pay attention, take pictures before and after disassembly. Check out this forum and YouTube for tips and tricks. You can do it!