1991 Volvo 740 stalls when hot, replacing parts by chance

[janefinch]

Ok I swapped out the two identical relays & with my fingers crossed hoping for a good result.... it stalled. Crap.
Decided to pay my Volvo dealer a visit to see if they had a fuel pump relay {behind ashtray} in stock which they did. $64.00 CAD. Installed the new relay and she run like a top. No stalling. Good for another 1/4 million miles or more.
The old relay was the original dated 1990.

Thanks so much for all your help!

[lummert]

Do you know how to solder? I repaired 3 fuel pump relays by re-flowing the solder on the circuit board. All the larger solder connections were cracked. I carefully pried loose the cover. I now carry 2 spare relays in the glove box. One of the relays that I repaired was dated 2005, Which was the year I purchased the car. So, they do occasionally quit working.

The FPR on my 1988 760 is different than on your 740, but the circuits are the same.

[janefinch]

Ok thanks. Did not see how the relay come apart. Will have another look later n& see.
Thanks!

Best video ever of the die hard Volvo 740 THE END

http://youtu.be/05W9u5e3LhE

[earcher0]

Had this exact same problem. After replacing radio suppression relay and fuel pump relay, the problem persisted. It eventually got bad enough that I had a 10 to 1 downtime ratio. (For every twenty minutes of cooling down, I was able to get another 2 minutes of run time.) So I sucked it up and had a shop replace the fuel pump (mine is a Regina with the single pump in the tank) it cost 480 with labor to remove thirteen gallons of rust filled gas water. Hasn't happened since.

[93Regina]

Regina...remove thirteen gallons of rust filled gas water

I think my 940 has a plastic/rubber tank...

[earcher0]

I think later year volvos have the benefits of a plastic tank.

[lummert]

I think later year volvos have the benefits of a plastic tank.

my 1988 760 Turbo wagon has a plastic tank.