Volvo RWD 700 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 10/2005 700 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Fuel pump issues 700 1989

posted by  m12builder on  Tue May 22 15:18 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Jan 12 10:02 CST 2010
[RELATED]

'89 740GLE (240K miles). During winter months (below 30°F), car would crank but not start, not even sputter, but when the temp rose about ~35°F she would turn right over. I figured the fuel filter was clogged and went to replace it. After replacing filter I believe I cross wired the main fuel pump.

Will this damage the pump?

I removed the main pump and put a head of gas into the inlet and applied the leads (both options) and no fuel was observed to flow through the pump even though she vibrated when hooked up in one of the twp possible wiring configurations. With the main pump removed, I was not getting any fuel flow from the tank pump.

Its seams really unlikely that the main and tank pumps would crap out at the same time. If it is the fuel pump relay how do I check the tank pump for proper voltage?

Any suggestions would be greatly apreciated.

Phil
--
'86 740T Sedan 235k (RIP), '96 850T Wagon 80k (sold), '95 850T Wagon 103k (current)






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Fuel pump issues [700][1989]
posted by  m12builder  on Tue May 22 15:18 CST 2007 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.