fuel pumps

25

Asked by Jul 08, 2008 at 10:44 AM about the 1985 Ford Mustang

Question type: Maintenance & Repair

I've been told that there are 2 fuel pumps on this model. One in tank and one in line...somewhere. I have the 5.0 with CFI, automatic. Where is the second pump located at? Also, why would the wire leading from the relay for the in tank pump not get hot when the ignition is turned on? Lastly, was there a Mustang with a Police Interceptor package available in '85 and if so, what kind of set up did it have? Thanks.

1 Answer

280

In 1984-1986 there were some versions that had a low-pressure in-tank fuel pump AND a high-pressure in-line pump. VIN code M with a carb should be an engine-mounted mechanical pump. VIN code M with TBI should have an in-tank pump only. VIN code F with CFI would have two pumps. If yours has it, it should be plainly visible. Just follow the lines from the tank. It should be 4-6 inches long and cylinder shaped with the inlet and outlet located on the ends. Check out: http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528004e110 The wire from the relay SHOULDN'T get hot unless there is a problem. If you suspect an issue, use a voltmeter to check the wire. If the wire gets hot, that indicates too much power going through a wire that's probably not big enough to handle it (either poor wiring, faulty wire, or a short somewhere). There was a Severe Service Package (SSP) Mustang available from late 1982 to 1993. The 1985 was available with either a VIN code M, 5.0L with 4Bbl carb (210hp/270ft-lbs) or a VIN code F, 5.0L Central Fuel Injection (CFI) (180hp/260ft-lbs). The carb version should have an engine mounted mechanical fuel pump and the CFI normally would be a two-pump version, but it may only have one for greater reliability, although I can't find anything to confirm that theory. Check: http://www.sspmustang.org/

Your Answer:

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    5,150
  • #2
    F_O_R
    Reputation
    1,700
  • #3
    Bob Beaman
    Reputation
    1,440
View All

Related Models For Sale

Used Chevrolet Camaro
233 Great Deals out of 26,932 listings starting at $4,000
Used Dodge Charger
317 Great Deals out of 31,958 listings starting at $1,500
Used Chevrolet Corvette
82 Great Deals out of 15,086 listings starting at $3,700
Used Ford F-150
2,281 Great Deals out of 188,281 listings starting at $1,300
Used BMW 3 Series
987 Great Deals out of 30,188 listings starting at $900
Used BMW M3
16 Great Deals out of 1,500 listings starting at $4,995
Used Honda Accord
664 Great Deals out of 101,953 listings starting at $999
Used Honda Civic
462 Great Deals out of 44,737 listings starting at $1,150

Used Cars For Sale

2018 Ford Mustang For Sale
16,750 listings starting at $12,950
2017 Ford Mustang For Sale
107 Great Deals out of 5,881 listings starting at $15,995
2016 Ford Mustang For Sale
38 Great Deals out of 2,354 listings starting at $12,499
2015 Ford Mustang For Sale
24 Great Deals out of 2,398 listings starting at $12,991
2014 Ford Mustang For Sale
20 Great Deals out of 1,769 listings starting at $7,986

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.