98 mustang fuel pump power

Asked by GuruL9YPW Mar 19, 2019 at 02:08 PM about the 1998 Ford Mustang Coupe RWD

Question type: Maintenance & Repair

I’m trying to help a friend with a 98
mustang that stopped
running/starting.   I put a gauge on it
and got no pressure on the fuel line.  
Fuse is ok, but I can’t get a reading
on the multimeter off the harness in
the rear by the tank.  When I whack
the inertia switch, it makes a noise,
but the button doesn’t pop up.  I
pushed the button up w a screwdriver
and repushed it down.   Do you think
it’s the inertia switch, and if not, what
should I check?

2 Answers

75

The 98 is the first year with a returnless style fuel system. The fuel pump is driven by the ecu which sends a signal to a fuel pump driver that sends voltage to the pump. There is also a fuel psi monitor on the fuel rail. Does the fuel pump make noise for 2 seconds when you turn the key on for the first time before starting? If not then it could be the pump itself or the fuel pump driver. I sadly had to learn all this using a 98 PCM in a 97 to control a 2004 motor. The ccrm is located under the passenger side fender, this controls the fan and fuel pump relay. The fuel psi regulator and sensor is on the fuel rail. I am not sure exactly where the fuel pump driver is located.

4 people found this helpful.
10

I'm trying to find out if the red button for the fuel pump on a 1998 mustang should be be stuck down at all times it seems like I'm not getting fuel how can I check it

1 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    3,160
  • #2
    Bob Beaman
    Reputation
    2,690
  • #3
    rst429
    Reputation
    2,650
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Camaro
20 Great Deals out of 281 listings starting at $7,995
Used Chevrolet Corvette
27 Great Deals out of 1,082 listings starting at $15,000
Used Ford F-150
309 Great Deals out of 13,933 listings starting at $1,712
Used BMW 3 Series
65 Great Deals out of 1,229 listings starting at $2,500
Used Chevrolet Silverado 1500
195 Great Deals out of 5,877 listings starting at $2,975
Used BMW M3
3 Great Deals out of 93 listings starting at $15,995
Used Ford Mustang SVT Cobra
4 listings starting at $19,900
Used Honda Civic
195 Great Deals out of 4,054 listings starting at $440
Used Toyota Supra
73 listings starting at $49,777
Used Toyota Camry
60 Great Deals out of 1,072 listings starting at $3,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.