What is the correct voltage from relay to inertia switch. I have 12+ volts into relay, and 6.4 volta to inertia swith and pump. Is that enough volts to run pump?

10

Asked by David Dec 05, 2015 at 11:41 AM about the 2001 Mercury Grand Marquis LS

Question type: Maintenance & Repair

engine cranks-no start. Spark test good. runs on carb cleaner. Low voltage
from relay.

2 Answers

10

Turns out the (bad) fuel pump ground was causing the drop in voltage. I replaced the pump by jacking the diff up as high as I could, and then placing jack stands under the frame and then dropping the diff. This created plenty of room the remove the fuel sending unit. I cut the 3 wires for the gauge at unequal length and the soldered and heat shrink sealed after installing the new pump. Entire job took about 1-1 and half hours.

1 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,670
  • #2
    Trippmeister
    Reputation
    5,040
  • #3
    Bob Beaman
    Reputation
    3,740
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Lincoln Town Car
4 listings starting at $9,995
Used Ford Crown Victoria
2 listings starting at $8,960
Used Ford F-150
363 Great Deals out of 12,802 listings starting at $599
Used Chevrolet Impala
11 Great Deals out of 136 listings starting at $3,990
Used Ford Mustang
61 Great Deals out of 1,603 listings starting at $6,500
Used Toyota Camry
44 Great Deals out of 1,140 listings starting at $3,900
Used Buick LeSabre
1 listing
Used Chevrolet Silverado 1500
222 Great Deals out of 9,112 listings starting at $2,900
Used Lincoln Continental
9 listings starting at $26,999
Used Chevrolet Tahoe
18 Great Deals out of 859 listings starting at $9,980
Used Ford Explorer
53 Great Deals out of 2,231 listings starting at $7,990

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.