No power to fuel pump?

85CV

MEMBER
1985 FORD LTD
5.0L
V8
2WD
AUTOMATIC
112,000 MILES

There is no power to the fuel pump relay, in or out.

Friday, August 12th, 2022 AT 1:06 PM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

There is no fuel pump relay for this car? It is mechanical.

SPONSORED LINKS

Was this

answer

helpful?

Yes

Friday, August 12th, 2022 AT 4:08 PM

85CV

MEMBER
4 POSTS

Hello,

Thank you for the information, but this 1985 Ford LTD Crown Victoria has an in-tank electric fuel pump. Some models did have mechanical fuel pumps, but this one has an in-tank electric pump. Sorry. Any suggestions on how to check if there is no power to the fuel pump relay? Thank you.

Was this

answer

helpful?

Yes

Saturday, August 13th, 2022 AT 9:37 AM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Thank you. I looked for 1986 engine control and found it, there is an 18-gauge fusible link that goes bad near the starter solenoid, pull on each of them to see if one is rubbery. Here are the engine control and fuel pump wiring diagrams so you can see how the system works. Check out the diagrams (below). Please let us know what you find.

Images (Click to make bigger)

Was this

answer

helpful?

Yes

Saturday, August 13th, 2022 AT 12:39 PM

85CV

MEMBER
4 POSTS

Thank you, I'll give this a try.

Was this

answer

helpful?

Yes

Saturday, August 13th, 2022 AT 2:30 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Please let us know what you find. We are interested to see what it is.

SPONSORED LINKS

Was this

answer

helpful?

Yes

Monday, August 15th, 2022 AT 11:29 AM

85CV

MEMBER
4 POSTS

The problem turned out to be with the car's computer unfortunately. We used a fusible link to provide power to the fuel pump relay to bypass the issue at this point so the car runs. Thank you for your help.

Was this

answer

helpful?

Yes

Thursday, August 25th, 2022 AT 1:10 PM

KEN L