displaying posts 1 to 8 of 8

Author Subject: Fuel Pump Relay FAQ
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

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Post #1
If you are having problems starting your car, and have identified that you are not getting any fuel to the fuel rail, there is a good chance that the relay module has died.

This unit is attached to the back of the ecu box in the engine bay, and is held on by a small nut.

To remove this relay:

1. Undo the nut (8 or 10mm)
2. Check that there is not a locking pin across the 2 red pins
3. Pull the red tab out and wiggle the relay loose.

Once removed you can check to see if the relay is faulty by bypassing it. This is done by connecting up a wire to pin 5 and 8 on the wiring loom connector. This should mean that when the ignition is on the fuel pump will constantly be running.

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 23:24
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

Posts: 10,012

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Post #2
If this proves successful, and you can here the fuel pump run when the ignition is on, you can safely assume that the relay is broken, providing you have not changed anything else at the same time.

To check to see if the relay is working as it should do you can check the resistance across the pins using a multimeter, as described below:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 21:58
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

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Post #3
Continued:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 22:04
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

Posts: 10,012

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Post #4
Checking Fuel operation:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 22:05
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

Posts: 10,012

Status: Offline

Post #5
Continued:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 22:06
smighall

Smeg-all

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Registered: 03 Mar 2005

Posts: 10,012

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Post #6
Engine Operation:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 22:07
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

Posts: 10,012

Status: Offline

Post #7
Continued:

smighall has attached the following image:

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 22:07
smighall

Smeg-all

Location: b*tching and Whinging

Registered: 03 Mar 2005

Posts: 10,012

Status: Offline

Post #8
Once you have proved that the relay is faulty, you will need to purchase a new/used one. New ones are around 18 from Peugeot.

Part number is 1920 3N

I accept no responsibility for any damage caused to your cars whilst trying to follow the above instructions

________________________________________

Meh

Seat Leon Cupra FR / 306 GTI6 / Breaking 205 GTI6 / Caterham 7 / Mercedes Sprinter 311CDI LWB

Sold: Fisher Fury - Laguna DCI Estate - P1 306 XSI - E30 BMW 325i Baur Convertible - Daihatsu Fourtack - Suzuki GSXR600 - 205 Rallye
Posted 25th Feb 2007 at 23:22

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