Volvo 940 low pressure turbo

Algord · May 26th, 2019, 18:01

First timer in need of help. We have replaced the fuel relay on the board behind the dash but now the car won't start and all the lights on the dash flash on and off. Any ideas?

Laird Scooby · May 26th, 2019, 18:08

First idea is what model, what engine, what sort of injection, model year, auto/manual, anything else relevant or even seemingly irrelevant.

Based on what you have said though, does it have an alarm/immobiliser on it? Did you disconnect the battery while fitting the new fuel pump relay and why did you fit a new one?

mocambique-amazone · May 26th, 2019, 18:49

Battery dead

Check the voltage with a multimeter. Without key and while trying to start.

Please answer the questions Dave did post
And: why did you change the (hopefully white) fuel relay?

Good luck , Kay

loki_the_glt · May 26th, 2019, 21:00

Immobiliser engaged?

Does the alarm come on or is there absolutely nothing except idiot lights?

Check that the relay is properly engaged and you haven't disturbed any other relay or fuses.

TonyS9 · May 31st, 2019, 22:25

The fuel relay is normally under the dash behind the ash tray. It won't affect the dash though.

But as other have said it sounds like you have set the alarm off. or you have replace the alarm instead??

If you didn't know you had an alarm, you may need to remove and bypass it, or it might just go back to normal if you remove the battery terminal and reattach more firmly. ie don't allow it to spark much.

The alarm electronics don't last well, my 95 car was done last year or so. Before that the transmitter range was reducing to nothing.

May 26th, 2019, 18:01	#1
Algord New Member Last Online: May 26th, 2019 18:19 Join Date: May 2019 Location: Wigan	Volvo 940 low pressure turbo First timer in need of help. We have replaced the fuel relay on the board behind the dash but now the car won't start and all the lights on the dash flash on and off. Any ideas?

May 26th, 2019, 18:08	#2
Laird Scooby Premier Member Last Online: Yesterday 23:44 Join Date: May 2012 Location: Lakenheath	First idea is what model, what engine, what sort of injection, model year, auto/manual, anything else relevant or even seemingly irrelevant. Based on what you have said though, does it have an alarm/immobiliser on it? Did you disconnect the battery while fitting the new fuel pump relay and why did you fit a new one? __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

May 26th, 2019, 21:00	#4
loki_the_glt Torquemeister Last Online: Yesterday 08:32 Join Date: Dec 2004 Location: Asgard, Cheshire	Immobiliser engaged? Does the alarm come on or is there absolutely nothing except idiot lights? Check that the relay is properly engaged and you haven't disturbed any other relay or fuses. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

May 26th, 2019, 18:49	#3
mocambique-amazone Master Member Last Online: Jan 24th, 2022 17:08 Join Date: Nov 2008 Location: small village in the north of Germany	Battery dead Check the voltage with a multimeter. Without key and while trying to start. Please answer the questions Dave did post And: why did you change the (hopefully white) fuel relay? Good luck , Kay

May 31st, 2019, 22:25	#5
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	The fuel relay is normally under the dash behind the ash tray. It won't affect the dash though. But as other have said it sounds like you have set the alarm off. or you have replace the alarm instead?? If you didn't know you had an alarm, you may need to remove and bypass it, or it might just go back to normal if you remove the battery terminal and reattach more firmly. ie don't allow it to spark much. The alarm electronics don't last well, my 95 car was done last year or so. Before that the transmitter range was reducing to nothing.

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