Fuel Pump Relay noise

GremlinMKIII · 06-17-2007, 10:18 PM

I've disconnected the AFM as per suggestion of a guy on another supra forum to check to see if the relay is still buzzing which it is.

I have come across some other developments in my troubles with the engine though...

turns out the alarm that was in the car is still in it and it may have a disabler as well - could be the reason for the car not starting? but when I jump Fp and +B in the diagnostic box, while shutting up the fuel pump relay, it causes something in the interior to beep for a few seconds, it stops, then pop! - the doors unlock.. (manual locks, power locks added via the alarm installation)

also, when not jumping Fp / +B and I apply the power - not only does the fuel pump relay buzz, it activates the Main fuse in the fuse box up front.

so, is it possible for a mucked up alarm to draw unnecessary power which activates the Main fuse, which in turn is mucking with the fuel pump relay?

thanks again.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
fuel pump relay buzzing	Deputy99	MKIII Supra	7	06-27-2008 02:58 AM
Fuel pump relay and pressure.	carfanatic89	MKIII Supra	8	05-01-2008 06:39 PM
MSD fuel pump?	redmaro	MKIII Supra	6	08-24-2007 04:09 PM
Testing for bad ECU, &/or bad Fuel Pump	elliotl	MKIII Supra	0	08-21-2007 10:42 PM
fuel pump relay	Supra2NR	MKIII Supra	4	05-18-2007 11:35 PM

06-17-2007, 10:18 PM	#8
GremlinMKIII Stock Join Date: Jun 2007 Location: Abbotsford, BC Posts: 9	I've disconnected the AFM as per suggestion of a guy on another supra forum to check to see if the relay is still buzzing which it is. I have come across some other developments in my troubles with the engine though... turns out the alarm that was in the car is still in it and it may have a disabler as well - could be the reason for the car not starting? but when I jump Fp and +B in the diagnostic box, while shutting up the fuel pump relay, it causes something in the interior to beep for a few seconds, it stops, then pop! - the doors unlock.. (manual locks, power locks added via the alarm installation) also, when not jumping Fp / +B and I apply the power - not only does the fuel pump relay buzz, it activates the Main fuse in the fuse box up front. so, is it possible for a mucked up alarm to draw unnecessary power which activates the Main fuse, which in turn is mucking with the fuel pump relay? thanks again.