Relays & Stuff
Discussion
Ok, for those on the FaceBook group, you will know that im having a few issues with my 400SE .. namely the fuel pump / gauge doesnt seem to be working.
When the ignition is on, the pump doesnt prime (engine does turn over ok though, so its not battery!).
Ive checked the fuses and they are all good, but Im wondering if its the relay (basically trying to rule out the cheaper options before I buy a new pump, or tow it to a garage).
This got me thinking, as the car is reasonably old, would it be worth while pulling the old relays and swapping them all for new ones ?
If so, what ones would I need ?
When the ignition is on, the pump doesnt prime (engine does turn over ok though, so its not battery!).
Ive checked the fuses and they are all good, but Im wondering if its the relay (basically trying to rule out the cheaper options before I buy a new pump, or tow it to a garage).
This got me thinking, as the car is reasonably old, would it be worth while pulling the old relays and swapping them all for new ones ?
If so, what ones would I need ?
Have you tried putting direct power on the pump to double check it's okay? Also it is the vacuum created in the engine that pulls the AFM butterfly open that in turn triggers the pump to run (assuming yours is a flapper?).
I have had a few issues with the relays loosing contact. I got a can of electrical contact cleaner and then pulled each relay out in turn and gave the contacts a good squirt of cleaner. If the pump, fuses, AFM are all working fine then apart from a wiring fault it has to be the relay. They do eventually wear out. It is easy enough to pull the suspect relay, put 12v across it and check that the contacts are indeed opening and closing correctly.
Personally I wouldn't go to the expense of swapping all the relays - in my mind "they don't make them like they used to" with way too many nasty imported components on the market. I'd try and pinpoint which relay is at fault and just swap that one out if need be.
Cheers.
I have had a few issues with the relays loosing contact. I got a can of electrical contact cleaner and then pulled each relay out in turn and gave the contacts a good squirt of cleaner. If the pump, fuses, AFM are all working fine then apart from a wiring fault it has to be the relay. They do eventually wear out. It is easy enough to pull the suspect relay, put 12v across it and check that the contacts are indeed opening and closing correctly.
Personally I wouldn't go to the expense of swapping all the relays - in my mind "they don't make them like they used to" with way too many nasty imported components on the market. I'd try and pinpoint which relay is at fault and just swap that one out if need be.
Cheers.
Getting under the car is an option... I dont have the time to do that at present, Hence its easier to swap things like relays / fuses (Think of it as preventative too ... ie replace old stuff that "Could" go faulty later on"
.. No fuel cutoff as far as I am aware on Hotwire 400SE's ...
Yes, stabbing at the dark at present, hoping its a simple quick solution
.. No fuel cutoff as far as I am aware on Hotwire 400SE's ...
Yes, stabbing at the dark at present, hoping its a simple quick solution
Jas
I thought on these it was red relay that was different to all of the other relays for the fuel pump issues, so not able to swap about but need to replace with another red relay ?
Mind you I'm going back a few years on my old memory
I'll try and dig the manuals out from the loft and have a look tomorrow
Might even have a one in my box of spares in the garage, I know I've got about 20 black type relays spare
Also thought that on the RR hotwire there was a fuel cut off switch somewhere so may well be lurking somewhere
Ta
Paul
I thought on these it was red relay that was different to all of the other relays for the fuel pump issues, so not able to swap about but need to replace with another red relay ?
Mind you I'm going back a few years on my old memory
I'll try and dig the manuals out from the loft and have a look tomorrow
Might even have a one in my box of spares in the garage, I know I've got about 20 black type relays spare
Also thought that on the RR hotwire there was a fuel cut off switch somewhere so may well be lurking somewhere
Ta
Paul
Edited by gsx600 on Tuesday 18th July 22:43
SEvans said:
One other possibility is the immobiliser if you have one fitted? I think it's common practice to fit this to the fuel pump. Cheers Steve
My immobilizer works on the ignition .. if I donot present the token to the reader, there is no ignition, no dashboard lights at all ... When I present the token to the reader, I can turn the car over,JVaughan said:
SEvans said:
One other possibility is the immobiliser if you have one fitted? I think it's common practice to fit this to the fuel pump. Cheers Steve
My immobilizer works on the ignition .. if I donot present the token to the reader, there is no ignition, no dashboard lights at all ... When I present the token to the reader, I can turn the car over,Gassing Station | Wedges | Top of Page | What's New | My Stuff