Imobilizer question.

[jaylee]

Is it possible to fit a immobiliser relay to the feed to the fuel pump as opposed to the starter?
I know the would be thief would just run the battery down in the event of hot wiring to attempt a start if the engine was starved of fuel..


I'm thinking a strategically placed fuel immobilizer relay would be easier to bypass in the event of an alarm fault.. (Not that i expect any!!)

[missfixit70]

Can't see why the stop solenoid couldn't be connected to the immobiliser, fuel pump itself is mechanical though.

[Aethelric]

You could fit a hidden tap in the fuel line.

[missfixit70]

You could fit a hidden tap in the fuel line.

Landrover stylee? Remember a mate years ago got hold of a MK1 really cheap, couldn't start it, tried tow starting it with a lorry & everything, he eventually found the little tap under the dash

[Colin H F]

I am posting this to make people aware of Cat 1 alarms. I had a cobra alarm fitted to a previous vehicle, one day when I returned to my vehicle my fob did not operate tried and tried to no avail I could open the doors with my keys but could not operate the cobra alarm, so I had to enlist the services of a specialist, and he had to by pass the four sets of wiring that had been conected to the alarm relay, one set was the feed to the fuel pump, £80 later I was mobile again and when I left the location where I was imobilised ,the cobra alarm started working again, I found out subsequently that where I was parked there was a BT transmitter above which interfered with my Cobra alarm, if I had known I could have pushed my car away from the signals and saved myself £80. and the same thing hapens with the wifes Focus alarm when we visit our holiday home which is fitted with a wireless alarm system, so be on your guard for wireless transmitters. Colin newbie

[g8dhe]

This is a quite well known problem, and a lovely money spinner for the local garages!

There are quite a few situations where this will happen mainly because they have allocated the Low Power Radio (LPR) band in the middle of a quite busy part of the radio spectrum, the allocation that causes the most grief is the 433MHz one, its in the middle of an MOD allocation and also an Amateur Radio allocation, both the MOD and Amateurs have repeaters working right next to that section so if you park on a hill top anywhere in a town don't be to surprised if you have problems Some of the Police TETRA transmitter sites are also known to cause problems.

If you have the chance specify when you have an alarm fitted that a 433MHz unit is NOT to be used, choose a different band!

[stringman]

I thought that CAT1 alarms had to have an additional override to prevent this problem. My Meta M99 has a sort of touch key device which I can use if the remote control fails

[g8dhe]

The two CAT1 alarms I've used both had such a mechanism, involving the ignition key / extra switch to key in a PIN code. Never had to use it in practice, with an alarm going off in my ear and trying to count key depressions and watch the LED flashing

[redalan1971]

mine has a hidden switch to override it with a pin code to type in.
i have to do this to stop the alarm from self arming so i can sleep in it.( a pain but at least the van is safer and i can't forget to arm it)