Terry Field Posted December 22, 2016 Report Share Posted December 22, 2016 Right out of the blue, turned the ignition on and not a sound from the Bosch pump. So no fuel getting through. It was fine last week when I had to turn the ignition on briefly to test an auxiliary circuit. What to do? Terry Quote Link to post Share on other sites
RogerH Posted December 22, 2016 Report Share Posted December 22, 2016 Hi Terry, firstly check for 12V at the pump. Check the earth strap/wiring. Panic Roger Quote Link to post Share on other sites
RobH Posted December 22, 2016 Report Share Posted December 22, 2016 Fuse? Quote Link to post Share on other sites
RogerH Posted December 22, 2016 Report Share Posted December 22, 2016 Inertia switch Roger Quote Link to post Share on other sites
Guest ntc Posted December 22, 2016 Report Share Posted December 22, 2016 Inertia switch Roger +1 safe bet Quote Link to post Share on other sites
Steves_TR6 Posted December 22, 2016 Report Share Posted December 22, 2016 (edited) Inertia switch - pull plunger up and push it down again, clean, replace Fuse - replace, but why did it blow? Relay - test/replace Dodgy earth - spend ages tracking down dodgy earth to relay and pump :-) One of the above, probably :-) Edited December 22, 2016 by SDerbyshire Quote Link to post Share on other sites
Terry Field Posted December 22, 2016 Author Report Share Posted December 22, 2016 I don't have full access to the car at the moment (surrounded by other 'junk'), but I have wiggled the inertia switch and checked the fuses. The fuses look OK, but I tried the indicators and the N/S ones work fine, but on the O/S I get non flashing lights at the front and no lights at all at the rear! Does this indicate anything, other than perhaps a blown bulb? Terry Quote Link to post Share on other sites
Peter Cobbold Posted December 22, 2016 Report Share Posted December 22, 2016 Indicator flasher capsule is above passenger's left foot. Known failure point. That wont affect the fuel pump.And I would as Roger and Neil have said first suspect the inertia switch - link the two wires under it together ( ensure neither can touch earth!) as a thorough test. Peter Quote Link to post Share on other sites
Terry Field Posted December 22, 2016 Author Report Share Posted December 22, 2016 Just tried Peter's tip and, yes, it is the inertia switch. I'm learning a lot about my new TR 6 very rapidly Terry Quote Link to post Share on other sites
Peter Cobbold Posted December 22, 2016 Report Share Posted December 22, 2016 Just tried Peter's tip and, yes, it is the inertia switch. I'm learning a lot about my new TR 6 very rapidly Terry Its a nasty failure point that TR6ers need to beware of- it can fail while driving without warning, leaving a dead engine. Very dangerous if it fails while overtaking etc. There's modern replacements that do the job reliably. Peter Quote Link to post Share on other sites
Terry Field Posted December 22, 2016 Author Report Share Posted December 22, 2016 Hi Peter Yes there is a modern replacement - Rimmers want £53 for it, but I guess there is no alternative. It looks quite a bit more complex - does anyone have any experience of fitting one? Thanks Terry Quote Link to post Share on other sites
Peter Cobbold Posted December 22, 2016 Report Share Posted December 22, 2016 Hi Peter Yes there is a modern replacement - Rimmers want £53 for it, but I guess there is no alternative. It looks quite a bit more complex - does anyone have any experience of fitting one? Thanks Terry Terry, Recent thread here: http://www.tr-register.co.uk/forums/index.php?/topic/59400-inertia-switch/?hl=%2Binertia+%2Brover&do=findComment&comment=496108 -someone who has done the replacement will be along. Peter Quote Link to post Share on other sites
MostEasterlySteve Posted December 22, 2016 Report Share Posted December 22, 2016 Just bypass it. Join the wires together. Early PI cars didn't have it anyway. Quote Link to post Share on other sites
Peter Cobbold Posted December 22, 2016 Report Share Posted December 22, 2016 (edited) Just bypass it. Join the wires together. Early PI cars didn't have it anyway. Mine is bypassed- after two on road fails - but my SU is not a serious fire risk in a collision. Unlike 105psi fuel lines. I suppose a risk analysis has to compare the consequences of a failing Lucas switch killing the engine on the road, with the risk of fire from fuel spraying after a collision. So I think I agree with you, if the switch is dodgy - and many are. A suddenly dead engine is more likely than a collision resulting in a fuel fire. That said, a reliable switch is the safest solution. Peter Edited December 22, 2016 by Peter Cobbold Quote Link to post Share on other sites
marki Posted December 22, 2016 Report Share Posted December 22, 2016 Mine cut out this year, 80 MPH outside lane overtaking a lorry. Lots of screaming from the passenger seat. Change it for one that works. Mark. Quote Link to post Share on other sites
Steves_TR6 Posted December 22, 2016 Report Share Posted December 22, 2016 (edited) The inertia switch sold by Moss etc seems to be also fitted to Jaguar/Rover/Range rovers And is therefore available more cheaply elsewhere? Edited January 20, 2019 by Steves_TR6 Quote Link to post Share on other sites
MostEasterlySteve Posted December 22, 2016 Report Share Posted December 22, 2016 Mine is bypassed- after two on road fails - but my SU is not a serious fire risk in a collision. Unlike 105psi fuel lines. I suppose a risk analysis has to compare the consequences of a failing Lucas switch killing the engine on the road, with the risk of fire from fuel spraying after a collision. So I think I agree with you, if the switch is dodgy - and many are. A suddenly dead engine is more likely than a collision resulting in a fuel fire. That said, a reliable switch is the safest solution. Peter Yes I agree it's got to be a rational decision for each individual. I weighed it up. My inertia switch never failed and in fact I have a spare kicking around somewhere. But I felt the chances of a smash that results in 105 psi of fuel spraying everywhere was really vanishingly small compared to the possibility of failure of the switch. It's a judgement we can all make and I guess we wouldn't all arrive at the same conclusion. Quote Link to post Share on other sites
Ragtag Posted December 23, 2016 Report Share Posted December 23, 2016 Bypassing the inertia switch, on a car that has it fitted as standard, would be a 'modification' that you should inform your Insurance Company about. Quote Link to post Share on other sites
JohnG Posted December 23, 2016 Report Share Posted December 23, 2016 Right out of the blue, turned the ignition on and not a sound from the Bosch pump. So no fuel getting through. It was fine last week when I had to turn the ignition on briefly to test an auxiliary circuit. What to do? Terry Terry, Recent thread here: http://www.tr-register.co.uk/forums/index.php?/topic/59400-inertia-switch/?hl=%2Binertia+%2Brover&do=findComment&comment=496108 -someone who has done the replacement will be along. Peter Terry The one Peter referred to is mine. So far . . .touch wood, it is fine. I've done about 200 miles since fitting it and all seems well. If you want to PM me, I can sent pictures and details of where it came from and how I fitted it. I have had the car 3 years, it had no switch when I got her and I have fitted 2 of the original type. I'm happier with the one I have now. Personnally, with petrol at 105psi, in a car built in the 1970's by the UK auto industry, I want the fuel to stop flowing in a shunt (or worse) Quote Link to post Share on other sites
brucer Posted December 24, 2016 Report Share Posted December 24, 2016 I picked an inertia switch up from the local brakers for £2. I think it was off an old rover. The one on my car was disconnected when I got it and was corroded inside. Bruce Quote Link to post Share on other sites
Tim D. Posted December 25, 2016 Report Share Posted December 25, 2016 Also fitted on of these rover items. You can get them cheap from eBay and appart from finding a way to attach it to the bulkhead it is just a case of attaching it to the two wires in the loom. Tim Quote Link to post Share on other sites
KiwiTR6 Posted January 8, 2017 Report Share Posted January 8, 2017 Purchased a Mondeo item off UK ebay, the same as this one with a section of wiring (also the same supplier I think). http://www.ebay.co.uk/itm/FUEL-PUMP-INERTIA-CUT-OFF-SWITCH-KITCAR-WESTFIELD-RALLY-RACE-/322377392934?hash=item4b0f30a326:g:wbAAAOSw8w1X6-pM These weren't fitted to the euro Fords that came to NZ apparently (?) so I couldn't get one locally. Haven't actually fitted it yet, but its high on the to-do list. The previous owner removed the original switch and installed a manual isolating switch in the glove-box I plan to mount the Mondeo item in its place so my beloved doesn't have to go hunting too far if it trips out for any reason. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.