Say your accelerator jammed

Feb 04, 2010 93 Replies

my wife's 96 Lexus has a vacuum servo and abs

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Some have replied that it *might*. It might indeed. It might be programmed to turn sharp left as soon as it reaches 120mph. Bet it isn't, though.

Where is the servo?

apparently the lhd version has a servo and it takes 2.3 hours to change it, so it is probably remote.

Well, I wouldn't want this government to do anything because it would another c*ck up.

Rob Graham

With keyless ignition, you need to have a fob with you. Does the car stop working if you throw that out of the window and leave it miles behind?

It's OK. The populist 'mob rule' media are now on the case like a pack of wolves, and that will render government ideas and policies ineffective anyway.

Toyota's reputation is getting royally trashed. I think their PR department is thinking very carefully on which publications they place future advertising with.

:-(

Cutting fuel isn`t always enough on a diesel, have found that one out...

Diesel Citroen AX, post mortem reckon overfilled with oil due to checking level on a slope, took a couple of weeks to manifest though.

70 outside lane dual carriageway, back off throttle because if traffic,

Nothing happens,

Pump throttle thinking its sticky,

Nothing happening

Hang on something is happening

bitch is accelerating,oooops

Turning ignition off has no effect

oh dear or words to that effect, look for candid camera boom attached to car , its missing , this really is happening.

put clutch in and knock it into neutral only solution, engine life not really important if not extant myself

Lean on brakes which do a worrying fade as pull accross 2 lanes looking like a shot down Stukka trailing thick black smoke. Really would have been good as a spectator.

Eventually stopped and then stalled engine against brakes by crashing it into 4th.

Compression was fine after, none of the bearings sounded too good though.

Top tip whan AA are giving you `the may be some time` treatment, sound of fire engines in background gets them there a bit quicker.

Actual reason , as diagnosed by this group at time, was thing started burning its own engine oil via the breather pipes, cutting diesel supply made no odds, suggestion here was a large wooden ball for the air intake has been known on static set ups.

Cheers Adam

[...]

Official VAG workshop training for a runaway diesel is to try to throw water into the air intake to stall it. If this fails, evacuate the workshop and wait for the bang.

Chris

Adam Aglionby wibbled on Tuesday 09 February 2010 20:50

Indeed it isn't - but in the bounds of the problem being discussed which centres on electronics going dolally, it's the best that can be almost trivially achieved (main engine management and fuel pump(s) power is physically routed through a hard-to-accidently but easy-to-do-an-emergency- operation switch on the dash. Oh, I seem to have reinvented the original ignition switch!

This other problem (secondary fuel ingress, aka lubricating oil) would need an additional solution akin to the one you mentioned, cutting off the air.

Wonder how hard to would be to have a cable operated flap and a pull knob on the dash? Probably be siezed up first time it was needed though...

Chris Whelan wibbled on Tuesday 09 February 2010 21:31

That leads to the interesting idea of diverting the engine coolant (after the pump) to the air intake as an emergency measure. Not sure hydraulicking the engine in gear would feel good at 70mph though... And you'd *never* be able to test the mechanism to see if it was working (bit like the old Morris Minor 2nd Amber instrument warning light - "oil filter blocked" - did that

*ever* come on?)

You're not trying to hydraulic lock it, burning premixed oil and air is fairly inefffecient

if you're in neutral & your brakes are fading at 70mph then you really want to go & have words with whoever sold you the pads, the 1960s where over 40 years ago.

So , as always, stand on the brake pedal works lovely.

Don't remember seeing that on any A series engine. What version of Minor had it?

My experience is perhaps limited, but of the Selection of less than 10 year old VWs, Audis, Peugeots, Saabs and Mazdas I've worked on recently, all definately have vacuum servo with their ABS.

Perhaps manufacturers are moving away from it now.

Haha, someone should have told PSA! The brakes on small-engined AXs and

106s are woefully easy to persuade to fade.

Dave Plowman (News) wibbled on Wednesday 10 February 2010 00:57

Traveller 1000 circa '63. I thought most Minor's/Minis of that era with the big central speedo had the same basic 4 lights (battery-charging [red], fullbeam [blue], oil-pressure, oil-filter [both amber])?...

Duncan Wood wibbled on Wednesday 10 February 2010 00:18

No, just musing what would happen if...

So that presumably would make it more of a go-er to stall with the brakes?

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