Engine Dies when shifted into reverse

I own a 1984 volvo that has a four speed transmission with overdrive button on top of the shifter. The engine sometimes dies when I pull up the lock and pull the shift lever to the left to go into reverse, After it dies I can jerk the shifter back and forth in and out of reverse and it will crank and run for anywhere from several days or until the next time that it is shifted into reverse again. It is a very annoying problem and no one can seem to help me figure it out. Can anyone help me?

Reply to
twa
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Change the starter inhibitor switch. It allows the car to start when in Park or Neutral. There is possibly a relay attached to the switch to keep the engine running when moving lever through all gear selections.

Cheers, Peter.

Reply to
Peter Milnes

I'm curious, where's "Park" on a manual transmission?

:-)

Gary

Reply to
Gary Heston

Reply to
Rob Guenther

It only dies when you are going to reverse, no other time. Also when it does this the reverse or backup lights are not on, if they are on it will run.

Reply to
twa

I suspect that you've got an intermittent short somewhere in the reverse light circuit (which is switched by a switch on the gear selector) and that this is somehow killing the ignition. You need to take a careful look at the wiring.

The more I think about it, the more I am convinced that the reverse light switch is somehow connecting the live feed to earth rather than to the reverse lights. It's probably doing it through a high enough resistance not to blow any fuses - but is reducing the ignition voltage sufficiently to stall the engine.

Reply to
Bonnet Lock

Bonnet Lock

I might stand corrected, but isn't the reverse light switch on the side the gear box, near the top somewhere, almost impossible to get at, unless you lower the rear of the gearbox, many apologies if by 'selector' you were referring to the entire selector mechanism. The OP's problem had me stumped at first so I left it until now, but what you suggest is very feasable, even more so given the 240's habit of developing high resistance fuse connections. So on the drain side of the relevant fuse, perhaps there intermittently isn't quite enough current squeezing through the fuseholder to illuminate the backup lamps, run the ignition ......, so it quits.

Just my 2 pennies worth

Ken Phillips

Reply to
Ken Phillips (UK)

The starter inhibitor switch also selects the reverse (back-up) lights so change the starter inhibitor switch, like I said.

Cheers, Peter.

Reply to
Peter Milnes

But there *isn't* a starter inhibitor switch on a manual transmission, which the original poster stated he has.

Reply to
James Sweet

This is off-topic, but are you Twa from Knox College, early 1970's? Bruce Pick

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twa wrote:

Reply to
Bruce Pick

Reply to
John Robertson

I don't think he *explicitly* said it was manual - but he did say that it was 4-speed with overdrive - so I assumed it to be manual, in which case - as you say - there *ain't* a starter inhibitor switch.

Reply to
Bonnet Lock

Yes, I was indeed using the term "gear selector" in a general sense. I am not familiar with this particular setup, but somewhere there will be a switch which is activated when reverse is selected - and this may be achieved in any of several ways.

It is highly likely that some of the wiring associated with this switch - wherever it is - is getting partially shorted to earth when reverse is selected.

Reply to
Bonnet Lock

No, that's not me. Sorry!

Reply to
twa

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