Leaving car in gear when parked

Leaving car in gear when parked

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Discussion

watchnut

1,166 posts

129 months

Thursday 12th July 2018
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Like most I always leave it in gear.

If car to be left standing for a while OFF ROAD, i leave handbrake OFF, as I had a mark 3 escort that I parked up for a month once and came back, started ok, rear wheels locked on, so rocked car back and forth to try and release....they wouldn't, so a mate said just drive off and see what happens....so I did, after about 30m in second gear they released with a big bang....hand brake was ok, just seized on with damp, and being on too tight

We lived on a road which was also a hill, a neighbours car slipped it's handbrake......hit about 12 cars before it stopped....there was nearly a street riot!

On a hill leave wheels turned into kerb, if it slips handbrake and gear it will only roll against kerb....modern driving instructors teach/advise this....well this one does smile

Pica-Pica

13,787 posts

84 months

Friday 13th July 2018
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watchnut said:
Like most I always leave it in gear.

If car to be left standing for a while OFF ROAD, i leave handbrake OFF, as I had a mark 3 escort that I parked up for a month once and came back, started ok, rear wheels locked on, so rocked car back and forth to try and release....they wouldn't, so a mate said just drive off and see what happens....so I did, after about 30m in second gear they released with a big bang....hand brake was ok, just seized on with damp, and being on too tight

We lived on a road which was also a hill, a neighbours car slipped it's handbrake......hit about 12 cars before it stopped....there was nearly a street riot!

On a hill leave wheels turned into kerb, if it slips handbrake and gear it will only roll against kerb....modern driving instructors teach/advise this....well this one does smile
Into the kerb if facing downhill, away from the kerb if facing up hill. That minimises the distance for a ‘loose’ vehicle to roll.
That has been taught forever, AFAIK.

dhutch

14,388 posts

197 months

Saturday 14th July 2018
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Saw a HB failure as a kid outside school.

The BMW has such bang HB it's always in gear, kitcar often has the HB tapped up to make it fly-off for autotesting, so in the garage it's in gear. Stops the HB sticking too.


Daniel

Huff

3,155 posts

191 months

Saturday 14th July 2018
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- I use good, old-fashioned chocks for that, even on the level; no need to leave it in gear.

Jambo85

3,319 posts

88 months

Monday 16th July 2018
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OldGermanHeaps said:
That can bite you in the arse one day, timing chains can slip a tooth if the engine gets turned backwards.
That was pretty much my understanding too - tensioners are designed to work when the engine is being rotated the right way... Slacken them off, timing is out... bad news for most engines.

With that in mind I'm surprised to read that most people choose reverse when facing downhill and first when facing up - I do the opposite so that the engine isn't being rotated the wrong way. But I accept it is unlikely to be an issue as it shouldn't rotate much, if at all.

My daily driver is an Audi S4 which is notorious for timing chain/tensioner issues so that influences my view on this..!

Am I being thick and missing something here?

Ransoman

884 posts

90 months

Monday 16th July 2018
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Jambo85 said:
That was pretty much my understanding too - tensioners are designed to work when the engine is being rotated the right way... Slacken them off, timing is out... bad news for most engines.

With that in mind I'm surprised to read that most people choose reverse when facing downhill and first when facing up - I do the opposite so that the engine isn't being rotated the wrong way. But I accept it is unlikely to be an issue as it shouldn't rotate much, if at all.

My daily driver is an Audi S4 which is notorious for timing chain/tensioner issues so that influences my view on this..!

Am I being thick and missing something here?
I do this too. On the rare event I park in gear.

Old habits and all that. I only park in gear when on a hill or when I suspect the handbrake. I always keep the handbrake well maintained.

However.. Having seen how easy it is to release the handbrake on an "in disk" shoe setup (Volvo, porsche etc) by rotating the wheel the wrong way, I wouldn't leave a car with that type of handbrake on just the handbrake alone.

OldGermanHeaps

3,830 posts

178 months

Monday 16th July 2018
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Handbrake on and in gear should be ok, as even a half baked handbrake is still offering some resistance so the movements to the engine are less severe, a bit dampened. Its when the handbrake is fully off and the vehicle can rock back or forward on the drivetrain backlash that can jolt the chain off by a few teeth. I'm in my mates garage quite a lot and its at least a monthly occurance for a car or more usually a merc or renault van as the handbrakes are a disposable consumable on them to come in with a fked engine and inop handbrake, and when you ask they say "oh yeah, the handbrake hasnt worked for a couple of months but i have just been leaving it in gear, i didnt have the time to bring it in and thats the third set of cables its had"

Jambo85

3,319 posts

88 months

Monday 16th July 2018
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Interesting - but I can't see what the issue would be with rocking/turning the engine forwards?

jamei303

3,002 posts

156 months

Monday 16th July 2018
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I leave in gear although my IAM instructor I had about 10 years ago told me not to because if someone else were to drive the car they might start the engine without noticing causing the car to lurch forward and murder a child or something.






storminnorman

2,357 posts

152 months

Monday 16th July 2018
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I used to do it when I had a Peugeot 306, because the handbrake cable was a common failure on those cars.

These days I don't bother, because I live in Lincolnshire.

Veryoldbear

218 posts

104 months

Tuesday 17th July 2018
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If you have a Saab there isn't an option

Bigends

5,418 posts

128 months

Wednesday 18th July 2018
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OldGermanHeaps said:
Handbrake on and in gear should be ok, as even a half baked handbrake is still offering some resistance so the movements to the engine are less severe, a bit dampened. Its when the handbrake is fully off and the vehicle can rock back or forward on the drivetrain backlash that can jolt the chain off by a few teeth. I'm in my mates garage quite a lot and its at least a monthly occurance for a car or more usually a merc or renault van as the handbrakes are a disposable consumable on them to come in with a fked engine and inop handbrake, and when you ask they say "oh yeah, the handbrake hasnt worked for a couple of months but i have just been leaving it in gear, i didnt have the time to bring it in and thats the third set of cables its had"
Not sure how that would cause the belt or chain to jump teeth

OldGermanHeaps

3,830 posts

178 months

Thursday 19th July 2018
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Do you know about backlash and how an automatic chain tensioner works?