Auto box changing up too soon

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D366Y
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Auto box changing up too soon

Post by D366Y »

Ok so I'm clearly having a total rookie moment....
I adjusted the points the other day as it was running rough as arseholes and the gap had dwindled to basically nothing so set it back to .45mm.

Car now runs healthier, but was revving all over the place so set timing again - line up 8 degrees, check markers on top of rocker line up, turn on ignition and turn dizzy to point where the points are just opening (listening/looking for the spark), then lock back in place.

The gearbox is now shifting into 2nd at 20 and 3rd 40/45 with my foot planted to the floor. Previously it used to change into 2nd around 35ish and third at about 70ish with foot flat to the floor. This also means it doesn't kick down gears at all when you boot it so overtaking some slowpoke is basically impossible.

Clearly I have ballsed something up because I have tried advancing or retarding the timing just by rotating the dizzy but all I am doing is increasing the revs at idle and everytime I take it for a run after adjusting it nothing changes

Any ideas??
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Re: Auto box changing up too soon

Post by Mr B »

Hi mate,

Quick question, is there a reason why you didn't replace the points?

Only asking as the last time I checked and tried to set the point's on my car I found it impossible to get the gap right, turns out that over a period of time metal/tungsten transfers over from one half of the point's to the other half even if the condenser is working correctly and this creates a 'pimple' on one half of the point's that stops you from setting the gap correctly with feeler gauges (someone on here can probably explain this a lot better than me)

Not sure this explains your shifting problem but I would definitely replace those points if they closed up that amount.

Again not sure if this helps but the vacuum advance line hasn't become disconnected by any chance has it as you have been working in that area?

Hope this helps in some way

Wayne
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T.M.
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Re: Auto box changing up too soon

Post by T.M. »

Hi,
I don't have automatic gearbox, so just guessing.

It looks to me that gearbox "don't know" about position of throttle pedal. There should be some cable or linkage from throttle lever on carburetor to gearbox, right? Isn't this broken or badly set or anything?

But it's probably long shot. :)


Tom
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Re: Auto box changing up too soon

Post by pbar »

Mr B wrote: Fri May 06, 2022 12:13 am Hi mate,

Quick question, is there a reason why you didn't replace the points?

I was thinking the same, I find it pointless ( :) ) to try and reset the points, much better off replacing if you can.
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Re: Auto box changing up too soon

Post by Mc Tool »

T.M. wrote: Fri May 06, 2022 5:03 am Hi,
I don't have automatic gearbox, so just guessing.

It looks to me that gearbox "don't know" about position of throttle pedal. There should be some cable or linkage from throttle lever on carburetor to gearbox, right? Isn't this broken or badly set or anything?

But it's probably long shot. :)


Tom
plus one for that . and the vacuum hose :)
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D366Y
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1980 3.0S, crash damage resto
1993 Fiesta 1.1

Currently full up and no more space but I still want a 2.8...
Location: Buckinghamshire

Re: Auto box changing up too soon

Post by D366Y »

I didn't change the points because these weren't that old and I figured I could just adjust them - for the sake of a fiver I will change them and see if it makes a difference

The vacuum hose is definitely still attached, and I have only just now seen the cable from the carb to the gearbox - never even knew there was one but it looks ok...??

The gearbox does have slightly too much oil in it according to the marker, but considering it worked fine before I adjusted the points I can't see that being the cause...

Will get new points and come back to you!
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Re: Auto box changing up too soon

Post by Mr B »

I once had a C3 autobox that went absolutely nuts, changing up gears when not needed and all sorts of other nutty things, turns out the vacuum modulator on the side of the 'box had failed so this may be worth checking, there's a vacuum line from the box to the inlet manifold, pull it off at the manifold end and see if its wet inside - if wet the modulator has failed, also check that the vacuum line itself is in good order whilst your at it.

Can't remember whether it affected the 'kick down' though as the kick down is via a cable as stated above.

Wayne
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D366Y
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Car(s): 1986 Laser 1.6, daily runaround project
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1980 3.0S, crash damage resto
1993 Fiesta 1.1

Currently full up and no more space but I still want a 2.8...
Location: Buckinghamshire

Re: Auto box changing up too soon

Post by D366Y »

Thanks Wayne will give that a goose when I next get under it!

I would have changed the points today but the points that Crap Club International have sent me are backwards so face the wrong way??
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Re: Auto box changing up too soon

Post by Mr B »

D366Y wrote: Tue May 10, 2022 1:21 pm Thanks Wayne will give that a goose when I next get under it!

I would have changed the points today but the points that Crap Club International have sent me are backwards so face the wrong way??
Yep those points look like they are for an Essex V6 Ford dizzy.

CCI Strikes again :banghead:
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D366Y
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1980 3.0S, crash damage resto
1993 Fiesta 1.1

Currently full up and no more space but I still want a 2.8...
Location: Buckinghamshire

Re: Auto box changing up too soon

Post by D366Y »

Mr B wrote: Tue May 10, 2022 11:11 pm

Yep those points look like they are for an Essex V6 Ford dizzy.

CCI Strikes again :banghead:
Yep - why ask for the model of the car when ordering just to put the wrong one in??
To be fair, I called, told them they had messed up and they said they will post me the correct one if I sent it back - lucky there is a franking machine at work! ;)
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Re: Auto box changing up too soon

Post by pbar »

D366Y wrote: Wed May 11, 2022 3:29 pm they said they will post me the correct one if I sent it back

I assume they would refund the return postage costs Danny? Although some companies try to refuse, I think it's illegal not to. So would be interested to know their stance, as I don't like to use companies who do that.

If something is not your fault and they insist on a return then they should (and have to) refund the return costs.
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D366Y
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1980 3.0S, crash damage resto
1993 Fiesta 1.1

Currently full up and no more space but I still want a 2.8...
Location: Buckinghamshire

Re: Auto box changing up too soon

Post by D366Y »

pbar wrote: Wed May 11, 2022 4:01 pm
D366Y wrote: Wed May 11, 2022 3:29 pm they said they will post me the correct one if I sent it back

I assume they would refund the return postage costs Danny? Although some companies try to refuse, I think it's illegal not to. So would be interested to know their stance, as I don't like to use companies who do that.

If something is not your fault and they insist on a return then they should (and have to) refund the return costs.
Good question - I didn't think to ask at the time and I've never heard of it (possibly) being illegal!
I'll have to look into that separately out of interest, but since work are paying the franking I feel less concerned on this occasion :lol:
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Re: Auto box changing up too soon

Post by pbar »

D366Y wrote: Wed May 11, 2022 4:32 pm Good question - I didn't think to ask at the time and I've never heard of it (possibly) being illegal!

I think it's a ruling by the distance selling regulations, or similar. Some still try to wiggle out of it.
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