Sudden loss of acceleration

[BackSheep]

The other day I was casually driving along (doing around 40mph) along a simple straight, and all of a sudden my car started to slow. The accelerator was doing absolutely nothing, all power was just gone (electrical power was all still there).

Slowly rolled to a halt, and I believe (my memory is awful) the engine was still running. The battery and oil lights both lit up on the dash.

I shut off all power, left it for 5 minutes and started her up again, and everything seemed to be running fine again.

Any idea what the main possible cause(s) could be for this?

Going to give the car a service shortly as I don't even know when it last had one.

On a side note, which may be related (?), the revs sometimes bounce (sometimes by a couple of thousand, sometimes considerably more - bouncing from 5,000 - 15,000 revs).
On this particular day, driving the car before the problem occurred, it just drove like crap, something didn't feel right - there wasn't as much power as there should have been in the first place etc.

[stevo67]

Get your alternator tested mate.

[hellonpluto]

I had this on my old VTR its your coil pack. Whilst you're at it change the HT leads as well. Piss easy to replace as well.

[BackSheep]

Thanks for your replies guys.

Tested the alternator yesterday - all looks good.

I have the long 4 point coil pack so don't think I have HT leads?? Excuse me if I'm being dumb here though lol.
Will change the coil pack though and see how that goes - going to give it new sparks too, new oil filter and new fuel filter.

[hellonpluto]

yours is the mark 2 then. the coil pack on yours includes the ht lead poles or whatever iirc.

When I picked up my coil pack for the mk1 they gave me a mk2 one by mistake and I thought that looks a bit big.

[stevo67]

Was the alternator tested with the engine running?

[BackSheep]

Originally Posted by hellonpluto

yours is the mark 2 then. the coil pack on yours includes the ht lead poles or whatever iirc.

When I picked up my coil pack for the mk1 they gave me a mk2 one by mistake and I thought that looks a bit big.

If only I heard that everywhere I went ... Haha, thanks man. Have ordered new coil pack so will change that when I give her a service.

Originally Posted by stevo67

Was the alternator tested with the engine running?

It was yeah mate - got my dad to give me a hand as he suggested it could be that too.

[BackSheep]

Haven't had the problem occur again for a while, but gave the Saxo a few new parts anyway:

• Oil filter
• Fuel filter
• Engine flush/new oil
• Gearbox oil
• Spark plugs
• Coil pack

There seems to be a bit of lag in the revs when I change gear, no matter what gear or whether the engine is warm or cold. This has been an issue before the above changes.
Revs also sometimes bounce when idling.

Going to clean the ICV or change it all together and see if that fixes either problem.

[Ben_SaxoForte]

This used to happen on my vtr when running long trips, don't really know what solved it in the end but I did replace the fuel pump and the coil pack so I assume it was one of those unless it just disappeared on its own..

[BackSheep]

Originally Posted by Ben_SaxoForte

This used to happen on my vtr when running long trips, don't really know what solved it in the end but I did replace the fuel pump and the coil pack so I assume it was one of those unless it just disappeared on its own..

Haven't taken a look at the fuel pump - maybe I'll change it just for good measure, cheers.

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Car cut out again yesterday, turned the key straight away and the engine started back up instantly.

Anyone reckon it could be anything to do with the key/immobiliser?