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Problems, Servicing & Repairs Information and topics about technical problems, servicing and repairs to the Rallye

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Old 03-12-2018, 07:17 PM   #1
DanCainey
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Kangarooing

Hey all,

I've had a search on here for possible solutions - seems like people have tried many options but it isn't clear what has worked.

My S1 rallye has started developing the following issues:

- intermittent stalling at junctions (or whenever clutch is in and revs drop to idle)
- intermittent kangarooing
- intermittent complete loss of power/throttle response (normally lasts for a few seconds then returns to normal)

Seems to happen at all revs, all gears, all conditions. Does appear to be worse when the engine is already hot.

It has been getting increasingly worse and more regular, to the point where I now can't really drive it. I have replaced the TPS and reset the ECU. I've also cleaned the ICV (I don't see how this would be the cause anyway - surely a faulty ICV wouldnt affect engine while at speed?).

My next step was going to be to replace the fuel pump and filter. But I wanted to check on here first in case I've missed anything?
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Old 04-12-2018, 07:38 PM   #2
MHR1294
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edit: we'll do this one thing at a time - Just incase something works and people will know in future!

If it's still the original 1.3, check the rubber hose that goes from the manifold to the remote map sensor.

In fact, probably just as well replacing that hose. Tiny splits can give vacuum leaks to the sensor with engine rocking.
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Old 05-12-2018, 01:13 PM   #3
DanCainey
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Hey thanks for your help with this.

Right I've checked the hose and its looking good.

Presumably the next step is to test/replace the MAP sensor?
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Old 05-12-2018, 07:55 PM   #4
MHR1294
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Just unplug it and see how it runs.

They're not complicated engines. No EML lit at all?

You can earth the 2 pin plug (terminal 2 iirc) to earth, then turn on the ignition and it'll flash off the codes.

Last edited by MHR1294; 05-12-2018 at 07:59 PM.
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Old 06-12-2018, 09:48 AM   #5
DanCainey
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Okay cool. Well last night I replaced the fuel filter to see if that had any effect. Drove it home and experienced no problems. It was only a short journey so I'll continue to monitor it, but at the moment its looking like that could have been the problem.
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