Volkswagen Polo III (1994 - 1999) - 1998 1.6 Engine cuts out and will not start

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Tue 18 Nov 2008 16:08
1998 1.6 Engine cuts out and will not start - sunbeamer
Wonder if anyone can shed some light on this intermittant fault. Polo will run beautifully for days on end then occasionally when warm and as you come to rest, engine cuts out.
It will turn over fine but will not fire up until left several minutes, then drives fine again. No warning light shows at all, did have new coil pack about a year ago when it rerfused to start from cold. A local garage read the fault codes and these showed problem on all 4 injectors, but as garage said it is unlikely they are all playing up, they also cleaned throttle body but could find no other faults. The garage did suggest it may be an ecu fault or wiring problem. I did speak to an ecu repair specialist who thought it was not likely to be ecu as they have no ability to self repair like the symptoms would suggest, but rather was a wiring or relay problem. I realise by the nature of this type of fault it is difficult to pin point but any suggestions?
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Tue 18 Nov 2008 16:25
1998 1.6 Engine cuts out and will not start - Screwloose

The clue could be the 4 injector codes - what were the exact numbers? This could be a relay or ign switch fault.

Do you know the engine code; rather a lot of different 1.6 units used.
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Tue 18 Nov 2008 16:51
1998 1.6 Engine cuts out and will not start - sunbeamer
The engine no. begins with AEE. I shall get a print out for the fault codes tomorrow.
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Tue 18 Nov 2008 17:04
1998 1.6 Engine cuts out and will not start - Screwloose

On an AEE; the fuel pump relay feeds the fuel pump, the heater for the oxygen sensor - and all four injectors.

That relay dropping out wouldn't be noticed by the ECU - but it would definitely notice that all four injector circuits had gone dead.
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Tue 18 Nov 2008 18:01
1998 1.6 Engine cuts out and will not start - sunbeamer
Most helpful again Screwloose, so the finger points to the fuel pump relay. I shall change this and see how it goes. I once had an Escort that refused to fire and that was a dry joint on the pcb under the pump relay.
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Tue 18 Nov 2008 19:45
1998 1.6 Engine cuts out and will not start - Screwloose

It's only a guess; but if you do want to try a relay, it's the one directly above fuse 22 - might have 167 printed on it.
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Tue 21 Sep 2010 10:03
1998 1.6 Engine cuts out and will not start - yogi3

Hi sunbeamer, I have the same problem with my 1998 polo... it is so frustrating!

Can you please tell me if you managed to solve this problem ? Was is the relay eventually ?

Thank you very much!

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Mon 4 Oct 2010 16:56
1998 1.6 Engine cuts out and will not start - tomyblu

This conversation still live? I'm also having this problem, was there a solution?? Thanks!

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Mon 25 Oct 2010 23:04
1998 1.6 Engine cuts out and will not start - GBR230

I have the same problem on a '95 Polo with an AEE Engine. I have just replaced the battery, ignition coil, distributor cap (Bosh) and rotor arm. As its an intermittent fault its such a pain. I had a fault on the fuse box once before which was fixed and the ignition switch failed and had new contacts fitted a few years ago. Did the fuel pump relay work?

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Thu 10 Mar 2011 08:58
1998 1.6 Engine cuts out and will not start - marco polo 2011

1998 1.0L engine AEX cutting out at idle when coming to stop...........had same problem i found solution replace the thick vacuum pipe from throttle housing to servo.

before replacing that pipe testing is easy to see if that is the problem:-disconnect the very thin vaccum pipe coming from air filter housing linked by nipple to the thick vacuum pipe from throttle to brake servo vacuum unit,then drive with that disconnected (thin vacuum pipe you will notice revs or the rpm will be contantly high while the vacuum pipe is disconnected) if the car engine does not cut out when driving then coming to stop engine idle,then its the pipe. i discovered that by accident after weeks of replacing this and that real pain.good luck

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Mon 4 Oct 2010 21:18
1998 1.6 Engine cuts out and will not start - Railroad.

These are well known for bad connections in the fuse box so it might be worth having a good look there.....

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