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Thread: 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles.

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  1. 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles. 
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    I am struggling trying to fix my motherís faithful 21 year old Polo which was purchased new and I have looked after for 21 years. The problem started several weeks ago with the engine missing a beat or two, then stalling when stationary, but more recently, it has stated cutting out even when driving. When this happens it subsequently starts first time and all is well. This may happen only once a day if at all. I have carried out the following as a service was due:
    Compression test. All cylinders 14.5 to 15 bar
    Replaced sparkplugs
    Replaced ignition coil
    Replaced rotor arm and distributor cap
    Replaced fuel filter
    Cleaned battery terminals and earth strap from battery to body and gearbox
    Throttle body cleaned with carb cleaner as is done every service
    Ignition leads were replaced 4 years and 20k miles ago.
    Checked timing marks on crank and camshaft because I replaced the belt recently
    I have checked the battery, alternator and earthing using a Ring battery tester and all was ok.
    I have looked for induction leaks but canít find any, and of course there is a lot of wiring that could be shorting.

    I am not getting any fault codes via VAGCOM, but one did appear after it had stopped on the motorway.
    00529 Engine speed signal missing 03-10 No signal intermittent
    00653 selector Lever Auto transmission plausibility. 27-10 Implausible signal intermittent

    I canít figure out if I am lacking fuel or sparks because the fault only occurs momentarily. My mind is switching to the MAP sensor, fuel pump or the Hall sender, but would like to get some views before I spend more time on replacing parts.
    Thanks in advance
    Audi A7 Dakota Grey, 3.0TDi 2wd, engine CLAB, Gearbox NKP, Comfort seats, parking system advance, advance key, MMI Nav plus, MMI touch, HUD, Mob phone prep high with on-line services, heated sports steering wheel, folding mirrors, garage opener, fine grain ash inlays. 110k miles
    Audi Q5, 3.0TDi Sline Plus engine CDUC, adaptive headlamps, high beam assist, black inlays, advance key, TPMS, parking sys advanced, 45k miles
     
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  2. Re: 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles. 
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    Last night I removed the MAP sensor and cleaned it with carb cleaner. It didn't seem dirty, so I dont think this will do anything positive. I also noticed that the wire loom feeding the MAP sensor is attached to a metal guide on the inlet manifold and was squashed at the point the crankcase hose inlet pipe of the air filter casing presses on it. I just thought that this may be where the there was some shorting occurring. I have tried to loosen the squashed wires and tried to spray some moisture repellent into the sleeve.
    I drove 16 miles today and the car drove well, but that's quite a small distance to mean anything.
    Audi A7 Dakota Grey, 3.0TDi 2wd, engine CLAB, Gearbox NKP, Comfort seats, parking system advance, advance key, MMI Nav plus, MMI touch, HUD, Mob phone prep high with on-line services, heated sports steering wheel, folding mirrors, garage opener, fine grain ash inlays. 110k miles
    Audi Q5, 3.0TDi Sline Plus engine CDUC, adaptive headlamps, high beam assist, black inlays, advance key, TPMS, parking sys advanced, 45k miles
     
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  3. Re: 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles. 
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    The AEE distributor was very prone to failure when these engines were more common, it was so bad that the local dealer (pre TPS days) would always keep two on the shelf as it fitted a wide variety of the hydraulic tappet EA111 engines. I checked with TPS and the part LOOKS to be still available as they are indicating three in stock, part number 030 905 237 GX which replaces the original 030 905 205 AB and the nice surprise is that they retail at £76.74 including VAT which is a bargain when you consider the hall sender inside costs £120 and it comes with a genuine Bosch cap and rotor plus a two year warranty. Also the notes on ETKA say it is no longer necessary to return the old one. You will have to put the ECU into basic settings mode and use a timing light to set the ignition timing, it is a fussy process where the engine rpm must lift on its own to about 1400 rpm in basic settings mode and then you can dial the dizzy in, that is if you can see the timing marks!
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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  4. Re: 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles. 
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    Thanks a million Crasher. Given the cap and rotor was £31 from TPS, this truly is a bargain. I might just buy one anyway. As far as fitting it, I sold my timing light a few years ago and wonder whether vagcom can be used. If not, it will probably have to take a trip to your place. The car will be going to my daughter at Nottingham uni. The distributor is original and 21 years old.
    Audi A7 Dakota Grey, 3.0TDi 2wd, engine CLAB, Gearbox NKP, Comfort seats, parking system advance, advance key, MMI Nav plus, MMI touch, HUD, Mob phone prep high with on-line services, heated sports steering wheel, folding mirrors, garage opener, fine grain ash inlays. 110k miles
    Audi Q5, 3.0TDi Sline Plus engine CDUC, adaptive headlamps, high beam assist, black inlays, advance key, TPMS, parking sys advanced, 45k miles
     
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  5. Re: 1998 Polo 6N1 1.6 AEE engine auto sometimes cuts out/stalls, then restarts 80,000 miles. 
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    We have a lot of customers from our two unies and we are used to helping them through. Twenty five years after graduating a couple are still customers, one bringing his car half way across England twice a year for work.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:
     
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