GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Ben Lessani on 04 August 2010, 22:49
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This one has thrown me a little, I was driving around the other day, just about pulled up to the house and the engine stalled. It just about started again with enough power to drive the last 10 metres to get on the drive. The engine wasn't that warm, I'd barely done 8 miles.
I left it for a few hours, went to check it (to make sure it would start the next day for work) and it started fine.
Then, on my way home from the office, I got about 0.5 miles before it stalled at the lights. I started it back up with a little bit of fight and got about another 20 metres before it started struggling, to keep it ticking over at the next set of lights I had to hold the throttle at about 2krpm and it was coughing and popping.
I pulled off the lights and then the only thing just about keeping it going was it being in gear, so it would self-bump back into action. I got just far enough to pull over safely.
I had a poke around the engine bay and everything looked in order (no obvious vac leaks), I swapped the fuel relay for another - but it was still the same, there is a full tank of fuel, grounds to the head/gearbox/chassis are clean and tight, battery is full of juice, CO is spot on.
Its thrown me as its never had any engine trouble, so this is totally out the blue. It doesn't seem to be heat related, or in fact, anything related. Given its random-ness, I'm ruling out it jumping a tooth, I originally thought it was a loose ground shorting out.
If I try starting it, I have to hold the throttle wide-open and even then the revs are bouncing all over and it backfires until it stalls.
I'm going to check the aux. air valve at the weekend as it seems very air leaky!
Any thoughts ... ?
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fueling? maybe blocked filter?
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As above, fueling maybe
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As above, fueling maybe
definitely....replace filter, if problem persists check fuel pump
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mine did this, im using original 8v fuel pumps.
a couple of times it refused to start. left it for an hour or so. started fine.
then it started to run like a bag of crap on the way home one day, had to rev the ass out of it for it to move. turned out the lift pump wasnt working. new pump for £25 from GSF and its been good as gold ever since.
does the in tank pump fail to prime when you turn the ignition to pos 2? when it runs badly, can you hear the under-floor pump making a racket? if so i'd say in tank fuel pump :smiley:
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... turned out the lift pump wasnt working. new pump for £25 from GSF and its been good as gold ever since ...
Hmmmmmm, I had a little problem a while back where the in-tank pump "fell off" the pick-up hose (where the rubber sleeve is). I'll double check it to see if it has done the same thing again. Failing that, I'll replace the fuel filter.
Thanks troops!
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Your got spark to all leads though yeah?
If its not electric? I think like the others, gotta be fuel starvation you can always pull the fuel pipe and see if there is decent flow, but becareful its fuel after all, but you have experience so just fix it fella! :wink:
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I pulled the lift pump, it seems to be connected up ok (not fallen loose). Power is getting to both pumps, they are both whirring away.
Noise isn't exactly indicative of flow, so I bought a new fuel filter (which I will fit after work) and I'll test flow from each pump whilst I'm at it. I'll check spark too.
Stupid car.
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Problem with pumps is they might be sticking intermitenly, and only when they start to warm up for awhile they start to fail?
I would run tests on the pumps for awhile before discounting its them?
Fuel filter yeah defo do that regardless you will be surprised the amount of sh!t that comes from petrol stations into your tank. I've split one open when I bought my Rallye, it had sand in it LOL!
Remeber to check the pipes afterwards when running as leaks could occur when you disturb the old pipes in some cases I've just changed the fuel pipe whilst under there even if they haven't split.
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you might have some damp in your distributor cap, had this on an old clio, only when the car was starting to get warm would it start to play up and a right pig to start again!!
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Coil could be breaking down as well.
Nick
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Lol, could be anything! Easy start will confirm spark/fuel.
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Coil could be breaking down as well.
Actually, I think you are right. After trying it the other morning, the fuel pump wasn't priming on either the known good relay, or my older relay. But if I bridged the pins - the pumps were fine.
The fuel pump relay on a K-Jet depends on getting a continuous pulsed input from the coil. Off to check the spark this morning!
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There was no spark, I swapped the coil out for a new one, but there is still no spark (even when using the king lead).
There is a thick green and thin black/red wire connected to the gnd on the coil (a continuity tester shows these to earth)
There is then a thick and thin black wire connected to the +ve on the coil (a voltmeter shows 12v to gnd)
But if I pop a voltmeter over the two points on the coil, there is no voltage?
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This all leads me to think the hall sender has packed in ... loathedly, I'm going to have to pull the dizzy!
Stupid GSF and ECP don't look like they sell the dizzy for an EV! Anyone got the part no. for a 1986 1.8 8v K-Jet Distributor?
Edit. No matter, found one on eBay ... will buy on Monday unless someone thinks it might be something else (or has a test for a hall sender!)
026905206A
http://cgi.ebay.co.uk/vw-reconditioned-Distributor-MK1-AND-MK2-GOLF-GTI-/170521048068?cmd=ViewItem&pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27b3d8b404
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Mine had these exact symptoms and it turned out to be dizzy cap and rotor.
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Mine had these exact symptoms and it turned out to be dizzy cap and rotor.
I'm testing from the king lead for a spark - surely it couldn't be the dizzy cap or rotor ...
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I popped a multimeter probe in the middle pin (with the wiring still connected) on the hall sender - the other end on ground, put the IGN on, put the car in 5th and gently rocked the car back and forth, there was no fluctuation in voltage/resistance.
I'd say the hall sender is shot, new dizzy time.
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Haaa see Spark or Fuel?
Glad you found the issues same as mine Hall sender when you understand the pulse signal and timing it makes sense at that point non?
:wink:
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Bought new dizzy, I'll report back in a couple of days complaining about my timing being out :D
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I love how cars do things like this well randomly, my inclination was a spark issue, was just guna suggest an old lead arking out but hope its the hall sender now you bought one .. Good luck Ben!
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I used contact cleaner on on the electrical connectors in the bay, and then was stumpted when the old girl would not fire up. checked everthing, turned out to be the connectore on the bottom of the dizzy with 3 connectors (hall sender), just cleaned it up again and pluged it back in and she fired on the key, was intresting , pluged it back in with the ignition to the "on" position and when I plugged it in heard the fuel pump prime up.
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To finish this off ... I fitted the dizzy yesterday, charged the battery overnight - went to start it this morning and she fired straight up - lets hope its fixed!
The write-up as usual is on my dub thread http://www.golfgtiforum.co.uk/index.php?topic=49436.msg1512898#msg1512898 :D