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View Full Version : Important! : HELP! VTS cuts out intermittently, then won't start.


gillyskillz
13th January 2011, 00:03
Right, heres my story.
Been driving my saxo vts again since getting it back on the road and it's been fine for about six months now. The other day I had driven the car for approx 30mins before stopping for 5-10mins, then drove the car for another 30mins or so, then stopped for another 5mins, then drove for another 20mins or so before stopping for about 20mins. When I attempted to start the car at this point, it refused to start. The engine seemed to be turning over, but would not start. I left it for about 10 mins then tried again and it started. Although I'm no expert, it felt as though fuel was being restricted to the engine, and when pumping the throttle trying to start, it cleared a blockage and fuel found it's way to the engine. Anyway, after the car started, I drove for about 10 minutes before the engine cut out while travelling at about 30mph. First the engine management light came on for a few seconds, then went off, then a few more seconds later the engine cut out completely and all the dashboard lights appeared like they would when you stall. Again, the engine refused to start, turning over but not fully starting, even though on the odd start attempt, the engine would start up but then immediately stall. I was even more concerned about the fact I had broken down on a busy road! I left the car and didn't touch it for about 15mins, then tried again and it started! I quickly drove off the busy road into a layby, and left it there for about 2 hours or so. I checked all the basics, oil, coolant, loose connections, air filter etc. but nothing seemed out of the ordinary. Finally plucked up the courage to attempt the 30minute drive home, to which it completed without a hitch! Couldn't believe it!
Since then I have driven the car twice, and on both occassions it has acted like described above, start fine, drive fine for a period of anything between 10-40 mins, then cut out and refuse to start fully unless left for a period of anything between 10mins to several hours, then when it eventuallys starts, runs fine again for a short period, and the cycle starts all over again. There seems to be no pattern as such, and will cut out whether stationary or in motion.
I should mention that the car has a slight oil leak from the head gasket, this has been the case for a while, but gives me no bother regarding the performance of the car, providing I regularly monitor oil and coolant levels, the engine does not overheat.
I've since replaced the fuel filter for a new one, to no avail, and was about to start looking for a cheap fuel pump, except for the fact that I can hear the pump priming everytime I turn the ignition, whether it starts or not. Would I still hear the pump prime if it was faulty? I've read a few similar issues on here where the fuel pump was the eventual culprit, even though the pump was not initially suspect. At one stage when I was broken down, I called out recovery because I didn't have time to wait for the car to decide to start, and the mechanic said he thought it sounded like a coil pack? I wasn't convinced as I assumed the car wouldn't start at all if the coil pack was faulty, although he was certainly better equiped to judge than me.
I apologise for the essay, but I wanted to provide as much information as possible. So basically, any help or advice on what to try next would be hugely appreciated. Thanks in advance.

luthor1
13th January 2011, 00:23
Having not seen or inspected the car it's nearly impossible to diagnose over a forum.

Having said that, my bet is the coilpack. No promises though! See if a local member has one you could swap with as a test

Andy

D6RNL
13th January 2011, 00:25
hi mate i had the same problem and i changed the fuel pump and i havent had a problem since

gillyskillz
13th January 2011, 08:09
Thanks for the quick replies guys. I've ordered a used working fuel pump from ebay to try out, won't be here for another week or so tho, so will let you know how that goes. Coilpacks seem to be more expensive, even used, so hoping I won't have to go down that route, but if so, will try your advice luthor1 and borrow a working one first! Will I need a specific coilpack for the vts, or would one from a vtr be just as good?
Any other help/advice is more than welcome. Nice one.

scrapyardcity
13th January 2011, 15:19
mate had this problem on his xsara vtr,brought new coil pack,pedal sensor and fuel pump,but still runs like shit cuttin out everynow and then,he just takes a fuse out leaves it 5 mins and it starts fine again???

gillyskillz
1st February 2011, 08:32
Right, quick update for anyone who still cares. Changed the fuel pump, car ran smoother than ever for about 20-25 mins, then same old story cuts out and struggles to start. There's no loss in performance whatsoever until it cuts out, and it feels just as though I've killed the engine with the key. Only when it's left for a period untouched will it start again. Please any ideas would be greatly appreciated as tax is up now and can't afford to put into a garage just for them to have the same 'trial & errror' problem. :wall:

rozaladdd
1st February 2011, 08:39
there is a lot to read in first post lol, have you hit the start motor ? give it a good bash also take the coilpack off get a spark plug out put it back into the coil pack put this on you engine then turn engine over and get someone else to look for a spark then you can rule this out but can be a number of things mate but you need to do one by one also check the cranck shaft sensor

gillyskillz
1st February 2011, 08:53
Thanks. Where is the crank shaft sensor located? also, what exactly is the 'carb'? as I've seen it mentioned as a possible fix, but tbh no idea what this is, or even if my VTS has one? Seeing as tho the problem is intermittent, would I still get a spark from the coil pack when the car iiss running fine? If there's any other sensors thats worth checking, could someone please point me in their direction, thanks.

gillyskillz
1st February 2011, 08:56
also, confident it's not the starter motor, as car will start up fine first time, then only struggle to start after it cuts out while driving. If problem was staarter motor, car wouldn't be cutting out while driving, regardless of speed.

rozaladdd
1st February 2011, 09:00
also, confident it's not the starter motor, as car will start up fine first time, then only struggle to start after it cuts out while driving. If problem was staarter motor, car wouldn't be cutting out while driving, regardless of speed.

yup true then so you know it not that or fuel pump then, check the sparks then off coil pack but it could be that many things its hard to say got to be some sensor though, you may spend loads of wasted hours trying to search and no one can give you a definate answer and waste a lot of money so best to just take it garage and get the fault code thats you best bet may cost a little but least you wont be wasting money on fiel pumps ect and wasting time aswell