Duncan Mould
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| posted on 14/2/09 at 08:48 PM |
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tin top trouble VW Golf 1.4 16v
This is a very helpful community and normally when I post up a problem someone has an answer.
I know this is not locost related but it is stopping we working on my locost therefore it is a problem.
My 1999 VW Golf has problems starting occasionally, when the engine is cold (1st thing in the morning) it starts first turn of the key (thats German
quality for you) nip the shops or drive to work then leave it to stand and it does not want to start.
This does not happen all of the time though!
Checked all of the common sense stuff, even put it on a fault code reader and it registers no faults what so ever.
It has a strong spark during cranking and you can hear the fuel pump prime when you first turn the key.
Today I have spent 6 hours removing parts and cleaning them I even had the inlet manifold off and washed it out because there was an oil build up
inside, got my trusty Autodata book out and checked all of the components under the bonnet including the immobiliser circuit and resistances are fine.
Pulling my hair out now, Just got in, can anybody help.
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owelly
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| posted on 14/2/09 at 08:52 PM |
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Did you use VAGcom or a generic reader?
http://www.ppcmag.co.uk
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Duncan Mould
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| posted on 14/2/09 at 09:04 PM |
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Bosch KTS diagnostic tool, pretty good bit of kit.
Not let me down before
[Edited on 14/2/09 by Duncan Mould]
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owelly
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| posted on 14/2/09 at 09:17 PM |
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It has now!!!
Is it possible to use the reader as you're using the car and see if it throws anything up? A fuel pressure problem or a loss of trigger signal?
http://www.ppcmag.co.uk
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Duncan Mould
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| posted on 14/2/09 at 09:45 PM |
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tried that today.
performed a static test and dynamic test even made it do the fault and it still stated there was no fault.
once the car is running it as sweet as a nut never misses a beat.
Unfortunatley you can spend up to 5 mins cranking it off and on and thats doing the CAT no good.
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owelly
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| posted on 14/2/09 at 09:53 PM |
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Engine temp sensor?? How hot does the diag tool tell you the engine is? It could be trying to overfuel if it thinks it's cold. What's the
emissions like when it's running?
http://www.ppcmag.co.uk
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Mark Allanson
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| posted on 14/2/09 at 10:17 PM |
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We have the same car, mine is very reliable, but occasionally I get hot starting problems, not quite what you are getting but about every 18 months
the throttle body gets gummed up with carbon and throws up all kinds of problems. It never gives a fault code, but a good clean with carb cleaner
always cures it until the next build up.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Duncan Mould
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| posted on 14/2/09 at 10:32 PM |
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Had all the throttle body apart today, and it was pretty gummed up. Thought to myself aha I have found the fault NO i had not.
In answer to the previous question temp gauge is saying exactly the same as ECU thinks it is even checked it with a thermometer in the header tank.
KTS indicates that it is lean but then they are anyway because they are so efficient.
Going on from the lean issue, that is the reason I removed the inlet manifold. I suspected air getting past the manifold gasket but they are chunky
rubber gaskets on each port.
Fuel pressure and delivery rate is within autodata specifications.
Completely at a loss
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roadrunner
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| posted on 14/2/09 at 11:18 PM |
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I know this does'nt help but, i have a 2001 V5 , i have really missed used it, i have'nt serviced it in three years and it has'nt
missed a beat.
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Ninehigh
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| posted on 15/2/09 at 02:42 AM |
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Is this problem after a short journey? I heard something about Kas refusing to start after running for a short period of time to prevent the cat
filling with water...
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mookaloid
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| posted on 15/2/09 at 08:03 AM |
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Have you tried a new set of spark plugs?
"That thing you're thinking - it wont be that."
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Danozeman
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| posted on 15/2/09 at 09:49 AM |
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My mate is a VW mechanic and he reckons they give trouble with the engine temp sensor and throttle bodies. Id go for the temp sensor. Theres 2 one
for the gauge and one for th ecu. The ecu one is the one to change.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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omega 24 v6
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| posted on 15/2/09 at 11:51 AM |
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Not a VW fan or knowledgeable about them at all BUT on the vauxhalls there was an issue where the fuel pump relay would pack in and gave the exact
same symptoms as your having.
Basically it has a second set of contacts that get a singnal from the ecu that the engine is running/plugs are sparking. This keeps the fuel pump
running but in the ebvent of a crash/engine stopping the pump cuts out ( there were no inertia switches on them).
The pump would still prime but there would be no pressure after cranking due to the lack of signal,
If it looks wrong it probably is wrong.
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Duncan Mould
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| posted on 15/2/09 at 12:47 PM |
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tried new plugs but I think I will shove in a temp sensor thats a cheap fix, checked the fuel pump relay everthing looks fine when I opened it up.
Let you know how it goes.
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omega 24 v6
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| posted on 15/2/09 at 12:51 PM |
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To check the relay put a test bulb or meter between the feed to the pump and earth. Make sure your getting light and/or reading while cranking.
If it looks wrong it probably is wrong.
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britishtrident
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| posted on 15/2/09 at 06:38 PM |
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Short of having a live data fault code reader connected while it is actually playing up. it will be a question of elimination
Most of the possibles have already been mentioned --
It is not uknown for relay faults to show up after a short drive from a cold start. On Hondas and Honda-Rovers it is the soldered joints on the relay
circuit that fail --- a re-solder usually fixes it.
The temperature probe is also a possible.
Might be an idea find out if the injectors are being triggered --- I have a test tool called a "Noid light" for this but any 12v LED
will do one of those 12v alternator checkers aldi are selling would be just the job.
The other check is fuel of course pressure
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Duncan Mould
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| posted on 16/2/09 at 05:48 PM |
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ordered a new temp sensor today and will fit it tomorrow let you now how I go on.
Can I also say that I posted the exact same fault on a vw website (uk-mkivs.net) and not one reply, miserable gits. I think they are all 18inch wheels
and will a panel filter increase my BHP.
Thanks for everyones help it is very much appreciated.
"We not only fix cars we build them too"
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Duncan Mould
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| posted on 24/2/09 at 09:54 PM |
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The temp sensor sorted the problem.
Happy as a pig in muck !
Thanks for all your help
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