- 1.9 tdi starting problem. Could this problem be glow plugs?
Hmm.. when glow plugs fail they should stay failed – not intermittent.
There’s a circuit that controls the glow plugs including a timer and a relay. The relay could be faulty. However even without glow plugs, when it coughs into life it should continue to run – especially at this time of year. The fact it died at the first roundabout is more concerninig – how far away was that? To answer your question, the glow plugs are only needed at start up, to provide enough extra heat for the combustion to start.
Where are you? If you have an engine managmenet light on I can read it for you if you’re near South Wales. Oh.. wait.. the 90 in brackets means it was made in 1990?Posted 4 years ago
Yeah,when glow plugs had burnt out on other cars they smoked on start-up and were a bit hesitant. This car still starts really quick with no delay. Well, most of the time :O)
It died about 400 yards from the house,Molgrips. Bit of an awkward place and luckily it wasn’t too busy but it could have been a right mare. I was riding out near Kinlochewe around 8 months ago and the car was parked facing up a hill for at least 8 hours. I finished the ride and it wouldn’t start so I rolled it around off the bank to get it pointing downhill and it started after a few attempts. At the time I thought the float or part of the fuel pump wasn’t working quite as it should but it hasn’t caused any probs since. It’s a risk, I could drive it and it might not stop for many miles but when it dies when it chooses, it could get a bit scary and dangerous.Posted 4 years ago
What year is the car? Mid 90s I’m guessing.
I’d have a punt on the glow plug relay, will cost a fiver or so. It sounds electrical to be honest. If the fuel pump wasn’t working at full pressure you’d get loss of power all the time when driving I’d imagine. If it were an air problem you’d get low power and smoke.
Any correlation between dampness/rain and starting problems?Posted 4 years ago
Hi all, Just hoping someone can put my mind at ease before splashing out on something that I’m sure is the main fault with my car.
I have a Seat Ibiza 1.9tdi (90) that wouldn’t start the other morning. It finally decided to fire up after a dozen attempts but soon died at the first roundabout I came to. After that it wouldn’t start again.. draining the battery in the process.
Once it was towed back to the house it started later on.. and has started over the past week each attempt without fail (at least 2 dozen attempts) but on last nights attempt I managed to start it about 8 times then it decided to start playing up again. What I have noticed is that the glow plug light in the dash won’t slow at all leading up to the non starting moment. If I turn the key back and forth until the glow plug light shows, then it starts perfectly.
At this point I would consider buying a set of glow plugs (the old ones have now done 243k!)but would this be a wise move considering it died approaching a roundabout? Can glow plugs still be the cause of a car stopping once it’s actually running? Or could it be an electrical fault?
I have ordered a fuel filter (fitting it today as it’s long overdue) but I’m thinking it’s more likely to be the glow plugs. I would go as far as the filter and glow plugs but I don’t want to go throwing money at it. Before it gets scrapped I’m thinking that it might be worth the cost of these items before calling it a day. The local dealer is £65+vat an hour and it could easily run up to 3-400 quid and find nothing. Do any of you guys know if it’s possible for a car to spit the dummy mid-drive due to faulty glow plugs or do they only get used (and needed) for the initial start up?
MartinPosted 4 years ago
re: pointing up hill and not starting. You probably didn’t have much fuel in the tank and so the engine pump couldn’t suck the fuel up through the sender. You may have gummed up fuel sender in the tank which is fairly easy to clean or replace if your competent with this sort of thing. This engine has a fuel pump by the engine and a tube into the tank in effect, there is no pump in the tank which rarely results in fuel pressure problems.
It could also be fuel filter is gummed/blocked up. For £20 you can replace all the filters on the car. for £50 you could do plugs also.Posted 4 years ago
It’s 99 v reg.I was thinking electrical too but I’m one of those guessers (and don’t want to be splashing out on it like I have done many years ago trying to get to the bottom of things)
It seems similar to my old peugeot when the fuel pump was on the way out. It would cut out when accelerating and you would have to wait for a short time before starting it again. It finally died about 2 mins from the garage on the way to get the pump replaced! (160mile+ drive)
I’m thinking that I might have a look around the connections and maybe give them a wee check/spray to see if anything looks a bit suss.
The only parts under the bonnet that aren’t original are the battery,air filter,fuel filter,radiator and a maf? sensor so the glow plugs are doing pretty well if they are still working as they should. Battery is fine,connections are fine (had a dodgy one recently so they are all secure and the earth has a new connection to the body too)Posted 4 years ago
At the time over west when it was parked for a long period there wasn’t much fuel at the time but the problems starting the other day were after putting 20 quid of fuel in it. The needle is pretty high. I don’t think the approach to the roundabout was the problem. I didn’t make it into it so I managed to roll back to safety.
Yes, the local garage says to do the fuel filter first as it’s not been done in ages (plus running veg oil approx 8 months ago!)
The use of veg oil and lack of fuel filter change sounds like the answer to it all but it brings me back to the glow plug light not illuminating and not starting.. followed by it starting perfectly as soon as you get the glow plug light showing.Posted 4 years ago
I would imagine the car would still start in this weather with dodgy glow plugs unless its significantly colder in Scotland than S. England 🙂
edit: SVO or WVO will loosen deposits in your fuel tank and fuel lines and this will gum up your fuel filter. They are very cheap, if it’s not the problem then you have only wasted less than a 10er.Posted 4 years ago
The guy in the garage had worried in the past that if ever I drop it off for work to be done and it sits there for a week waiting for a part.. that it’ll be a nightmare starting it. He has mentioned on a few occasions that it starts so well for its age after sitting there doing nowt!
<now off to collect the fuel filter.Posted 4 years agobigsurferMember
I would look at ECU or fuel issue. I have a Passat with the same engine and they are remarkably good at starting without glow plugs down to about freezing. Their is no way that dodgy glow plugs will stop an engine once it has started and driven.
It could also be an air leak into the fuel system.
Unless it is occurring regularly it is going to be very hard to correct as you will never know if you have sorted it or it just hasn’t occurred for a while, I would probably just get breakdown cover and wait for it to get worse or possible never occur again.
Obviously changing a really old fuel filter is always a good idea especially if you have been running any non standard fuels.Posted 4 years agowindydave13Subscriber
As crazy as it sounds check all the air intake pipes.
My HDI was a bugger to start and i thought it was injectors/glow plugs etc.
In the end, i discovered there was a join in the intake between the MAF and the turbo. It had come apart slightly so was sucking air after the MAF.
This caused the ecu to get really confused and poor starting in cold weather. Since then it’s been peachy
Also other forums suggest glow plugs don;t kick in until its -10^CPosted 4 years agopacerc200Member
On that eng you won’t need glow plugs to start it at this time of year, may crank a little longer than normal but it will go. Get the memory checked with a diag machine, probably won’t have stored any codes, if you do the diag check when it’s in the non start condition you will prob not be able to communicate with the eng ecu due to no voltage supply to the ecu. Look at your fuse/relay plate there will be a relay with 109 printed on it(its the voltage supply relay for the eng ecu) the soldered joints inside this fail. 2 options here replace relay or resolder, wouldn’t recommend the 3rd option of bridging the larger 2 terminals unless you know what you are doing.Posted 4 years agobenjiSubscriber
Spill of test on injectors, seen something similar on an X5, one of the injectors was stuck wide open on the spill, and was not allowing the fuel system to pressurize. The other thing it could be is fuel pressure, maybe pump on the way out.
Without futher investigation anything is just a best guess.Posted 4 years agosingletrackmindMember
Veg oil expert here.Posted 4 years ago
Running an older TDi on veg will pick up all the crap in the tank and send it to the filter .
Car will still run , just very badly . Most cars only need 1 filter change after 100 miles or so, some need 2. Depends on the milage of the car before you have wanged in a load of veg oil.
I would check the fuel cut solenoid as well .
On a 99 V reg this is pre PD so wont be the injectors ( hopefully )
Could be the ECU , could be the pump . Either way do not spend more than maybe £150 on getting it fixed, as you are well into write off and replace territory.
Benji this is not a CR engine with fancy tech. The injectors may not even be electronic, not sure though.
The car’s not running poorly, or struggling – it’s running fine then not at all. I’m telling you it’s a relay or the fuel solenoid or something like that.
Running an older TDi on veg will pick up all the crap in the tank and send it to the filter .
Car will still run , just very badly
Which isn’t what the OP has described..Posted 4 years ago
Thanks for all the replies,folks. There’s a few things written above that I can have a look at tomorrow while I’m fitting the fuel filter.
I asked the guy in the dealership about the possibility of the glow plugs being the problem,and also mentioned that it could still cut out during a drive. He seemed sure that it could still be causing a problem.
I’m not sure myself on that one but what I think I’ll do is remove the plugs anyway to see how they’ve been doing for this length of time. I’ll also check for corrosion of wiring in as many places as possible.
The thin flat plates in the connections of the abs pump had corroded to dust (oops, another part that failed under the bonnet!) many years ago but that had been replaced, so to guess that all wiring and pins etc are as new throughout the engine bay would be silly. I’ll see what’s lurking tomorrow.
Edit: when it starts, it runs like it did when I bought the car,220k ago. It’s never been sluggish or spluttered. It even pulls up the hill out of town in 5th gear similar to what it was like when I got it. I’m still thinking electrical glitchiness and I have no idea where to start looking!
Thanks again,guys.Posted 4 years agoparkesieMember
If the engines conking out and not restarting i very much doubt its anything to do with the glow plugs. Needs plugging into vag com id be expecting to see a temp sensor prob or more likely a crank position sensor fault. Fuel filter etc is worth doing as people have said its cheap and easy.
Worst case its a ecu problem i know they like to die on petrol golfs of that age and its pretty much ready for the scrap heap if it does.Posted 4 years ago
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