Limp mode when I put foot down?

OhSoFresh

OhSoFresh

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Cars going into limp mode every now and again, I think its mainly when i give it some... it goes if I turn engine off and back on again, scanned it at my garage other day and showed Glow Plug in Cylinder 2 and 4 fault. There has never been no glow plug light come up on my dash or any other light for that matter aha, any ideas guys? I'll change all 4 plugs this weekend see if that solves it I'm pretty sure it won't but hey. I just really hope it isn't the turbo veins sticking :\

Audi A3 TDI PD140 2004
Not remapped yet waiting for this limp mode to go before I map to 185 :\
100k on clock

Thanks guys!
 
Could also be a boost leak. And given the fact you have 100k on the clock, do you really want to map it to 185 and start breaking things?
 
@tdi-man is right, follow that advice.

Just be careful who you take your car to for the remap. The PD140 turbos are made from cheese and even reputable tuners manage to blow them...

Never used his service personally but @Rick @ Unicorn Motor Dev. has a great reputation on here and I must say every time I've contacted him to enquire about my car he's been extremely helpful.
 
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Thanks for the info I will buy some of that stuff to put In tank and see if helps :)

Also I am now worried about doing a remap? I was going to go with pendal performance as that's who we use at work but I won't if its gonna start breaking things

Also was thinking about decatting it and either blanking or cleaning egr
 
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OhSoFresh said:
Thanks for the info I will buy some of that stuff to put In tank and see if helps :)

Also I am now worried about doing a remap? I was going to go with pendal performance as that's who we use at work but I won't if its gonna start breaking things

Also was thinking about decatting it and either blanking or cleaning egr
Click to expand...

My car doesn't have a cat (has a DPF instead) so I don't know too much about the cat. You'd be mad not to blank and code out the EGR in my opinion...if the cat is similar to the DPF then removing that also helps.

For my car, @Rick @ Unicorn Motor Dev. offers a drive in/out service where he removes DPF, blanks EGR and writes you a custom map for very little money considering all the work he has to do. Maybe send him a PM and see what he says about your car?

I know for sure he'll be doing the work on my car when I'm ready.
 
The glowplugs are just for starting, nothing else, however they also are fed electrically with the same loom as injectors & there have been instances of looms going faulty, it may just be the glowplugs in those cylinders are dead, but this is a separate issue to your limp mode fault..

The mr muscle is temporary at best, I never advise this to anyone as it simply isn't prolonged, if its build up on the vnt, then best route is to remove the turbo, split it & clean the mechanisms properly, this is your only guarantee it will clean them properly & for longevity, something I've done to numerous bkd's for clients.
 
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From experience of removing & cleaning/refitting these, no, its only temporary, do it properly.

Whereabouts are you again?
 
There is a few thing your could try

If you can get some one with a miti vac to apply vacuum to the pipe to the turbo actuator and give it as much as possible on and off maybe 20 times this will loosen the carbon,

Also if you get it mapped you will change the peramiters of the boost so you car will max at about 2.1-2.3 bar and when it's mapped that will go to 2.5-2.6 and so it won't cut out because the tolerance is higher if you know what I mean,

People are quite right though the 2.0tdi has a chocolate turbo,


Everyone drives a diesel for fuel economy and never thinking of all that carbon collection,

I advise all our customers to use the Rev range more

I.e car warn down a slip road 3rd gear and floor it you need to build up speed anyway and watch all that carbon get fired out

Love a dirty diesel
 
best way is to remove and clean .

I was finding mine very laggy when cold so did the mr muscle thing and chucked 2 bottles of cleaner in and it feels like a new car .

should it do it again will remove and clean.
 
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