TDI Operating temperature

Seatman

Top Post Dawg
Joined
Apr 23, 2010
Location
Scotland
TDI
2014 Skoda rapid elegance 1.6 cr tdi
Yep, if you disconnect it and notice an increase the MAF is bad and if its worse or even about the same its most likely OK.

Now I know that isn't acurate, my neighbours maf failed on her tdi and unplugging it made no difference but after replacing it the car is transformed and I mean transformed.:)
 

jettawreck

Top Post Dawg
Joined
Aug 2, 2004
Location
Northern Minnesota-55744
TDI
2001 Jetta and 2003 Jetta
I'd avoid using the brake cleaner. Is the MAF on this engine the film or wire type? If film, I've heard that they really can't be cleaned with MAF cleaner because it will damage the film. Sounds like too much oil was sprayed on that K&N filter. That'll kill a MAF quick.
According to Oilhammer (search for his discription in the post) they are a film type.
 

jettawreck

Top Post Dawg
Joined
Aug 2, 2004
Location
Northern Minnesota-55744
TDI
2001 Jetta and 2003 Jetta
Now I know that isn't acurate, my neighbours maf failed on her tdi and unplugging it made no difference but after replacing it the car is transformed and I mean transformed.:)
Sorry, I guess that's what happens when general statements are made. I've had three MAFs fail and they all have acted a bit different, so yes, that statement (and probably many others) I made isn't accurate in all cases.
 

Seatman

Top Post Dawg
Joined
Apr 23, 2010
Location
Scotland
TDI
2014 Skoda rapid elegance 1.6 cr tdi
Sorry, I guess that's what happens when general statements are made. I've had three MAFs fail and they all have acted a bit different, so yes, that statement (and probably many others) I made isn't accurate in all cases.

Lol these cars are sent to baffle and confuse but we must continue this battle and win this war:D
 

wndboy

Well-known member
Joined
Jul 4, 2008
Location
Brownsville Texas
TDI
2002 Jetta 1.9 ALH
I replaced my orinal thermostat and have another question. Regarding replacing the radiator fluid? I bought some G12 from the dealership. Do I put the whole gallon in and fill the rest with distilled water? How important is the ration of G12 to water? Does anyone know the system capacity? Thanks
 

Ski in NC

Top Post Dawg
Joined
Jul 7, 2008
Location
Wilmington, NC USA
TDI
2001 Jetta ALH 5sp stock
I mix the g-12 with distilled water 50/50 and use that to refill. All it takes is an empty, clean jug to mix in. Once back on the road, you will need to top up a bit and just use the mix to do it. I changed my t-stat and I think I put in a gallon of mix.
 

wndboy

Well-known member
Joined
Jul 4, 2008
Location
Brownsville Texas
TDI
2002 Jetta 1.9 ALH
I mix the g-12 with distilled water 50/50 and use that to refill. All it takes is an empty, clean jug to mix in. Once back on the road, you will need to top up a bit and just use the mix to do it. I changed my t-stat and I think I put in a gallon of mix.
Thanks Ski. When I changed the T Stat back to the original, I bleed most of the Rad Fluid I think. I opened the bottom hose on the rad and placed a towel on the reservoir and blew into it. It definately got alot more fluid to come out. I did this until I could not get any more. I then took the upper hose on the right side of the motor off and pored the full bottle of G12 and then added distilled water... and refilled reservoir several times until it topped off. I then noticed the leak where I had replaced the original t stat. So I guess I have probably to much water and not enough G 12. I bought another bottle from dealer and am trying to figure out just how much to put in. any other suggestions would be apreciated
 

eeonmomberg

Well-known member
Joined
Dec 10, 2022
Location
Camano
TDI
2006 golf tdi
My tdi bew temp on my cluster says it's always at 190 but when I have my obd11 plugged in I hit 208 the other day, freaked me out so I drove a bit less aggressive, it's also 115 degrees out so I figured that had something to do with it but it normally says it's around 180, should I worry that my cluster isn't giving me the right readings and from what I'm reading here my temps where perfectly fine
 

Nuje

Top Post Dawg
Joined
Feb 11, 2005
Location
Island near Vancouver
TDI
2002 Golf 6MT; 2015 Sportwagen 6MT; 2016 A3 e-tron 6DSG
If you read around here (and probably this thread), you'll find that the cluster reads 190F (90°C) anywhere from around 75°C to 105°C. So, particularly given the ambient temps you're driving in, perfectly normal.
More details here (should you want it to read accurately):
 

eeonmomberg

Well-known member
Joined
Dec 10, 2022
Location
Camano
TDI
2006 golf tdi
If you read around here (and probably this thread), you'll find that the cluster reads 190F (90°C) anywhere from around 75°C to 105°C. So, particularly given the ambient temps you're driving in, perfectly normal.
More details here (should you want it to read accurately):
Ok cool ty, also at what temp will the engine be harmed just so I know? Head gasket is the first thing to go right?
 

x1800MODMY360x

Veteran Member
Joined
Jun 27, 2021
Location
AZ, USA
TDI
2013 Passat TDI SEL
Mine is 166F-230F that is the Range where it hits 190F or move off of 190F.

Like many says, it's an idiot gauge.
 
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