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View Full Version : Changed timing belt now have P1137 code



trbo4
03-28-2008, 05:45 AM
We changed the timing belt on my 2000 Audi A4 1.8T and I drove about 100 miles and got a CEL. I had it scanned and it pulled:
17545- P1137
Long Term Fuel Trim Add.Fuel,Bank1 System too Rich

Everything I read says its the MAF or torn vac line from the intake manifold to the DV. (which I cannot even see a line going from it to the IM) Not sure how that could happen since we didn't even touch the MAF during the install. Any other possibilities or suggestions? I was tried to clean the MAF, do the TBA with the VAG COM and clear the code and it came back in about 20 miles.

Here is what we replaced:
Timing Belt, Spark Plugs, Coolant Temp Sensor, Waterpump, Thermostat.
Any ideas or suggestions? Does anyone have a vacuum diagram for an ATW engine?

Poopie
03-28-2008, 08:55 AM
the dv vac line should run in front of the timing belt cover and to the nipple on the front of the manifold near the coolant line off hard pipe that goes to the coolant feed on the turbo. Basically it runs along side the coolant feed line.

trbo4
03-28-2008, 09:01 AM
Thank you I will look at it tonight. Anybody else feel free to chime in, so I can look at everything while I'm in there.

Poopie
03-28-2008, 12:43 PM
what does your coolant temp sensor read on your cluster?

trbo4
03-28-2008, 12:49 PM
It used to read absolutely nothing, but now when the car warms up I have never seen it move past halfway. Why would you think that is the issue? Just curious.

Poopie
03-28-2008, 01:04 PM
no thats where it should be. A low coolant reading sometimes makes your car run rich.

trbo4
03-28-2008, 01:22 PM
Ah ok. We flushed the whole system and filled with G12 and the new sensor so hopefully that part is all good.

quattro16
03-28-2008, 03:45 PM
clear it and drive it to see if it comes back.

trbo4
03-28-2008, 03:47 PM
Already tried that. I mentioned in the first post "Tried to clean the MAF, do the TBA with the VAG COM and clear the code and it came back in about 20 miles. "

Ok, I found the hose that goes from the IM to the DV. It looks fine but it would be very hard to see any kinds of cracks or fraying because my god that is a long hose. I am just going to replace it to be safe. I assume you can get to the other end from underneath?

trbo4
04-04-2008, 11:38 AM
Anybody else want to chime in? I have been searching on here and vortex for days and cannot really determine whats the issue. Here are the three main culprets I think:

Bad 02
Bad Maf
Vacuum Leak

Can anybody that has had this code please tell me which one fixed their situation or something else I am missing?

AudiRacerS4
04-04-2008, 02:42 PM
Anybody else want to chime in? I have been searching on here and vortex for days and cannot really determine whats the issue. Here are the three main culprets I think:

Bad 02
Bad Maf
Vacuum Leak

Can anybody that has had this code please tell me which one fixed their situation or something else I am missing?

vacuum leak will cause you to run lean. a boost leak will cause you to run rich. i'd check hoses around the turbo area as well

t1demont1
04-04-2008, 02:50 PM
from my experience, a bad maf doesnt make you run rich. also you are 2000 and have a map sensor as well for the computer to read how much air is taken in.

Do a boost leak test, that will expose any vacum or boost leaks. http://audizine.com/forum/showthread.php?t=104080 is how to make one.

Wholsea
06-10-2008, 08:26 PM
Bad MAF would make you run rich if it threw your car into limp mode...

Don't think you'll get that code though. Do you have any surging or other power related issues? Do you have a boost gauge? What kind of boost are you getting under WOT?

trbo4
06-11-2008, 07:00 AM
I forgot to post here, but the solution was replacing the vacum line from the FPR to the manifold. I found it by accident while listening for any leaks. I just moved it around and found it was split. I replaced it and cel hasn't been on for over a month.

Wholsea
06-11-2008, 06:52 PM
is that the little like 3" hose on the back of the intake manifold?

That little guy has burned me more than once...

trbo4
06-12-2008, 04:46 AM
Yep.[headbang]