Wont rev past 3k

cman3000 · 05-10-2008

Hey, so i just got matts 91 awd tsi, 5 speed, and got the tranny fixed on it. tried driving the car home, but it would get to 2k, start sputtering, and wouldnt get past 3. I could even downshift and the car would go to 4k, but there would be no throttle response at all. Occasionally i will start the car up and it will rev all the way(still sputtering a little), but it doesnt last long. Thought it was the TPS, but i took that off today and it tested fine. Could it possibly be the fuel pump? Im not hearing it whine when i turn the key. Mabey something was not hooked back up when the tranny was fixed? Any opinions would help greatly.

blageo23 · 05-10-2008

Boost leak. End of story

cman3000 · 05-10-2008

Can i test for it? Oh and the car is running really rich.

**Halon** · 05-10-2008

First question I have is if you are getting any kind of check engine light?

I think if I were you, right now I'd just go over the car completely after hearing about this, and the issues you stated in the other thread. I wouldn't trust that anything is right on that car.

I'd start with the timing belt, make sure all the marks line up. Then I'd check ignition timing. Then a boost leak test. Then put in new plugs, wires, air filter, and change the oil. Then just go over the entire engine bay and just try to see if anything doesn't look right.

cman3000 · 05-10-2008

Yes check engine light is on and i checked plugs and wires

**Halon** · 05-10-2008

Well if the check engine light is on, that's a good place to start.

cman3000 · 05-10-2008

I have an obd2 scanner and i am waiting for the adapter in the mail so i can use it on the talon.

**Halon** · 05-10-2008

Try Vfaq my friend.

http://vfaq.com/mods/wayback/BradBau...ical/code.html

cman3000 · 05-10-2008

i have a code 12,13 and 25

cman3000 · 05-10-2008

Volume air flow sensor, Intake air temperature sensor and Barometric pressure sensor

cman3000 · 05-10-2008

So im assuming this is all due to my MAF

**Halon** · 05-10-2008

Is your MAS plugged in?

cman3000 · 05-10-2008

lol honestly i dont know

cman3000 · 05-10-2008

I checked and found a 2 slot female plug but dont know where it goes

**Halon** · 05-10-2008

If you want help, you need to be a little more descriptive. There are a lot of plugs in the engine bay. The MAS is located right before your Air Filter. There should be a cable plugged into it.

Go spend some time studying up on Vfaq, there's a lot of good info over there.

cman3000 · 05-10-2008

The cable is plugged into the MAS but on the harness going from that to the translator box that is where the cable is not plugged in. im goin to VFaq right now.

blageo23 · 05-10-2008

Does your car have its emissions?
These are the only plugs I can think of right now that are 2 wired in the engine bay:
Backup Light Sensor
Coolant Temp Sensor
Injectors
All Emission Soleniods
Knock Sensor
I believe that is it

cman3000 · 05-10-2008

blageo23 · 05-10-2008

Post up the color wires. That would help for people who have wiring diagrams.

munchgsx · 05-11-2008

The smaller one is for the stock BCS. The big plug by the brake booster is for your emissions stuff which looks removed. Do you have the ISC removed cause thats what the other plug looks like?