2G Too many car problems..

[Jonny J]

Where to begin. I love DSMs, but this is crazy. I've never ran into as many problems than I have with this car.

Firstly, my car idles at about 1500 RPMs on a good day and over 2k on a bad day is this normal?

Secondly I bought this car with the mods that are on it. I was told it had aftermarket exhaust and BOV. The exhaust sounds sick but the BOV, I can't tell if its hooked up right because right now I got a huge boost leak somewhere. My boost gauge won't even go to 1 psi, the car stalls up and the a/f ratio goes lean as hell before the boost can even kick in and the guy bolted a filter to the end of my MAF intake. I took off the sensor to see the intake pipe was full of gunk, idk if this would cause problems or not.

My check engine light came on and threw the codes P1400, P1500 and P0710. But now its off. I guess my question be where are common are common boost leaks. Also if I uploaded pictures could someone ll me if the BOV is set up right, and how could you tell if your wastegate is stuck open? Because I can hear a whooshing sound when I'm driving so I assume its coming from somewhere I meantioned above.

 

[PANDARESCUE]

You need to upload a pic of not just the boost guage itself but also of where the line for it hooks to

I would pick up some electronics spray cleaner for that maf I would bet that to make a huge difference

 

[TSI_93]

I would pick up some electronics spray cleaner for that maf I would bet that to make a huge difference

Worst idea ever. Even 90% of MAF cleaners are not safe to use on our MAF sensors.

 

[eclipsyco]

Where to begin. I love dsms, but this is crazy. I've never ran into as many problems than I have with this car. Firstly, my car idles at about 1500 RPMs on a good day and over 2k on a bad day is this normal? secondly I bought this car with the mods.that are on it. I was told it had aftermarket exhaust and bov. The exhaust sounds sick but the bov.. I can't tell if its hooked up right because right now I got a huge boost leak somewhere. Because my boost gauge won't even go to 1 psi, the car stalls up and the a/f ratio goes lean as hell before the boost can even kick in in. and the guy bolted a filter to the end of my maf intake and I took off the sensor to see the intake.pipe was full of gunk, idk if this would cause problems or not. My check engine light came on and threw the codes p1400,1500 and 0710. But now its off. I guess my question be where are common are common boost leaks. Also if I uploaded pictures could someone ll me if the bov is set up right, and how could you tell if your wastegate is stuck open? Because I can hear a whooshing sound when I'm driving so I assume its coming from somewhere I meantioned above.

Hello! Hey bro sound like many similar problems I used to had with my car as well my rpm fluctuates between 800 and 1000 when cold and warm between 1200 and 1500. I changed the ISC/IAC solved the problem got it for like $45 on ebay. The 1500 code is 90% of the times the alternator about to die and 10% bad ECU, I still have this code tho but car runs great. Code 1400 is the MAP sensor it's bolted right on top of the intake mani got on for like 12 bucks from eBay as well those 2 codes come and go idk why is just happens by the way I scanned the car with dsmlink cause a regular obdII wouldn't show me any codes. The 0710 code I don't know what is it but you can search it here. Now do a full tune up change everything don't trust what previous owner said change belts all belts use OEM always change al fluids, spark plugs and wires I also changed the battery, brake pads and tires on mine. Get an engine management tool like dsmlink too.
Good luck bro

 

[jpmxrider489]

You need to upload a pic of not just the boost guage itself but also of where the line for it hooks to

Not a bad idea. I would do another leak test.

 

[Jonny J]

Whats a ISC? Sorry Im a rookie at this

Ok this is the best picture I could get.... see the tube from the bov goes back to the throttle body, and theres that hose that runs back inside and goes to my boost gauge.

 

[joescool2008]

Sounds like the boost controller is hooked up backwards or missing.

 

[Jonny J]

Where would that be located..

 

[eclipsyco]

Whats a ISC? Sorry Im a rookie at this

It is Idle Speed Control aka IAC Idle Air Control it a valve located right under the throttle body but on the same "housing"
it could be gold or black gold color are older but they are all swappable...
Here is a good how to DIY video
DSM ISC motor testing & Replacement - YouTube

 

[gusu]

It is Idle Speed Control aka IAC Idle Air Control it a valve located right under the throttle body but on the same "housing"
it could be gold or black gold color are older but they are all swappable...
Here is a good how to DIY video
DSM ISC motor testing & Replacement - YouTube

All except for the 90 which was located on the front of the throttle body in the worst spot ever and has a unique plug.

 

[eclipsyco]

All except for the 90 which was located on the front of the throttle body in the worst spot ever and has a unique plug.

Exactly! sorry I didn't mention that by bad