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This is a discussion on 02 Wrx won't start within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; whelp, my friend started up the car. Only code that came up was "intake air temperature". I don't know if ...

  1. #16
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    whelp, my friend started up the car. Only code that came up was "intake air temperature". I don't know if it's the MAF sensor again. That would mean that either I had 2 ****ty MAF sensors in a row (unlikely) or something else. My friend checked the sensor and said it wasn't broken

    He started the car up and grey smoke started coming out of the exhaust which smelled like gas.

    They are now trying to check out the coils to see if that's the problem but they are located in pretty inaccessible spots

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  3. #17
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    yep, I'm screwed. Friends have no idea watsup which means I'm gonna have to take it to get fixed and I have 0 dollars at the moment. Sick!

  4. #18
    Registered User poly_poly-man's Avatar
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    http://www.youtube.com/watch?v=FBUYs539cy4 - might help? at least comment on it with your issue.

    Another thing I would check is your throttle - clean it and make sure it's in the right position naturally, and check the tps... it's a longshot, but I'd look at it.
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  5. #19
    Registered User Skreekin's Avatar
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    What mods have been done to the car? If you don't know, you'll need to get in touch with the previous owner and find out. Sounds like the car had issues before he sold it, probably why he was getting rid of it.

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    It's just got an engine remap, 2 pounds more boost and straight exhaust

    He put 1500$ into it and the car was working again. He wanted to sell it because he has 2 track cars and this was his daily drive. He didn't want to have to ever put his head under the hood to fix this car. When he had to drop 1500$ into it, he decided he would fix it and then sell it and buy a new car with 100k warranty so he didn't have to worry about it. He's very good with cars but he doesn't want to work on his daily drive.

    What's going on now is the exact same problem that was occurring when he took it to the dealer to get fixed. The problem was seemingly fixed so I don't think he purposely did this to me

  7. #21
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    I might buy a new MAF sensor and see if that works. then drive it to a shop or the dealership. Perhaps there is some kind of wiring or something that is frying the sensor

  8. #22
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    A MAF problem would generate a CEL. It is IMO not the sensor but then again I'm not near the car.
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  9. #23
    Registered User Skreekin's Avatar
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    Maybe it's an ECU problem. I was hoping that you were stock, it would make things easier.

  10. #24
    Registered User Heide264's Avatar
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    Might just want to try finding somebody locally with an open source cable to check out your tune, or save it and then remap it back to stock. Could make trouble shooting easier at least.

    I'd second the cleaning the throttle body.

    Also, MAF sensors are supposedly (no first hand with them) easily damaged. Even though the sensor was replaced, doesn't mean it wasn't damaged in the process.
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    I dropped the car off friday but it won't be checked out until tuesday. Funny thing is, I called triple A for a tow and while waiting for them the car started right up. I drove it to the shop 3 miles away; it drove perfectly and no cel. Whatever the problem is, it's something minute and shouldn't be too costly to fix

    The original owner believes it's the MAF harness that's giving me troubles. The mechanic (who my friend swears by) says that it's the Maf sensor. That it technically works but it's not the exact one I need and therefore it gets whacky when the car is hot.

    I asked the original owner if the MAF sensor he put in was OEM. He got new spark plugs and a few things installed by the dealership but he purchased the MAF sensor at a parts store because the cost was way lower. He emailed me this

    "I am not sure who makes it but it's one of the standard rebuild/core charge units that are supplied by auto parts stores. it may be a Cardone or a Napa rebuilt OEM unit. They take the damaged one as a core when you buy the rebuilt one."

    So it could very well be the sensor. It could be the wiring harness. Wouldn't a dirty throttle body give me a problem when cold too?

    thanks for all the help!!

  12. #26
    Registered User poly_poly-man's Avatar
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    Quote Originally Posted by Palam7 View Post
    So it could very well be the sensor. It could be the wiring harness. Wouldn't a dirty throttle body give me a problem when cold too?

    thanks for all the help!!
    It's sounding more and more like either sensor or sensor wiring all the time.

    However, it certainly can't hurt to clean your tb. It explains why the issue sometimes fixes itself when you hit the throttle a little, and depending on the consistency of the carbon, could have different behaviors hot and cold.
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    Update: It keeps getting better

    They got a new sensor from subaru (could have done this myself). Said it was the sensor that was causing the problem. It was a rebuilt piece of junk apparently.

    So apparently, the car was running super rich. Now that the car is back to it's normal levels, I have misfires on 1 and 3.

    He speculates it's either my fuel injectors or my timing belt. I do need a timing belt soon....

    I'm hoping for the best. I really can't afford a 900$ timing belt job at this very moment. So right now I'm 400 dollars in (300 for sensors, 90 for labor) and he needs another hour tomorrow to diagnosis this new problem.

    sigh

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    What should I do with these guys? I left the car there last thursday because he wouldn't be able to look at it until tuesday but he said he would try and sneak a look on the weekend.

    Called me wednesday and gave me the news about how he would need to further diagnose the problem. No call thursday and I didn't call because the woman who answers the phone gives me an attitude when I try to check on MY car.

    I call this morning first thing and she says he's with someone and will have to call me back. An hour later, no call back.. Should I walk over there and get pissed or what?

    I have a godamn job that I need to get to, luckily I was off yesterday and today

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    He called back and said that I should come get the car. I'm guessing he doesn't really know what's up with it

    He said the timing belt could be off by a tooth, or it could be the injectors or something about the fuel over those cylinders, although he didn't see a leak. He said the engine light hasn't come on at all.

    I have to get the timing belt changed anyone, so hopefully that's it. Don't have the money atm to do that

  16. #30
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    Just a follow on from this one. I had identical issues with a WRX, I tracked it to the MAF sensor. Going out on error during the heat soak after stopping. To prove it its quite simple. When it wont start. pour a cup of water over the sensor. it will start immediately.

    I am replacing it at present.

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