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New engine!!

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    #1

    New engine!!

    So, I'ma start off with thanking everyone on the site. If it wasn't for this site, honestly...I woulda gotten rid of the car when the engine blew. But, I didn't get rid of it. Got the estimate today. 940 bucks. Got the engine from Henderson Auto in PA, for 300 bucks. It's an A1. My original's an A6. No big deal though, cause the guy had no problem changin' my intake manifolds. He replaced quite a bit on the engine, includin' seals, both timing belts, and the waterpump. For an engine I paid 300 bucks for, when he let me start it Saturday afternoon, it runs better than my other one did when I first got it! Tuesday I'll have the money to get it out of the shop and I'll be back on track. But, beyond the excitement, the guy came across oneeeeeeee problem. See, I had my header replaced with a dc-sports header. The guy that put the header on, and did my whole exhaust, said he couldn't find the wire for my upstream oxygen sensor. So, he just plugged the o2 sensor in, but never hooked it up. Thing is...shouldn't the engine I just got....have one in the same place? He said he couldn't find any hookup for the upstream. I was wonderin' about it anyway, cause after I got the header, and exhaust done....I actually lost about 40 miles to the tank. I'd get around 330-340 to the tank, and it went down to about 280-290. If anyone's got any input, lemme know!
    98' Mustang 3V Swap
    11' VW CC R36
    Tags: None
    #2
    Still running the A1 camshaft, with the A6 intake, and ecu.
    I would say thats making it run slightly rich causing the lower gas mileage

    Edit: do you mean he plugged in the oxy sensor wiring, but diddn't fit the sensor? Or vise versa?
    Last edited by evil_demon_01; 03-30-2008, 01:01 AM.


    Car Safety / General Servicing Checks --------Basic suspension checks

    My 5.7 LS1 Holden Ute

    A "Finished" project car is never finished until its been sold.

    If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.

    Comment

      #3
      the a1 and a6 o2 senors are in different spots on the header. The person ahead of me said about the ecu making you run richer I agree, but 40 miles seems too much imo. see if you can find an lx or a dx ecu and see how it runs then who knows.

      "Real intelligence is like a river; the deeper it is, the less noise it makes.”

      Click Me

      Comment

        #4
        the o2 sensor shouldn't be a problem. on your A6 it was plugged into the flex pipe area, on the A1 it should in the manifold. so the wire is a little longer since you're basically downgrading your engine.

        Comment

          #5
          Originally posted by NorcoAccord
          the a1 and a6 o2 senors are in different spots on the header. The person ahead of me said about the ecu making you run richer I agree, but 40 miles seems too much imo. see if you can find an lx or a dx ecu and see how it runs then who knows.
          Though then it won't have IAB control. If you could get hold of the motor and swap the camshafts It would be good


          Car Safety / General Servicing Checks --------Basic suspension checks

          My 5.7 LS1 Holden Ute

          A "Finished" project car is never finished until its been sold.

          If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.

          Comment

            #6
            Originally posted by evil_demon_01
            Though then it won't have IAB control. If you could get hold of the motor and swap the camshafts It would be good
            he could just run it by vaccum or so i've heared.

            Comment

              #7
              Originally posted by Leung
              he could just run it by vaccum or so i've heared.
              I heard you couldn't - Full throttle = no/low manifold vacuum


              Car Safety / General Servicing Checks --------Basic suspension checks

              My 5.7 LS1 Holden Ute

              A "Finished" project car is never finished until its been sold.

              If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.

              Comment

                #8
                The plug's still in the header. Just, can't find the wiring? I didn't know if this car has 2 o2 sensors, or just 1. And if I was to get an lx or dx ecu, wouldn't that defeat the purpose of swappin' the intake manifold? And I haven't driven the car yet. Just, before the engine blew and all, when I got the header and exhaust done, just seemed like I lost about 2-3 miles to the gallon. So I'm pretty sure there was a wire for the o2 sensor there before. I'll have to look under the car, and see if they placed the other o2 sensor somewhere else, and used that wiring? I'll take pictures and all Tuesday. It's a 2 piece header (pretty sure they all are), and right where they connect, is where the upstream o2 sensor is. Can't remember if that's where it was on the old header.
                Last edited by Gotz Cb7; 03-30-2008, 10:26 AM. Reason: submit happy
                98' Mustang 3V Swap
                11' VW CC R36

                Comment

                  #9
                  It's hard to find parts from an A6. They're kinda rare. Maybe I can find where he got the engine taken to. Most likely, a junkyard. But what else should I get from the a6, that I'd need? I'm pretty much gonna try everything, to get this A1 back to my A6. Automatic + A1 = Noooooo
                  98' Mustang 3V Swap
                  11' VW CC R36

                  Comment

                    #10
                    which engine harness did the mechanic use? If he used the one that came with the a1 engine, the wiring for the o2 sensor will be up front somewhere where the 2 pieces of the header join together, and you'll have to extend them. Also, if he used that harness, there is no hook up for the IABs. If he used the harness from your old a6, then the 02 wire should be dangling down near where your oil filter is, To put your car back to a6 status you'll only need the cam/head from an a6 as you already have the manifold and ecu that came with the car,

                    Comment

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