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    Engine build-up....I have a delimma

    My take on it is this: The higher mileage engine isn't more likely to snap a rod or anything like that than if it was newer, but your compression may be low, hindering your ability to make power. I would do a compression test. You can also do things like pour in a bit of oil in each cylinder...
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    Vacuum line from oil filler neck?

    This is almost a waste of a thread, but I was wondering what the purpose of the vacuum line that goes from the oil filler neck to the throttle body is? I pulled it off to check for leaks but there wasn't any vacuum on it. :shrug: I always thought it was like a 2nd PCV valve, giving the...
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    People with Longtubes...

    Nope mine idles fine when it's cold. I used to have a warm idle surge problem for the last year and half but it seems to have disappeared with my recent battery unplugging. It's been 3 days and not one surge. :shrug:
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    Throttle Body Coolant Bypass?

    Okay, I just bypassed the thing. I put an extra vacuum cap I had lying around on the nipple that I could actually get to. I wanted to do the same for the other side, but the thing was damn near impossible to reach. So I just put a bolt in the end of the other hoes and clamped it down. I...
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    Throttle Body Coolant Bypass?

    So you think the best way to ditch it would be to put a little metal pipe inbetween the lines to simulate the TB passage? Or is there a better way?
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    Throttle Body Coolant Bypass?

    Cobra intakes don't have them? Hmm. Isn't the whole point of it to make sure the throttle body plate doesn't get frozen stuck? It seems that the throttle body would heat up eventually, just being in the engine bay.
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    People with Longtubes...

    Interesting. I've been told that closed loop was related to coolant temp so much I believed it. I always wondered why the ECU cared what the coolant temp was when it started looking at what the o2 sensors were saying. :shrug: So, any word on if the o2 sensors heat up just from switching...
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    Throttle Body Coolant Bypass?

    I've drained my coolant to fix a leak, and while I'm at it, I've been thinking about bypassing the coolant passage through the throttle body. It's obvious that the coolant will heat up the throttle body and part of the upper manifold, that has to cost SOME power, however little. What are the...
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    People with Longtubes...

    Huh? My car reaches normal operating temperature, if that's what you mean. If your car is running too cool, it won't ever reach closed loop operation and you're guaranteed to have bad gas mileage.
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    People with Longtubes...

    Oh, my gas mileage is terrible. I'm talking 15 mpg or less. And no, I don't go WOT 90% of the time. You can smell the excessive fuel coming from the car at idle. You can smell it from 10 feet away. Althought black tailpipes don't necessarilly represent the car is running rich, I think it is...
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    People with Longtubes...

    So you've noticed your car running really rich and having black tailpipes? =\ I'm curious, what kind of mileage do you get?
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    People with Longtubes...

    Did you ever notice problems with getting trouble codes 41, and 91 (oxygen sensors showing lean mixture), or any problems related to oxygen sensors or running rich when you installed the longtube headers? I've heard that this can cause the oxygen sensors to show a lean mixture, causing the...
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    Oxygen sensor ground location?

    Thanks guys, I found it. It was covered with a shield so I couldn't see the orange. I traced it down to the bolt, where it connects to the braided wire that goes back to the firewall. I can't see it to tell how it's grounded, because I was feeling my way around. Oh well, that's not my...
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    Oxygen sensor ground location?

    Really? I know it passes through the white one. How far from the white one does it come out? This is really driving me crazy.
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    Oxygen sensor ground location?

    I've checked around there and can't find it. I searched another forum and found that that very orange wire passes through the big white wire connector the sits on the back of the upper intake. Sometimes referred to as the salt shaker since there is a similar black one right next to it. I...
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    Oxygen sensor ground location?

    Sorry about starting a new post, but the title of this one is a little more clear and related to what I need. In an effort to track down why my o2 sensors aren't working, I've started looking for a ground that I'm told is somewhere behind the engine. It supposedly has an orange wire. My car...
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    Which o2 sensors do you use?

    I hope that diagram isn't too much different than mine. I have a 93 computer/engine and the label says 88-91...
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    Which o2 sensors do you use?

    Well, I've actually disconnected the oxygen sensor harness to test it and I still get the codes for the failed sensors. The oxygen sensor harness is good BTW. Do you have any idea where the sensor ground is? I know where the oxygen sensor harness plugs into the main harness, though. And do...
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    Which o2 sensors do you use?

    Alright, I pulled the kick panel off, very easy. Now I can see the side of the ECU where the big connecter plugs in and gets bolted down. Yeah, probably nothing wrong there. I see one ground on the inside of the car, under the carpet. Any idea what that is? It looks fine, but I'm going to...
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    Which o2 sensors do you use?

    That's great! Thanks a bunch! I'll check this out right now!
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