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Hello again, still haven't fixed the EGR flow. I found out how to reset the computer/ ECU. Under glove box, tough to get too... I would have put it back in the other way so the screw faces out, but there were wayyy to many wires. You'll know what I mean if you ever have to do it... Anyway, the damn code still hasn't changed. PO400 from the computer, and 32 from the Check Engine Light blink. ... I didnt really expect it too. Heh. I called a few Infiniti dealers and they say quote, " ahhhh figure about 5 to 6 HUNDRED dollars... " PFFFFFF, they heard a click real fast. :o I found a OEM Service Manual for the J30 on EBAY believe it or not... That set me back less then 40$. I have also subscribed to all alldatadiy.com and for the J30 the site is slightly useless. At any rate, I have located the pipes that run a long the block, and I am confident I can remove them at least far enough to poke a wire around. I just want to wait until I get the book. I have been researching this for a long time, and I really can't wait to get in there. As anyone who has dealt with the EGR can tell you, its damn hard to get too. I have seen pictures of it on other cars, and its right on top, easy to clean the gasket and locate all the ports. Silly design. Anyway, step by step for the DIY ers out there heres where Im at and feel free to email with any questions, when ever, I can send pics and if the service manual has tips, I can include those as well.
* First, Googled PO400 Code. Found this and many other sites. Learned a lot about what the EGR is/does. Seems to be common with high mile J30 s. ...
*Determined it was still safe to drive the car with the CEL on.
*Located, EGR on engine... cursed. a lot. damn thats ugly. :'( If you feel around under the "saucer" you can feel a rubber gasket, with the car SLIGHTLY warm, push up on it while in idle. If it slows the EGR is not working, if the idle stays at about 700-800, then there is a clog. Carbon is either in a hose, the pipes described above, the intake "collector" and/or the throttle body. Also feel around the gasket to make sure nothing got stuck in there somehow. It should glide smoothly up and down.
*Next test, while engine is still in idle, still warming up, rev it up a little... you should feel that same rubber gasket move with the RPM. Smooth. Mine did. I take that to mean all is well with the VAC system.
*Checked temp sensor. Easy. Ohm meter to the connector. Follow the long white jacket wire to the top of the engine. Should be about 250kOHMs when the engine is still HOT.
*Checked the solenoid for proper speedy function. Do this by disconnecting the two tubes on the rear of it. Then, while the engine is still at least a little warm, start, and rev it a little, you can feel the vacuum switch from to tube to tube. The EGR tube seems to have a stronger "suck" then the one that goes to the MAF area. ... ? for mine anyway.
*All systems seemed good. Called around, Googled some more and came to the clog conclusion. I refuse to pay some wiener 500$ to clean a tube in my engine. 160 is one thing, but not 500! It seems to be simple enough, there appears to be only 3 screws attaching each exhaust tube to the intake, one back a bit, and two the end of it by the intake. Then, there is a bit of hose before the EGR, making this whole part flexible. Well, thats the idea anyway. My plan is to WD-40 these 8 year old, super heated screws for about a day... then take em out, clean the tubes and pray. Maybe poke around a little in the intake with a "lint free" pipe cleaner... If I find anything, I like to use a little vacuum I found. I attached an old vacuum tube to it, doesn't suck to hard, but will surely hold a carbon ball. I want to get as much out as I can. Of course.
I will post an update when this happens. I hope to hear from others that have this same problem. I think this needs to be discussed at length. Its hard to find really useful info on the more technical parts of the engine, and its parts.
Yikes, I really rambled... thanks for making this far, hope it helps. :o
email ----> myi7i (AT) hotmail (DOT) com no spams....
And do those replies up there make sense to anyone? WTF?? lol.
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