Question about 2000 Kia Spectra

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Kia specrta idles fine but irratic spark when accel.....

2000 kia spectra 1.8 DOHC coil over, idles fine until your try and rev the engine. having a scope hooked up to the cam and crank sensor to make sure timming is correct while this ''missfire'' is happening. timing is correct according to my cam signal and crank signal. spark happens when it should at TDC.
signal to ecu is fine. upon acceleration the spark becomes irratic and the ecu is sending wrong info out to ignition parts/system. so i know its not coils or plug or any thing of that nature. its not fuel because i can clearly see an incorrect spark pattern with the scope. well with customers request and funds we got a used ECU. well i have the exact same problem.. I would love to get a new ecu in the car but can go swap around parts. junk yard wont send me another ecu because of the non-returnable ****.

just wondering if anyone has run into this problem and hopefully have fixed it with the ecu? suggestions are welcome along with some supporting logic behind it. i have the equipment to check before i replace a part.

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  • Anonymous Feb 09, 2009

    TPS appears to work fine. there is no ICM on a coil over. its built into the ECU aka coil driver.

    the ecu thinks there is a higher load via MAF. so i tried to simulate an idle MAP with the old one dissconnected. nothing changed. also owner claimed to have the MAF replaced already.

  • Michael Gutwein Feb 09, 2009

    ^^ was me forgot to sign in

  • Michael Gutwein Feb 09, 2009

    ^^ was me forgot to sign in

  • Kiley Gilley May 11, 2010

    Have you checked the TPS? or the ICM?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2000 Kia Spectra

http://www.kiatechinfo.com/index.asp

Good source for Kia its free to register NO STRINGS

Posted on Jun 01, 2009

alicantecoli
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SOURCE: XJ40 1992 Need schematic/logic inside the ECU

your joking ,ECU diagram ,now thats like asking the queen for the keys to the crown jewels,If no grnd for the fuel pump then you have a problem with the alarm system

Posted on Dec 14, 2009

carsandcomps
  • 722 Answers

SOURCE: Can not start 2000 Kia Sportage with 161 K Miles.

It sounds like the timing is not set correctly. When you installed the timing belt, there are two dots on the crank shaft and cam shaft sprockets - these two dots need to line up as close to eachother as possible. This is done by putting the belt on the two sprockets while both dots face eachother - lay them down on a table or flat (clean) surface with both dots facing eachother (crank shaft sprocket dot should be facing up, and cam shaft sprocket dot should be facing down) - carefully insert the sprockets onto the cam shaft and crankshaft simultaneously - this usually takes some finess and patients - once they are in place and you are confident they are lined up, you can put the coverback on. Also, make sure (first) that the number one cylinder is at TDC (top dead center, or in the "up" position. Pull the #1 plug out, manually crank the engine over or "kick" the engine over with the ignition (have someone do it for you). You can use a small screwdriver,inserting into the plug hole (not all the way) and when you see it pop up, poke it in again to feel the piston is at it's maximum height (if you hold the screwdriver on the cylinder and feel the screwdriver / piston go down, bring it back up again.
With it at top dead center, and the two dots facing eachother, put everything back together. Make sure all gaskets are not "bulging" out of the cover. (if applicable) .
If this is all done correctly, the car should start with no problem.
Please let me know if you need further assistance.
carsandcomps,
Guru, Premium Expert @ Fixya.com

Posted on Aug 10, 2010

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Good source for Kia its free to register NO STRINGS

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