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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 05-08-2009, 02:11 AM   #1 (permalink)
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Angry Check Engine Light (fuel injector)

HI. I have a '92 318is and i recently (tonight) changed one of my fuel injectors. well, the engine runs fine, better actually, but the problem is that the check engine light is on. it's not flashing, no intermittent light, just on, solid.

the car runs fine like i said, but i need help. what should i do to fix it, and what exactly could it be?

thanks for your help. if you need any more information just comment.


**update** ok, so the light goes off at high rpm and comes back on when the rpm's go back down. dunno if it will make a difference, but the more info the better.

on another note. the obd 1 doesn't seem to yeild anything. "turn the key to the on position and press the accelerator 5 times before 5 seconds and you'll get a code..." well, no. the light just stays on.
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Last edited by acid86; 05-08-2009 at 02:40 AM.
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Old 05-08-2009, 04:12 AM   #2 (permalink)
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Try disconnecting the battery for 30 minutes, if you have a coded radio make sure you have the code.
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Old 05-08-2009, 06:52 AM   #3 (permalink)
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I have seen a post on another forum a while ago concerning an e34 tds that did the same thing with the light coming on just over tickover at about 2k revs and then going off at or near red line.This was put down to the injector pumps static timing being timed up wrong,the ecu ran out of scope on its inbuilt maps to control the pumps advance retard so it lit up the warning lamp.
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Old 05-08-2009, 08:26 PM   #4 (permalink)
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Originally Posted by MADDOUG View Post
I have seen a post on another forum a while ago concerning an e34 tds that did the same thing with the light coming on just over tickover at about 2k revs and then going off at or near red line.This was put down to the injector pumps static timing being timed up wrong,the ecu ran out of scope on its inbuilt maps to control the pumps advance retard so it lit up the warning lamp.
did the thread ever figure out how to solve it?

and i tried the batt terminal thing, didn't work.

any other ideas?
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Old 05-09-2009, 03:58 PM   #5 (permalink)
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Yes the owner had the codes read before he posted 'fuel range out of calibration' I recall was what the code reader came up with.It was a site for running veg oil as fuel so someone had an answer straight away to the problem,most who run veg alter their pump timing by moving the pump.I find it strange yours still runs ok with the light on,no going into 'limp mode' and losing power or running rough ?
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Old 05-10-2009, 01:30 AM   #6 (permalink)
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Originally Posted by MADDOUG View Post
Yes the owner had the codes read before he posted 'fuel range out of calibration' I recall was what the code reader came up with.It was a site for running veg oil as fuel so someone had an answer straight away to the problem,most who run veg alter their pump timing by moving the pump.I find it strange yours still runs ok with the light on,no going into 'limp mode' and losing power or running rough ?
no none, what so ever. the light however, is being rather finiky, sometimes it's a constant light and others, it goes off if the rpms are high, and even stranger, sometimes, the light will go off if i barely touch the gas.

also i was wondering if there is anything im' doing wrong with the odb I diagnostic. i put the key to the on position and i pump the gas 5 times to the floor within 5 seconds but no codes display. i suppose if i can figure that out, then maybe it'll be easier to diagnose what exactly is wrong. maybe i'm missing something. i tried taking everything i had apart and making sure that everything was correct. still, the light stayed on. however! i did notice that the new fuel injector had something different than the rest. the spray nozzle had a different order, or stack up if you will. it went "nozzle, rubber o ring, plastic washer, and then the rest of the injector" when the rest of the injectors had the plastic washer and o ring reversed. i tried to slide the o ring over the washer but, no dice.

any thoughts?
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Old 05-15-2009, 04:35 AM   #7 (permalink)
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vegetableoildiesel.co.uk - replace one injector... or replace them all ? - Powered by XMB It may be the injector you fitted is wrong type so presuming your cars ecu can pick it up that may be the cause of the light.Have a read of the posts in the link above,one post mentions how ecu monitors feedback from each injector.
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