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WIRE HARNESS PROBLEM

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Old Feb 11, 2008 | 03:00 PM
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WIRE HARNESS PROBLEM

i dont know the firing order or piston order on this engine. but i posted on a problem i have been having for a few days now and have found out well almost found out what it is. The Story - for the past couple of days my check engine light has been coming on at random. the engine will start missing and has a rough idle and lose of power. it did it a couple of times today and finally stayed on and is running like poo. i did a couple of test when i got home and found out that the plug that plugs into the coil on the back far left is not letting the plug fire. i swapped plug and then coils and it all points to the plug itself. i only have a light tester to test hot and grounds. the plug is showing hot on the middle plug prong while running same as the rest do. i hope i am making sense. when i unpluge any other plug to the coil the engine loses power to the coil and runs like so. when i unplug the plug to the one i am having trouble with it shows no sign. so i have a plug issue right. what can i do to fix this.
Old Feb 11, 2008 | 03:15 PM
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Originally Posted by Thanatos
i dont know the firing order or piston order on this engine. but i posted on a problem i have been having for a few days now and have found out well almost found out what it is. The Story - for the past couple of days my check engine light has been coming on at random. the engine will start missing and has a rough idle and lose of power. it did it a couple of times today and finally stayed on and is running like poo. i did a couple of test when i got home and found out that the plug that plugs into the coil on the back far left is not letting the plug fire. i swapped plug and then coils and it all points to the plug itself. i only have a light tester to test hot and grounds. the plug is showing hot on the middle plug prong while running same as the rest do. i hope i am making sense. when i unpluge any other plug to the coil the engine loses power to the coil and runs like so. when i unplug the plug to the one i am having trouble with it shows no sign. so i have a plug issue right. what can i do to fix this.
uh, you could have what they call a burnt valve. Do a compression test on all six cylinders and then post the results.
Old Feb 11, 2008 | 03:17 PM
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Sounds like a bad injector..


Did you check the ecu for codes?
Old Feb 11, 2008 | 03:17 PM
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Originally Posted by Mike90SE
uh, you could have what they call a burnt valve. Do a compression test on all six cylinders and then post the results.
why would it be a burnt valve if the problem is in the harness.
Old Feb 11, 2008 | 03:41 PM
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Originally Posted by Thanatos
i dont know the firing order or piston order on this engine. but i posted on ......... ...
1-2-3-4-5-6

1 3 5 driver side->>>
2 4 6
front of car
|
v
v
v
Old Feb 11, 2008 | 03:45 PM
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Originally Posted by capedcadaver
1-2-3-4-5-6

1 3 5 driver side->>>
2 4 6
front of car
|
v
v
v
wow thanks for this. i really appreciate it.
Old Feb 11, 2008 | 03:46 PM
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Originally Posted by Greeny
Sounds like a bad injector..


Did you check the ecu for codes?
ok Greeny i did the test and it says codes - 34 and 51
Old Feb 11, 2008 | 03:50 PM
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Originally Posted by Thanatos
ok Greeny i did the test and it says codes - 34 and 51
what does a detonating knock sensor and a fuel injector curcuit open mean.
Old Feb 11, 2008 | 03:52 PM
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Originally Posted by Thanatos
what does a detonating knock sensor and a fuel injector curcuit open mean.
Bad knock sensor and a bad injector..
Old Feb 11, 2008 | 03:56 PM
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Originally Posted by Greeny
Bad knock sensor and a bad injector..
wow. so were is the best place to get new injectors. i guess i can get the knock at autozone right. i guees it would be best to replace all inj. at the same time too also.
Old Feb 11, 2008 | 03:58 PM
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i wonder if this could be the reason i have a rough idle after reving. what do you think?
Old Feb 11, 2008 | 04:00 PM
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Originally Posted by Thanatos
wow. so were is the best place to get new injectors. i guess i can get the knock at autozone right. i guees it would be best to replace all inj. at the same time too also.
The best place to get new injectors and knock sensor would be CLICK HERE

Be prepared for a $600 parts bill for 6 new injectors..
Old Feb 11, 2008 | 04:01 PM
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Originally Posted by Thanatos
i wonder if this could be the reason i have a rough idle after reving. what do you think?
yes,a bad injector will cause a horrible idle.
Old Feb 11, 2008 | 04:06 PM
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hey Greeny i really appreciate you helping me on this. i just started it agian a few min ago and now it is running fine . go figure.
Old Feb 11, 2008 | 04:09 PM
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Originally Posted by Thanatos
hey Greeny i really appreciate you helping me on this. i just started it agian a few min ago and now it is running fine . go figure.
Heh..I've had 2 injectors go out on my ve...both started out the same way as your ve is doing now...at first intermittent...then steadily worse until they stopped working altogether..
Old Feb 11, 2008 | 05:38 PM
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Originally Posted by Greeny
The best place to get new injectors and knock sensor would be CLICK HERE

Be prepared for a $600 parts bill for 6 new injectors..
do i have to register to get any info.
Old Feb 11, 2008 | 05:43 PM
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send him a PM
internetautomar
Old Feb 11, 2008 | 05:43 PM
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Originally Posted by Thanatos
do i have to register to get any info.
Nope..just click on your year model on the left on the page,then follow the prompts from there..


This might make it easier for ya..

Injectors--->http://www.internetautosupply.com/ca...c41167bf939b15

Knock sensor--->http://www.internetautosupply.com/ca...c41167bf939b15
Old Feb 11, 2008 | 06:56 PM
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Originally Posted by Thanatos
why would it be a burnt valve if the problem is in the harness.
Ok, I missed that one....but from your description, to me it sounded like it could have been a burnt valve. That is, didn't matter what coil you had on that cylinder, it stilled skipped. I guess I missed something.

We can't all be right all the time. LOL
Old Feb 13, 2008 | 11:59 AM
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Originally Posted by Thanatos
i wonder if this could be the reason i have a rough idle after reving. what do you think?
Can also be sticking IACV - needs cleaning 'every 80k' ... for VG see http://www.cardomain.com/ride/748507/4
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