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Old 11-21-2010, 04:58 PM   #1
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Default Engine removal n00b

Hey guys,

I was disconnecting all the electronics in the engine bay required to pull the engine. I have the whole upper engine harness disconnected and most of the stuff under the IM.

I turned the ignition on to push the car back into the garage with steering. I noticed my fuel pump would not shut off when the key out and I was able to use the HVAC still. Is this normal? I don't know why I put the key in the run position.
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Old 11-21-2010, 05:07 PM   #2
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why wasn't disconnecting the battery the first step?
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Old 11-21-2010, 05:16 PM   #3
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Im surprised the + battery on the starter or alt didnt short out on something.
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Old 11-21-2010, 07:26 PM   #4
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Because I'm a n00b. I was only separating connectors anyway. So, back to the original question.
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Old 11-21-2010, 08:12 PM   #5
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Unless you unplug the three connectors at the pcm, your pump and accessories will still be powered even if you've unplugged most of the **** under the hood.

Disconnect your battery.
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Old 11-21-2010, 08:42 PM   #6
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Is it normal to have the pump and accessories still run while the key is out?

Battery has already been removed
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Old 11-21-2010, 08:55 PM   #7
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Quote:
Originally Posted by dgmorr View Post
Is it normal to have the pump and accessories still run while the key is out?

Battery has already been removed
No, and good. Disconnecting the battery should always be the first step, one that should be common sense also... you wouldn't try to disassemble the engine with it running would you? So why would you work on anything electronic that is still getting power?
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Old 11-21-2010, 09:28 PM   #8
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Yes yes moms I took your advice and disconnected the battery. I simply forgot - very extreme analogy. Last I checked there is no power going to things like TPS, EGR, VVT while the car is off...I have not removed the main leads to the starter yet. This is more like working on a light fixture with the breaker on and switch off
Thanks for the answer on this.
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Old 11-21-2010, 10:03 PM   #9
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Wouldn't want to touch that starter wire.
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Old 11-21-2010, 10:20 PM   #10
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I might as well as for any other useful tips since I've never done this before. Thanks for the additional feedback
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Old 11-21-2010, 11:38 PM   #11
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Don't forget to disconnect the electrical connections on the top of the transmission. The harness is bolted (10mm) on the bell-housing. I almost ripped mine out.

If the transmission is coming out too, don't forget to drain it.

This is probably the easiest EFI engine to pull... don't sweat it.
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Old 11-22-2010, 01:12 AM   #12
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Battery? What's that?
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Old 11-22-2010, 01:43 AM   #13
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Quote:
Originally Posted by Cococarbine3 View Post
If the transmission is coming out too, don't forget to drain it.
Indeed...

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Old 11-22-2010, 04:36 AM   #14
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Quote:
Originally Posted by dgmorr View Post
Hey guys,

I was disconnecting all the electronics in the engine bay required to pull the engine. I have the whole upper engine harness disconnected and most of the stuff under the IM.

I turned the ignition on to push the car back into the garage with steering. I noticed my fuel pump would not shut off when the key out and I was able to use the HVAC still. Is this normal? I don't know why I put the key in the run position.


your pump was running still because....

the AFM has a kill switch for the fuel pump built in to it so if the circit is open from it being disconnected the pump will not shut off. yes it dose not make sense but look at the wiring diagram that switch runs to a relay that is supposed to kill the pump.

Name:  miatawiringdiagram-1.png
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but you should disconect the battery befoer you start working on removing the engine..
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