Engine won't start after installing K&N Intake

[danhtx92]

So my mom bought me a new K&N Intake for my 94 4Runner and I installed it last night. After installation, the engine wouldn't start. It would crank, but it wouldn't actually start. I double checked everything making sure I left nothing loose or unplugged, but everything was where it was supposed to be.

Here is a list of things I have checked or done:

-Checked all fuses
-In the diagnostic test connecter, I place a wire between the fuel pump and the battery
-Double checked everything I touched or went near during installation.

Anybody have any ideas? Thanks for helping!:brick:

***Before installation engine started up and ran fine***

 

[flyinhawaiian01]

What engine?
How did you install it?

Did you mess with the MAF?
Did you disconnect the MAF?

Need a lot more info, and maybe a couple of photos too, before anyone can really say what's going on here. To me, sounds like the MAF is disconnected. Engine will not run without it.

 

[danhtx92]

What engine?
How did you install it?

Did you mess with the MAF?
Did you disconnect the MAF?

Need a lot more info, and maybe a couple of photos too, before anyone can really say what's going on here. To me, sounds like the MAF is disconnected. Engine will not run without it.

Sorry, I am a bit of a noob.

It is the V6 3.0
I installed it according to the directions from K&N.
I did disconnect the MAF, but reconnected it after installation.

Any other questions?
I will go take some pictures.

Thanks for your help man!

 

[danhtx92]

Could a bad MAF cause it not to start? I'm about 99% sure my MAF needed to be replaced before I installed the intake. I got poor gas mileage, poor idle (vibrations), and throttle hesitation.

 

[airdreams1]

pull the wire harness off the MAF & be sure you didnt bend any pins on the connector.
might pull the battery cable for a min then put it back on to re-set the computer.

 

[danhtx92]

pull the wire harness off the MAF & be sure you didnt bend any pins on the connector.
might pull the battery cable for a min then put it back on to re-set the computer.

I tried that, but everything looked ok.

My friend did accidentally unscrew the two screws on it that the wire harness plugs into. Could that have messed up the connection?

 

[KidVermicious]

Is it a MAF or an AFM? On the 22RE, the ECU will not trigger power to the fuel pump if it doesn't like what it sees from the AFM.

If it is a MAF, you should try cleaning it before you replace it.

 

[danhtx92]

Is it a MAF or an AFM? On the 22RE, the ECU will not trigger power to the fuel pump if it doesn't like what it sees from the AFM.

If it is a MAF, you should try cleaning it before you replace it.

It is a MAF, I just tried cleaning it, but no luck. I'm afraid that when my friend unscrewed the two little screws on it he messed it up. I have seen posts emphasizing the importance of not doing that.

 

[danhtx92]

Is it a MAF or an AFM? On the 22RE, the ECU will not trigger power to the fuel pump if it doesn't like what it sees from the AFM.

If it is a MAF, you should try cleaning it before you replace it.

Went and cleaned it again, did a much more thorough job and it did the trick! So frustrating, but glad that it is up and running again! Thanks for the help!layball:

 

[clunker]

It is possible that unscrewing those screws could have damaged something if you tried to pull on it. Pretty easy to check. The plastic cover on top of the VAFM (not MAF) assembly is held in by an adhesive (mine was resealed with silicone). Just carefully cut along the outside edge of the plastic and it will pop out with the help of a screwdriver. The circuit board should be sitting flat between some little positioning bumps, and the rotating assembly should rotate freely.