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Old 05-20-2017, 03:19 PM   #1
rictd
Scooby Newbie
 
Member#: 338626
Join Date: Nov 2012
Chapter/Region: E. Canada
Location: Halifax Canada
Vehicle:
2011 WRX
WRB

Default 2013 Forester Post-Swap Help

I recently swapped/installed a used FB25 long block in a 2013 Forester 2.5 Forester X M/T. It starts and idles reliably, but seems to idle a little low. On throttle it just bogs down, and eventually stall. It does not seem to want to rev at all yet does not throw any codes. I have verified visually that the throttle body is opening and closing.

The used long block that I found had 45000KM and came from 2012 Forester with an A/T and came complete with plugs, injectors, rails, intake manifold, throttle body, map sensor. I did change the flywheel

It is the first time that I swap a motor, but I am confident about having restored all vacuum/fuel/electrical connections. Oil changed and subaru super coolant replaced too.

If I pull the MAF sensor the car stalls and throws a code

Not sure what to check next guys, please give me some advice

PS - my original motor spun a rod bearing at 190000KM
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Old 05-24-2017, 03:33 AM   #2
Elbert Bass
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Member#: 283429
Join Date: May 2011
Chapter/Region: South East
Location: Down yonder.
Vehicle:
2016 Fuji Sunfire 03
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When you swapped the flex plate over to the flywheel did you get the crankshaft position plate (tone wheel) indexed properly on the crankshaft? It has a small pin to align it and is real easy to assemble it incorrectly.
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Old 06-04-2017, 08:57 AM   #3
rictd
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Join Date: Nov 2012
Chapter/Region: E. Canada
Location: Halifax Canada
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2011 WRX
WRB

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Quote:
Originally Posted by Elbert Bass View Post
When you swapped the flex plate over to the flywheel did you get the crankshaft position plate (tone wheel) indexed properly on the crankshaft? It has a small pin to align it and is real easy to assemble it incorrectly.
This.

This is exactly what the problem was

It is possible for the toning wheel/pin to become unaligned when placing and aligning the flywheel bolt holes

Do not rush this step - it cost me dearly
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