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Resolved 2G 98 GSX Fuel Pressure Solenoid

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MasterMatt209

Proven Member
473
30
Jan 17, 2015
Danville, Indiana
Hey guys I just had a new muffler put on my car and right after it was put on and I started it it sounded kinda weird I noticed my check engine light came on too, on the way home I got it checked and it came up as P1105 Fuel Pressure Solenoid. Can anyone help me figure out what's wrong and how to check?
 
Solution
Why do you think it's so hard to find?

Going to auto zone or the dealer should be a good place to find one. If you remove it, you will have a check engine that will not pass emissions unless you can turn it off using software.

http://s42.photobucket.com/user/u_jmastera/media/FPS.jpg.html
This is a picture of where and what the solenoid is.

MD113721 is the part number and this ebay vendor claims to be a warehouse owner. Check this link if you need to get one asap.

http://www.ebay.com/itm/MITSUBISHI-MD113721-GENUINE-OEM-SOLENOID-VALVE-/171599879642
There are a lot of posts about that code. Good luck finding that part, as it's nigh impossible. I had that code, too. It went away after I changed my oil and unhooked the battery for 15 seconds.
 
Reset your ECU by pulling the fuse, if the problem persists then I would say it's time for an aftermarket fpr as the OEM ones (like the poster above me said) are never impossible to find in working condition.
 
Reset your ECU by pulling the fuse, if the problem persists then I would say it's time for an aftermarket fpr as the OEM ones (like the poster above me said) are never impossible to find in working condition.
Okay I will do that for sure, can you post a good one up for me so I can see what I should buy? Also whete Is it located? Thanks
 
Its located on the far right on the firewall, odds are the code won't go away, its nothing to worry about as it dumps extra fuel on cold or is it warm start, anyways its not needed, just an annoyance.
 
Why do you think it's so hard to find?

Going to auto zone or the dealer should be a good place to find one. If you remove it, you will have a check engine that will not pass emissions unless you can turn it off using software.

http://s42.photobucket.com/user/u_jmastera/media/FPS.jpg.html
This is a picture of where and what the solenoid is.

MD113721 is the part number and this ebay vendor claims to be a warehouse owner. Check this link if you need to get one asap.

http://www.ebay.com/itm/MITSUBISHI-MD113721-GENUINE-OEM-SOLENOID-VALVE-/171599879642
 
Last edited:
Solution
if the problem persists then I would say it's time for an aftermarket fpr

The code doesn't mean that your fpr bad its the FPR solenoid on the firewall. The FPR solenoid raises the fuel pressure a little on hot starts but its not really necessary. If you are getting the code make sure the solenoid is plugged in and check all the vacuum lines and reset the code and see if it comes back. If it comes back you can try to bypass it and connect the vacuum line from the manifold directly to the fpr and loop the lines on the solenoid (I have been successful in getting rid of the code by doing this) or it can be turned of in ecmlink if you have it otherwise you will need to replace the solenoid.
 
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