92' 4.9 fuel system problems
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Junior User
Joined: Nov 2010
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From: IL
92' 4.9 fuel system problems
my truck keeps wanting to bog down when i hit the gas and it also has a large lack of power. ive been told that it could be my fuel pressure regulator, my fuel pump or my furl filter clogged. i changed my fuel filter and it didnt help. if it was my pump going out on me wouldnt it have gone out by now? its been doing this for 2 weeks and before it started hesitating it would have slow starts where i would have to turn on and off the key a few times to pressurize the fuel system. now it does both.
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Junior User
Joined: Nov 2010
Posts: 84
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From: IL
I just went ahead and bought a new fuel pressure regulator, i got it for 30 bucks off of ebay brand new. by the time i buy the 20 dollar gauge it just wasnt going to be worth it. thanks though
Fleet Owner
Joined: Aug 2005
Posts: 23,668
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From: Easton,Ks
I dough the fuel pressure regulator is bad unless you had fuel in the vacuum line to it.
You still need the gauge to see if anything is wrong with the fuel system.
Most of the time this problem is the TPS and you need to check it with a analog VOM.
But the TPS may not show up when you run the codes.
What you need to do first is see if you have any hard codes or any codes stored in CM.
If you do not know how to do this go to this link:
http://www.fordfuelinjection.com/?p=13
/
You still need the gauge to see if anything is wrong with the fuel system.
Most of the time this problem is the TPS and you need to check it with a analog VOM.
But the TPS may not show up when you run the codes.
What you need to do first is see if you have any hard codes or any codes stored in CM.
If you do not know how to do this go to this link:
http://www.fordfuelinjection.com/?p=13
/
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Junior User
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From: IL
well i did pull the vaccum line off of it and it had a really strong gas smell to it. i dont know if that would mean anything
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Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
Gas in the vacuum line to the FPR means you have a bad FPR.
The TPS mounted on the throttle body.
For more information on the TPS go to this link:
Ford Fuel Injection » Throttle Position Sensor (TPS)
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The TPS mounted on the throttle body.
For more information on the TPS go to this link:
Ford Fuel Injection » Throttle Position Sensor (TPS)
/
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