MAP sensor
1st Gear
Joined: Apr 2026
Posts: 5
Likes: 2
From: ozarks
hey hello I have an intermittent issue somewhat similar in context... '05 fxdwgi 69k miles. dies on deceleration! starts up after cycling ignition switch. first thought fuel psi, haven't checked yet, second thought MAP sensor. No Codes. connections look ok. never checked fuel psi on HD before? thanks in advance
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Cruiser
Joined: Aug 2012
Posts: 130
Likes: 26
From: West Michigan
hey hello I have an intermittent issue somewhat similar in context... '05 fxdwgi 69k miles. dies on deceleration! starts up after cycling ignition switch. first thought fuel psi, haven't checked yet, second thought MAP sensor. No Codes. connections look ok. never checked fuel psi on HD before? thanks in advance
Stellar HDF Member
Joined: Sep 2021
Posts: 2,014
Likes: 1,467
From: Black Hills of SD
To check the fuel pressure, you are going to need an inline fitting for the male QD on the fuel tank. That then mates to the fuel line female QD. Or a fitting to do the same at the fuel rail QD. There are kits that can be purchased pretty reasonably [ eBay ] to do either method. But essentially you have to tap into the fuel line.
I tried the O'Rielly's auto parts to see if they had a loaner fuel pressure kit, which they do, but it did not have the fittings for the HD QD's. But you might try some of the auto places you have and see what they have.
I tried the O'Rielly's auto parts to see if they had a loaner fuel pressure kit, which they do, but it did not have the fittings for the HD QD's. But you might try some of the auto places you have and see what they have.
Seasoned HDF Member
Joined: Mar 2021
Posts: 18,252
Likes: 3,679
From: backwoods
It starts once you cycle power makes me wonder something intermittent coil that stalls maybe when coasting or slow speed?
Cpk is another possibility. It's 20 years sold I would not be afraid to throw parts at it, then you got new parts.
They may pass test now, but have intermittent issues.
I am assuming screen and lights stay on.
Cpk is another possibility. It's 20 years sold I would not be afraid to throw parts at it, then you got new parts.
They may pass test now, but have intermittent issues.
I am assuming screen and lights stay on.
1st Gear
Joined: Apr 2026
Posts: 5
Likes: 2
From: ozarks
hey thanks for responding. i didn't get any notification.
my first (probably LAST) fuelie... reason being COST (tools, equipment, learning)
so I've been looking thru the manual, EFI tests, flow charts.... able to check fuel pump and relay volts and continuity, found the fuel vent/check valve hose was deteriorated!
temp replacement, rode around the block.... further riding testing today. crossing my fingers ..
my first (probably LAST) fuelie... reason being COST (tools, equipment, learning)
so I've been looking thru the manual, EFI tests, flow charts.... able to check fuel pump and relay volts and continuity, found the fuel vent/check valve hose was deteriorated!
temp replacement, rode around the block.... further riding testing today. crossing my fingers ..
1st Gear
Joined: Apr 2026
Posts: 5
Likes: 2
From: ozarks
so not getting much help here, fyi, the problem turns out to be fuel pump related.. the sock on bottom of pump was deteriorated laying in pieces in tank, probably from ethanol blend fuel.
also codes for crank sensor and map sensor tripped. cleared. the fuel filter was packed full of muck, surprised it even ran. tank is new from previous owner but obviously the inners are used. cleaned everything best i could; tank, filter, map sensor, temp reassembled to verify no other sensor issues. parts ordered. running good again. injector cleaner and non ethanol fuel, putting on miles until parts arrive.. fuelies are great when everything works proper.. still considering carb!
hope the info helps someone else
also codes for crank sensor and map sensor tripped. cleared. the fuel filter was packed full of muck, surprised it even ran. tank is new from previous owner but obviously the inners are used. cleaned everything best i could; tank, filter, map sensor, temp reassembled to verify no other sensor issues. parts ordered. running good again. injector cleaner and non ethanol fuel, putting on miles until parts arrive.. fuelies are great when everything works proper.. still considering carb!
hope the info helps someone else
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