P1450
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P1450
just wondering if anyone has had any experience with a P1450 code on a 04 ranger 4.0 liter, automatic, not a whole lot if info out there so i thought i would chime in, it says unable to bleed up fuel tank vaccum. i dont think its the gas cap and looks like the tank pressure sensor is a dealer item, thanks
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Ran a search and found the following:
That is an evap emmissions code - wont release vac here is fords description
P1450 - Unable to Bleed Up Fuel Tank Vacuum Monitors the fuel vapor vacuum and pressure in the fuel tank. The system failure occurs when the EVAP running loss monitor detects excessive fuel
tank vacuum with the engine running (but not at idle). Blockages or kinks in EVAP canister tube or EVAP canister purge outlet tube (between fuel tank, EVAP canister purge valve and EVAP canister)
Fuel filler cap stuck closed (no vacuum relief)
Contaminated fuel vapor elbow on EVAP canister
Restricted EVAP canister
CV solenoid stuck open (partially or fully)
Plugged CV solenoid filter
EVAP canister purge valve stuck open
VREF circuit open (harness near FTP sensor, FTP sensor or PCM)
Damaged FTP sensor
THat being said I would ck the canister vent solenoid and hose[attached to evap canister] for an obstruction. you should be able to blow through the valve and hose freely.
That is an evap emmissions code - wont release vac here is fords description
P1450 - Unable to Bleed Up Fuel Tank Vacuum Monitors the fuel vapor vacuum and pressure in the fuel tank. The system failure occurs when the EVAP running loss monitor detects excessive fuel
tank vacuum with the engine running (but not at idle). Blockages or kinks in EVAP canister tube or EVAP canister purge outlet tube (between fuel tank, EVAP canister purge valve and EVAP canister) Fuel filler cap stuck closed (no vacuum relief)
Contaminated fuel vapor elbow on EVAP canister
Restricted EVAP canister
CV solenoid stuck open (partially or fully)
Plugged CV solenoid filter
EVAP canister purge valve stuck open
VREF circuit open (harness near FTP sensor, FTP sensor or PCM)
Damaged FTP sensor
THat being said I would ck the canister vent solenoid and hose[attached to evap canister] for an obstruction. you should be able to blow through the valve and hose freely.
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From: SW Va
Nice detailed DTC info post 03 Maz B23.
Purge valve & gas cap problems have been posted about, so they belong high up on your suspect list.
If its wanting to stall after a 30 min/15-20 mile drive, suspect the gas cap, so pull over & loosen it to relieve the tank vacuum & see if engine power goes back up. If so, replace the gas cap. If no joy, look to a stuck open purge valve, maybe try thumping it to see if it'll wake up & function. Let us know how your trouble shoot goes.
Purge valve & gas cap problems have been posted about, so they belong high up on your suspect list.
If its wanting to stall after a 30 min/15-20 mile drive, suspect the gas cap, so pull over & loosen it to relieve the tank vacuum & see if engine power goes back up. If so, replace the gas cap. If no joy, look to a stuck open purge valve, maybe try thumping it to see if it'll wake up & function. Let us know how your trouble shoot goes.
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Nice detailed DTC info post 03 Maz B23.
Purge valve & gas cap problems have been posted about, so they belong high up on your suspect list.
If its wanting to stall after a 30 min/15-20 mile drive, suspect the gas cap, so pull over & loosen it to relieve the tank vacuum & see if engine power goes back up. If so, replace the gas cap. If no joy, look to a stuck open purge valve, maybe try thumping it to see if it'll wake up & function. Let us know how your trouble shoot goes.
Purge valve & gas cap problems have been posted about, so they belong high up on your suspect list.
If its wanting to stall after a 30 min/15-20 mile drive, suspect the gas cap, so pull over & loosen it to relieve the tank vacuum & see if engine power goes back up. If so, replace the gas cap. If no joy, look to a stuck open purge valve, maybe try thumping it to see if it'll wake up & function. Let us know how your trouble shoot goes.
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just an update, the live data scanner I borrowed did not pull up the pressure sensor but the intake and engine temps were normal, bad thing is new pressure sensor from Ford is 200 bucks and comes as an assembly with lines attached to it so the tank and canister need to be lowered in order to get at the lines. (or remove the bed) I have one more test to do and that is I should have a 5 volt referance wire going from the PCM into the sensor and should have 2.625 volt signal going back to the PCM, that will tell me if the sensor it reading right at atmospheric pressure, or could be no power or bad ground witch will throw a P 1450 also,, more to come
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From: SW Va
Good trouble shooting idea to do voltage & ground checks on the vapor recovery system. Grounds are a common problem.
If you haved to remove things, members that have done it, say sliding the bed back to get at the fuel pump, is way easier & less complicated than dropping the tank. Unkook the tank fill tube, & rear taillight wiring harness, remove the tailgate to make it lighter, remove bed bolts & slide the bed back to rest on some saw horses & the rear tires.
Will be interesting to hear how your trouble shoot goes.
If you haved to remove things, members that have done it, say sliding the bed back to get at the fuel pump, is way easier & less complicated than dropping the tank. Unkook the tank fill tube, & rear taillight wiring harness, remove the tailgate to make it lighter, remove bed bolts & slide the bed back to rest on some saw horses & the rear tires.
Will be interesting to hear how your trouble shoot goes.
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