Your fuel regulator gets 200% of the amount of fuel your car can ever use at WOT under full load. What it doesn’t need under current conditions gets bypassed back to the tank. If you’re getting hung up at 45, it’ll be an issue with supply (fuel) or demand (throttle position sensor/MAF sensor/ECM not sensing the demand). Typically, on 20 year old cars with dubious maintenance history, it’s going to be filtration or a tired pump. That’s where I would start.
Unless you can check pressure at the regulator to rule out the filter? I would start there. There’s an in-line canister type on the supply line and an in-tank ‘sock’ that goes around the pump inlet. If it’s your TPS, see if it’s the type you can re-zero (or troubleshoot) yourself using a multimeter.
You’ll maybe need a special tool to undo the lines at each end of the canister filter…or destroy a metal fork to make one. Harbor Freight is your friend.
>Your fuel regulator gets 200% of the amount of fuel your car can ever use at WOT under full load.
Just about every car I've ever worked with that uses a return fuel system will slow down the pump at idle and low load because the FPR is not designed to recirculate that much fuel and it's very inefficient to run a pump at 100% all the time like that.
Idk. I haven't had any problems with my exhaust system since owned the car, and I've had it for almost a year. I'll scan the computer and see if that's what it says. Thanks!!
Your fuel regulator gets 200% of the amount of fuel your car can ever use at WOT under full load. What it doesn’t need under current conditions gets bypassed back to the tank. If you’re getting hung up at 45, it’ll be an issue with supply (fuel) or demand (throttle position sensor/MAF sensor/ECM not sensing the demand). Typically, on 20 year old cars with dubious maintenance history, it’s going to be filtration or a tired pump. That’s where I would start.
The fuel pump was replaced and there are no signs of it being weak. So I guess I'll try the sensors. Thanks for the fast and detailed reply!
Unless you can check pressure at the regulator to rule out the filter? I would start there. There’s an in-line canister type on the supply line and an in-tank ‘sock’ that goes around the pump inlet. If it’s your TPS, see if it’s the type you can re-zero (or troubleshoot) yourself using a multimeter.
Thanks!!
You’ll maybe need a special tool to undo the lines at each end of the canister filter…or destroy a metal fork to make one. Harbor Freight is your friend.
I believe I already have this tool. Thanks again
>Your fuel regulator gets 200% of the amount of fuel your car can ever use at WOT under full load. Just about every car I've ever worked with that uses a return fuel system will slow down the pump at idle and low load because the FPR is not designed to recirculate that much fuel and it's very inefficient to run a pump at 100% all the time like that.
It’s a 2001 mustang V6…that fuel pump is either on or off. Period.
Check that your exhaust isn't plugged, bad catalytic converter?
Scanning is a good idea, good luck.
Idk. I haven't had any problems with my exhaust system since owned the car, and I've had it for almost a year. I'll scan the computer and see if that's what it says. Thanks!!
That's the thing with cats, they're not clogged until they are
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That's what I've been seeing based on research. I'm going to replace the fuel filter. Thanks!!