I have a 95 Mustang GT with 110k miles 5 speed, 2.73 gears, 295 rear tires, and only mods to the engine and exhaust are BBK cold air intake and off road pro chamber, and it has O2 sensors that are little less than a year old. Ever since I got the car my gas mileage has been about 170 or 175 miles to a tank is this normal? I don't beat on the car so I don't think it's because of that, but I do a lot of city driving.
Anyway a few weeks ago the car started acting up after I did a tune up with new cap, rotor, spark plugs and wires, and set the timing at 11 degrees. It started stumbling a little bit in lower RPMs and my gas mileage seemed to go down. To try and fix the problem I re gapped the plugs to .052, got a new TPS cleaned the MAF and the IAC, and even got a new distributor. While the car does run a little bit better the mileage seems to have dropped lower than my usual 175 a tank, and after a while driving the car seems to stumble a little bit in lower rpms.
I pulled codes the other day and got code 334 for the EGR voltage being too high at ignition on. So I tested the valve and applied vacuum to the valve while the motor idled and it stumbled and died so it was good. Then I replaced a bunch of vacuum lines under the hood and the one from the vac canister.
Before I go out and buy a new EGR valve sensor I was wondering how I could check the vacuum on the lines, specifically where to check vacuum at and what their readings should be?
Anyway a few weeks ago the car started acting up after I did a tune up with new cap, rotor, spark plugs and wires, and set the timing at 11 degrees. It started stumbling a little bit in lower RPMs and my gas mileage seemed to go down. To try and fix the problem I re gapped the plugs to .052, got a new TPS cleaned the MAF and the IAC, and even got a new distributor. While the car does run a little bit better the mileage seems to have dropped lower than my usual 175 a tank, and after a while driving the car seems to stumble a little bit in lower rpms.
I pulled codes the other day and got code 334 for the EGR voltage being too high at ignition on. So I tested the valve and applied vacuum to the valve while the motor idled and it stumbled and died so it was good. Then I replaced a bunch of vacuum lines under the hood and the one from the vac canister.
Before I go out and buy a new EGR valve sensor I was wondering how I could check the vacuum on the lines, specifically where to check vacuum at and what their readings should be?