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fuel pressure

  1. 2001 Mustang Fuel Pressure Issues - 2000 rpm+ Fuel Pressure drops to zero

    4.6L Tech
    Hi All, The car would buck and stutter very intermittently over the last 5 years and would disappear before I could get it to a shop or get it up on jack stands but now the issue is constant. Hooked up a snap-on scanner and found no codes and nothing seemed out of the ordinary. So after...
  2. 306 Fuel pressure question

    5.0L Tech
    What should my cars fuel pressure be?it is a 306 with a tfs stage 1 cam, tfs twisted wedge aluminum heads, edelbrock performer rpm 2 intake, 255lph fuel pump, bbk adjustable fpr, 24lb injectors and a 75mm maf. The problem is when i first start the car it wont run by itself, i have to give it gas...
  3. Is a Fuel Pressure gauge necessary if I have a Wideband air/fuel?

    2005-2010 Mustang Talk
    So this wideband and supercharger stuff has cost me a lot more than I expected, Im trying to cut back in places where I can. I have a procharger on my 4.0. Im getting a wideband air fuel, and a boost/vacuum. Im deciding between getting an oil pressure gauge which is half the price of a fuel...
  4. 91 mustang a/f ratio starts ideal then shoots to rich

    5.0L Tech
    I purchased a 91 mustang 5.0. I have been having so many issues with it wish i didnt buy it. Anyway i keep getting code 41 and 91 so i bought a a/f ratio gauge to see what its doing. I hooked it to the passenger side o2. When i first start the car it sits on ideal but after 1 minute it spikes...
  5. 1990 Mustang GT

    This is my first time messing with anything like a turbo so I am a little lost. I just installed an on3 turbo on my 1990 mustang GT. Installed 255 fuel pump, 42# injectors, MAF calibrated for the injectors, super dynomax dual exhaust, 35 gap in spark plugs and will be putting in the tuning chip...
  6. Fuel Tank Pressure sensor is on 2001 Mustang

    4.6L Tech
    So my 2001 is throwing a P0453 code and I'm pretty sure it's a faulty Fuel Tank Pressure Sensor. Before I go dropping the tank can anyone tell me if the Fuel Tank Pressure Sensor is located on top of (outside) the gas tank or inside the tank as part of the fuel pump assembly? Are there...
  7. Excessive Fuel Pressure

    4.6L Tech
    I have a 2004 mustang GT with a Kenne Bell supercharger and several other mods including a boot a pump. The car has about 40k mi and has been well taken care of. I suddenly have a problem with excessive fuel pressure. The fuel pressure increases with engine temp. Normally runs 32 psi and...
  8. 1987 Mustang bogging down

    5.0L Tech
    I have an 87 mustang gt, has bbk shortys and h pipe, 3.73s, converted to mass air. It idles fine and will run smooth if I baby it but if I try to open it up any then it will bog down real bad, my mass air conversion was just fine for about a month, so I don't think that would be it, I checked...
  9. Possible Timing, Cam, Engine Block, Balancer, Fuel Pressure Issue

    5.0L Tech
    Hey there, can't quite establish whether or not I have a problem or this is normal, therefore looking for help/advice. First the setup then the problem below: Stock 93 302 Engine Block F303 Cam Ported GT40 Heads (not p heads) MSD Ignition Double Roller Timing Cam Roller 1.7 rockers new...
  10. mild-mod 1993 Mustang LX fuel pressure issues

    5.0L Tech
    Hey everyone, thanks for reading. Having trouble maintaining fuel pressure in my mild mod mustang. When I turn the key on, the fuel pressure gauge goes to 38lbs then dies down to 0. when I crank the engine the fuel pressure gauge flickers in between 0-10 lbs and cranks for about 5-10 seconds...
  11. converting my 95 v6 to 302 carb fuel pressure question

    5.0L Tech
    sooo im planing on using my stock fuel pump from the car i just need to know what i need to regulate the pressure down to i have a fully built 302 holley 600cfm carb the current pressure sits at around 32 i know that way too much but not sure where it need to be
  12. still have idle issues, any help is appreciative

    5.0L Tech
    ok so I fixed my gas leak, now it is still ideling a little low and acts as if its gonna stall and sometimes does. Should I try the fuel pressure regulator or idle air control guys??? Vaccume leak maybe? its stressin me the hell out
  13. fuel pressure with E303 cam.

    5.0L Tech
    Hey, My cars been running a little rich latly, for example I only got 180 kilometers to a tank. I checked my fuel pressure and im getting 45psi with the vacuum line off. With the vacuum line on im getting 40 psi. I think this is a little high but want to get a little input.
  14. 01 3.8 engine revs uncontrollably

    V6 Tech
    I searched all over this forum and found some great tips but no straight answer so please help me. My 2001 v6 stang has 108k on the clock and when in neutral the engine has started to rev all by itself. It happens all the time and is all over the tach range. Sometimes its just a high idle...
  15. 1993 Mustang GT Fuel delivery problems

    5.0L Tech
    The car: 1993 GT 5-speed, mostly stock. Some typical bolt-ons: cold air intake, exhaust, pulleys, etc. The only major upgrade is a cam. Backstory (skip if impatient): Bought the car about a year ago. After a couple months, fuel pump went out. I replaced the pump, but not sock/strainer in...
  16. Really need help from mustang enthusiasts!

    5.0L Tech
    Alright...well the saga continues. I posted previously about possible distributor problems with my 88 GT causing it to bog and sputter when I "get on it." Turns out my distributor was of a full rotation. So I had that fixed. did not solve the problem. I just had a mechanic...
  17. I need help..please(fuel problems)

    5.0L Tech
    I'm new to Ford. I just bought my 1988 Mustang 5.0 (speed density) about a month ago. I am now have problems with it. It starts easy but when i shift into first and get about 2000 RPM it starts to bog down. I have to keep under 2000 rpm through all gears to keep it from blogging down and shuting...