I changed the fuel pump and filter but I'm still getting hesitation around 30 to 40 mph. Could it be my injectors?
I changed the fuel pump and filter but I'm still getting hesitation around 30 to 40 mph. Could it be my injectors?
Have you checked your plugs/coils? Could be bad coils.
2003 MM 300A
#734 of 7,093 BLK
Build date: 6/6/2002
Adopted: 10/27/2014
K&N CIA, J-Mod, 4.10s 31 spline, Lowered
Mo's tune & Stainless Works Headers Flomaster 40's
Did you attempt any kind of problem determination before changing parts?
“When you can’t make them see the light, make them feel the heat.”
Ronald Regan
"The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
Lt. Colonel Ralph Peters
“Be polite, be professional, but have a plan to kill everybody you meet.”
"I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
General James Mattis
dirty mass air flow sensor
Mass air flow new, plugs new how do I check coils?
Unless you have an oscilloscope to check the pattern the easiest way is to swap them out with good known coils. No misfire codes?
2003 MM 300A
#734 of 7,093 BLK
Build date: 6/6/2002
Adopted: 10/27/2014
K&N CIA, J-Mod, 4.10s 31 spline, Lowered
Mo's tune & Stainless Works Headers Flomaster 40's
If one coil is bad, change them all... Save yourself a headache later.
Righteous Indignation
03 300A
4055 of 7838
4054 of 7093 in Black.
Born 8/23/02
Adopted in 1/15
SOLD
You need a tune! I felt the same thing when I bought mine, and when I got a tune from Mo it disappeared.
Buying things I don't need, with money I don't have, to impress people I don't know!!!
Production #1489 of 3213/#516 of 997
Good Lookn champ any suggestions on a good shop to have it tuned and serviced in or near Dallas
Look under "Forums" here. Go down to Supporting Vendors, n you'll see, "Mo's Speed Shop." If you have a hand held unit, (SCT) he could send a tune to your email, and you could just download it to your unit. If not, he could set you up w a tuner, n tune. I got mine from him, as well as many other members. He's good people!
Buying things I don't need, with money I don't have, to impress people I don't know!!!
Production #1489 of 3213/#516 of 997
Yes, ^^^ Mo's is good but get it running right before you put a tune in it.
Tips: Clean throttle body and upper intake use Seafoam, blast it. Clean IAC, and your TPS they are on the throttle body. Airfilter is new too I assume. If you have 10+ year old COPS id say it's time for a new set. How many miles?
If you only feel a buck/stumble at light throttle at 30-40 it could also be your EGR/DPFE sensor or transmission - possible but less likely.
2021 F150 XLT Super Crew short bed - no chrome! - 3.5 Ecoboost 400hp/500tq - 36 Gal tank (600 miles) - 4x4 FX4 Offroad + Max Tow - 3.55 Locker - 10 Speed - Pro Power 2kva - 24mpg @ 80 Ford is still the best.
03 300A - Number 1727 - Super Touring - 10k in the best upgrades - 13.8@99 N/A - SOLD - STAP was so much fun, loved meeting you all and racing.
Buying things I don't need, with money I don't have, to impress people I don't know!!!
Production #1489 of 3213/#516 of 997
Will do good Lookn fellas! Just tryna get her right!
Ok fellas I can't figure out how the water is getting in the passenger side rear of my car when it rains. Any ideas of how this is happening??
Changed the thread title to more accurately reflect the OP's issue.
The Blackbird
Trilogy #61
Driveway Queen
The Spruce Goose
2004 Grand Marquis LS Limited Edition
Daily Driver
There are currently 1 users browsing this thread. (0 members and 1 guests)