swiftfox90

whenever my car gets a load on it, it starts to surge and buck like its starving for fuel or something but its getting really bad and i can jsut about make it up my hill cant even make to a shop unless beating the living hell out it any ideas what can cause this surging problums my fuel psi guage is only like 32 psi and it dips down when i hit the gas then climbs back up the fuel pump primes and sounds pretty healty the car has a 24lbs inj. adj fuel psi reg. and 255 in tank biggest mods to the car is the e cam and gt-40 heads comp. was never changed or anything btw car has a good idle its only off idle its all mess up any help will be great thanks guys

samseed101

How's the vacuum at idle and when accelerating hard? Of course a LOT of things can cause surging problems but that's usually one of the first things I check. Cheap fix

MADMAC

Simple stuff first, clean MAF with carb cleaner, if your are using an air filter similar to the K&N types it has oil on it and can transfer to you MAF element. Next, replace your fuel filter. Check all of your plug wires and plugs. This simple stuff can cause surge problems under load.

mjr46

check for vaccum leaks and or run a koeo/koer test and see if there are any codes

swiftfox90

well thats a good idea with the fuel filter i dont think it has ever been changed ever so ill start there and ill look around for vacumm lines off also i wish i had a computer so i can look up codes haha so ill def check out those simple things first on saterday when im off of work lets cross our fingers for some good weather i want to start driving her angain i just put a new exhuast on it sounds soo nice and got my cobras back on her ahh man i just want to take her to the track haha

MADMAC

I have had problems in the past with a bad fuel filter. I also have an external 255 fuelpump that I run piggy back with a cut out switch and relay. If I don't bump over to the right position on a vain it starves for fuel under load just running the internal pump. Let us know what you find. MAC

mjr46

if your efi you have a ecm that control and monitors engine driveability....ford eec iv codes and descriptions are all over the net...do you even know what a koeo/koer test is and how to perform one??[&:]

Joel5.0

You don't need a computer to run the self tests ..... DIY KOEO/KOER/Cylinder Balance Self-Test

swiftfox90

yeahhi know how to do all of that i just started being a tech at a local ford dealer haha but it wasnt any of that it was just a bad fuel filter kinda what i thought it was the whole time but now shes all good and ready to wake up the neighberhood hahaha sorry took so long guys i had no time last weekend so i jsut did it this past weekend thanks for all the help now its time for a bath for her soo dirtyy... haha