So i have had this ongoing problem and its only getting worse. first i thought i got some bad gas but it appears i couldnt have gotten bad gas 4 times now. but my problem is in first gear the car revs fine all the the way 6k. but when i shift into second at about 3500 the car hesitates,skips and pops a bit through the exhaust and does it in third also and just wont rev. havent gotten to try forth or fifth due to speed. but at a sit with the car in neutral revs fine. I checked fuel, spark plugs and wires. all recently in last 5k have been changed. Any hints from someone would help. cuz im kinda baffled. :BangHead:
Having problems with the car
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duff daddy
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Check and make sure plugs and wires are on the correct order, make sure all your vaccume lines are secure and correct. Also are you getting a check engine light on? Im assuming the car is a stick. If its an auto you maybe have an issue there.
Weak fuel pump would be my guess. The higher the gear the more load and the fuel pump probably just isn't keeping up.
Get a gauge on there that you can rig up to see while you drive and you will most likely see fuel pressure dropping off at higher loads.
Other than that I'd say a bad wire would cause similar problems don't assume they are good just because they are new.
Get a gauge on there that you can rig up to see while you drive and you will most likely see fuel pressure dropping off at higher loads.
Other than that I'd say a bad wire would cause similar problems don't assume they are good just because they are new.
fuel fitler is not that old maybe a year and the car used to sit or weeks. Im gonna try and replace the filter tom. while im at the shop. ill let u know if that changes anything. and i put a another brand new set off wires on it 2day and it didnt changes it.
reivaxtorres
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sounds like a misfire.....does it do it all the time or only after the car has warmed up a bit/only when the car is cold?
reivaxtorres
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well no, if it was a misfire it wouldnt always give you a check engine light. i drove my car for about a week with coolant filling up the #4, #3, and part of the #2 spark plugs and then it finally gave me a misfire code. lol
as for doing it in 1st gear, yes, it would still have to do it in first gear, but its not always noticeable in first. 1st gear is usually geared agressively, so its very possible to over-look a misfire at WOT
as for doing it in 1st gear, yes, it would still have to do it in first gear, but its not always noticeable in first. 1st gear is usually geared agressively, so its very possible to over-look a misfire at WOT
riored96gt
Active Member
Mine was doing the same thing. One of the coils was cracked in 4 places! Much better now...
a misfire doesnt ALWAYS happen in every gear. a coil or wire set starting to go bad sometimes only rares its head under load. obviously the load in 1st gear is lesser than the others. however, a good way to check is chock all 4 wheels, pull the parking brake and slip the clutch just enough to put a load on the motor and see if you can induce the misfire. or get rolling in first and ride the clutch and gas to load the motor.
for instance when my fuel pump was starting to go out my car would pull to redline in first at WOT and not miss a beat, but any other gear and more than 75% throttle would cause it to backfire through the intake and fall on its face. eventually it got bad enough that i couldnt go more than 50% throttle in any gear, and it was obvious when i put the gauge on it and went for a spin that the pump was trash because pressure would drop to nothing at throttle stabs.
for instance when my fuel pump was starting to go out my car would pull to redline in first at WOT and not miss a beat, but any other gear and more than 75% throttle would cause it to backfire through the intake and fall on its face. eventually it got bad enough that i couldnt go more than 50% throttle in any gear, and it was obvious when i put the gauge on it and went for a spin that the pump was trash because pressure would drop to nothing at throttle stabs.
aight yeah that makes sense. i put those new wires on it, new plugs and have changed the fuel filter. It seemed to do better for a bit but yeah when in first the car is all there everything its got but as soon as i shift and push WOT again it still stutters, hesitates and pops in the exhaust. but if i push the throttle slowly it doesnt do it as bad and waits till about 4500 till it acts up. So i guess i need to maybe grab some coils and if that doesnt work a fuel pump. but i checked all cylinders and no wetness or residue at all. this thing has just got me baffled. I guess i just gotta keep throwing parts at it.
I'm still leaning toward a fuel pump from the sound of it.
If you stay in the gas when it happens and it throws a lean code you know that's the problem is the pump. I would grab a fuel pressure tester and go for a ride.
A coil would be more likely if you short shift to say 5th gear and go WOT and get an instant misfire.
If you stay in the gas when it happens and it throws a lean code you know that's the problem is the pump. I would grab a fuel pressure tester and go for a ride.
A coil would be more likely if you short shift to say 5th gear and go WOT and get an instant misfire.
its gotta be fuel pump. i put aanother set of packs on it 2day off my buddies car. which has no issues and the problem still occurs. so im gonna have to put a pump in it. ill try to get a gauge within the next couple of days.
30psi at idle with vacuum still hooked to regulator, 38-40 at idle with vacuum disconected and plugged.
you need to connect the gauge and route it under the wipers or tape it to the windshield and watch it while driving to see if it drops off when you load the motor.
mine was perfectly in spec until wide open throttle in gear.
you need to connect the gauge and route it under the wipers or tape it to the windshield and watch it while driving to see if it drops off when you load the motor.
mine was perfectly in spec until wide open throttle in gear.
sorry to bring back a dinsoaur thread but i still need help. i still have the same problem. brand new fuel pump, wires, plugs and fuel filter. still having a stutter and hesitation at @2k rpm and car wont climb in rpms. could it be a computer problem? this car is being a pain in the butt. and its my daily driver so i need to get it done quick and i dont wanna risk blowing it up.
duff daddy
Legend
Take it to a ford dealer and have them Diag the issue which is going on, it prob would have been cheaper just to have them do it instead of you replaceing all these parts.
Could be an 02 sensor but who knows... sounds like a dealer isssue
Could be an 02 sensor but who knows... sounds like a dealer isssue
I had the same issue and here is what was concluded.. first off i had a 90mm lightning maf that was ruined when meth leaked down into it so i had to replace it with a true blow-thru maf (F/I) and also i was getting this issue because my intake manifold gasket was going out and fluid was leaking into the spark plug holes... i'd recommend taking out all of the plugs and checking inside the holes to make sure no fluids have gotten into them
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