odd ka24de problem.

[destroyyourmind]

so my 91 hatch has some odd problems going on its a 95 ka. so I pressure washed my engine bay, repaint, polished and put all steel braided fuel lines. at first my car had kind of a fuel cut and didn't want to start at all it would start if I put fuel in the intake. then sometimes it would start immediately under throttle at about 4000rpm it has a fuel cut and just bucks and dies. the throttle response is good sometimes but I'm backfiring pretty bad and if I sit still and rev at 1500-3000rpm its like an odd noise its bombumbomboom its hard to explain hahah. I checked my tps it checked out good, my fuel pump has power but I haven't heard it prime when I turn the key to on in a while. I have 40-45psi fuel pressure at idle and under throttle I don't understand why its doing this I replaced the fuel filter and it ran good for 3 days or so then it did it again I noticed my coolant temp sensor came unplugged plugged it back up reset and replaced the ecu eventually. pulled codes and I got the everythings ok code55. my distributor had a little water pulled it apart cleaned and let the cas dry and the car ran good again then messed up a few days later.

[destroyyourmind]

bump because I'm tired of driving this lame mustang. neeeed tha 240 back, gonna swap the fuel pump and probably order a megan fuel pressure regulator.

[Wc240]

FPR wont solve your problem. before you buy one, you could atleast test your current one.check your timing and your secondary ignition first. also check your egr to see if its failing and check for vacuum leaks. start with the basics before just throwing parts at it

[jetroy240]

Many possibilities, how's the dizzy cap & rotor? could be spark plug wires, or cat. converter or muffler restricted, or spark plugs, a bad egr system , engine will only hesitate & CEL may come on but it will not die, so u can rule out egr, could be ignition coil too, check the transmission switches probably shorted wiring( I've seen a shorted one & it cut-out at 4000 rpm.

[liquid_cool]

check your maf plug man..if that thing wiggles..it will make your engine cut in and out...same with the TPS..if it even moves a little it would do that....if it is not those 2 ..then try (if your topfed) wiring the injectors to the rail..and pop the rail off..have a buddy crank it over..see if there flooding out on ya...let us know what ya find.

[xavi_sir]

wet spark plugs?

[Wc240]

Many possibilities, how's the dizzy cap & rotor? could be spark plug wires, or cat. converter or muffler restricted, or spark plugs, a bad egr system , engine will only hesitate & CEL may come on but it will not die, so u can rule out egr, could be ignition coil too, check the transmission switches probably shorted wiring( I've seen a shorted one & it cut-out at 4000 rpm.

just becouse it doesnt die doesnt rule out the egr

[jetroy240]

Probably erased the old codes there, try to check for codes again after many times of encountering the symptoms again, on 91 models codes will be erased when the diagnostic mode is changed from mode II to mode I or if battery terminal is disconnected within 24 hours, unless it has a hard fault code .

[destroyyourmind]

I have all the egr blocked off checked my old regulator and tps they both checked out great. the maf sensor does wiggle though. i have a msd ingition my car starts right up sometimes then won't start at all. I think it could be my crank angle sensor because water got in my dizzy my I took it apart and let it dry out and the car ran great for like 3 days then ran like complete s***. this motor has all new seals gaskets hoses on EVERYTHING, including the fire wall lines. I sprayed ether all over the intake to find the leak and there wasn't one I highly doubt its vaccumn it seems to act more like a fuel/ sensor problem. the car acts like it is out of time when I hold the gas down but the motor is 100% for sure in time it runs great at idle when I rev it bogs then runs like s*** completley

[jetroy240]

Try to remove the MSD ignition put it back to stock ignition just to isolate it, watch-out for your cap & rotor , they wear-out easy w/ MSD ignition, make sure they are not corroded, specially the ignition coil side, are u using stock spark plug wires? Check the ignition coil wire, just swap a known good one to check it. Check your codes again, go to mode II only. Good luck.

[destroyyourmind]

haha appreciate it I've never had a problem this crazy before I'm swapping fuel pump for a walbro sometime this week my fuel pressure is 40 at idle and 43psi wide open throttle that sounds kind of high but it still doesn't explain why it sounds like the timing is off under load I've tested pretty much everything. gonna swap the CAS this week too

[destroyyourmind]

cleaned cas sensor, have had the funds to swap the fuel pump in but I put the old one in it to play with it and I never hear it prime I released all the fuel pressure and I didn't hear it kick on the car didnt want to start it would fire over like every 2 seconds but it would die before it starts then it started finally ran s***ty sounding like a old truck then ran fine for a minute when I press the throttle it sputters and dies and sometimes revs. about to make sure its grounded good on the back of the head I'm pretty sure it is though. sound like fuel pump to you guys?

[destroyyourmind]

takes a minute or so to start under throttle it dies like its out of gas if I slowly hit the gas and build up the rpm's I can rev all the way to the rev limiter. it sputters at idle the idles and sounds great then sputters randomly no idea coolant temp tested fine tps did also. if I unplug either they car just idles way higher. if I unplug the maf it sounds like its running way better.

[destroyyourmind]

ok car is drivable put the new coolant temp in and fuel pump but its still running kind of wierd its got alot of hesitation under load it doesn't backfire or buck it just seems really slow. when I start the car it runs like s*** then goes to 1500 on its own and goes to idle and runs smooth seems like its still running rich.

[destroyyourmind]

anybody think its the crank angle sensor mine got wet after pressure washing the motor and the sensor is real faded looking. the problems seem to point to that also I have another I gotta pick up today I'lll try that and see how it works out.

[destroyyourmind]

new crank angle sensor still doing the same thing, starting up and running like s*** then running good but the motor is still pretty slow under throttle

[driftneil]

Sounds like water on the ignition system somewhere........Make sure the plug holes are dry, its done it to me many times.

[jetroy240]

check also ur fuel, might be contaminated w/ water, remove ur fuel filter & pour the contents to a clear container to check if it's contaminated.

[destroyyourmind]

yeh I pressure washed the motor and it hasn;t really been right since I got it running after It died on me the other day I had pressure washed the motor probably a week before this s*** started happening

[Wc240]

probably got water in the distributor cap. pull it off and wipe it clean. a LIGHT spray of wd40 wouldnt be a bad idea. when washing the motor, its a good idea to wrap the dist. in a plastic bag

[destroyyourmind]

haha yeh I didn't think water would get in there but I've cleaned it and swapped the crank angle sensor while I was in there right now it sputters under throttle if I gun but if I hit the gas slowly it doesn't sputter when I rev it seems like it takes kind of long for the rpms to drop, no vaccumn leaks all grounds have been cleaned and its still doing it I can rev to any rpm higher rpms make it backfire , new fuel pump, wires, fuel lines, cas, and coolant temp sensor. the motor pretty much has a lot of hesitation under throttle its really slow but its firing on all the cylinders and getting fuel . I checked fuel pressure a few days ago at idle it was 43 psi

[urbanskiben]

check to make sure your not sucking air round the injectors i have this same problem jus rebuilt my head and it started this too

[destroyyourmind]

you know that could be it I did pull off my rail because I had an injector go bad I had the same problem before. I backfired through the intake earlier which Im about to go check timing. it was in time before I don;t understand how it could be out of time unless I jumped time.

[destroyyourmind]

so timing is good it sputtered really bad to the gas station it had less than a quarter tank I put some 93 in it and it seemed to run good for the rest of the way back till I tried to get on it and it puttered like the maf was unplugged but only did it for like 2 seconds and it still seems really sluggish

[owlznite]

FPR wont solve your problem. before you buy one, you could atleast test your current one.check your timing and your secondary ignition first. also check your egr to see if its failing and check for vacuum leaks. start with the basics before just throwing parts at it

[liquid_cool]

what type of MSD system do you have?...take a pic for us on how its set up...i have a bad feelin you forgot a step with your MSD set up.

[destroyyourmind]

I swapped the tps and its still doing it and I also adjusted it within spec, the cars intake is way louder than normal I mean its like swooooosh when I rev I don't think I've ever heard it like that the throttle response is so s***ty I drove around for about 1 hour and it didn't pull any codes. I don't have the msd ignition anymore I have to set it all back up and I'm way lazy haha.

[chetorch]

hey man I was searching google and happened to find this thread, I have a similar problem, I posted this on 240atlanta also... http://240atlanta.com/forums/s...40121, anyway I'd figure I'd check up on this thread and see if you found a solution.

[destroyyourmind]

appreciate it I noticed my dizzy cap and rotor were pretty bad I'm gonna swap them and hopefully its it I know its a spark issue its backfiring under load from the unburned fuel, hesitation and it ran a little better after I cleaned the cap I'll let you know how it works out.

[destroyyourmind]

so new ngk iridium plugs ngk wires cap and rotor and still its got alot of hesitation I mean when I give it full throttle the tach looks like a second hand from a clock its super slow but runs great at idle and at low rpms only. doesn't sputter or backfire until higher rpms and when it cuts out it sounds like a raunchy fart for serious haha. the car is undrivable because if I ever had to get on it, it will bog really bad. it doesn't smoke either at all only when it bacdkfires. I have no egr, a gutted cat tried multiple ecu's, mafs, and still it does this.