This is topic car hickups really bad in forum Tech Talk at Northern California Ford Owners  .


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Posted by OneBadHatch (Member # 970) on :
 
when i get on the gas it goes normal then just starts kinda skipping like its not getting spark or fuel or something, i cant tell what it is i have a new mass air 155lph pump pressure regulator 24lb injectors, the dyno tune said i was running really lean even though my fuel pressure was normal, the idle is also bouncy and sometimes it stalls after i push the clutch in, i have no idea what to check now i have checked all vacuum lines, exhaust for leaks 02 sensors mas air timing fuel pressure and it all seems normal..any ideas?? thanks!!
 

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Posted by GreyLX (Member # 5601) on :
 
Im gonna guess Vacuum leak. Unmetered air may be slipping into your intake stream.
 

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Posted by street_illegal_stang (Member # 1554) on :
 
start it up at night and spray the plug wire with some water..if you see any spark then I would get new ones..
 

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Posted by the walrus (Member # 6010) on :
 
Very good possibility the TFI module has gone bad. Borrow a working one from a friend and throw it on your car, see if it makes any difference. Don't forget the heat sink compound that goes between the TFI and the distributor, you can get the stuff at radio shack. If you decide to buy a new TFI, the Ford units are the best, but also the most expensive.

Justin
 

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Posted by OneBadHatch (Member # 970) on :
 
well my plug wires are brand new 9mm fms wires, and i have a msd pro billit thats only about a year and a half old. ever since i put this motor in it hasn't been running right and i cant figure it out, i would take it to get dyno tuned to see if thats the problem but it shouldnt be running this poorly with the mods i have
 

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Posted by street_illegal_stang (Member # 1554) on :
 

quote:

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Originally posted by street_illegal_stang:
start it up at night and spray the plug wire with some water..if you see any spark then I would get new ones..

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I'd try it anyway..I had some new fr 9mm wires that where bad after a few weeks,they're just shitty like that .Check for codes,Usually when a tfi goes,the car will just won't start.Check the tps volts range ,check grounds,vacuum routing of egr system. see if your EGR regulator is working.
If all the above is okay you should put a vacuum gauge on the car where its visable during driving to see if anything funny is going on.
I hate when shit like that happens to my stang..
One time I had your symptoms and fixed the problem by replacing the gas tank as the tank fuel pick up shroud has broken free from the cheap ford tack welds...so when i gased it all the gas would move away from the pick up..
another time was when my vss went. then another time was the bad plug wires nightmare,they all had sparked so i went ahead and replaced alot of sensors thinking the wires where good,I drive it like this for a month the parked it..Someone suggested the spray water trick and bam..
After the replacment all my problems vanished
5.0 mustangs...They're fast and cheap but don't buy them unless you like working on them.
 

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Posted by OneBadHatch (Member # 970) on :
 
my car has some new codes since i put the new mas air in now its giving me 44 94 and 13 and im not sure which part of the air intake system i has to do with does anybody know what could cause these codes??
 

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Posted by 92stangLX (Member # 3252) on :
 

quote:

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Originally posted by OneBadHatch:
my car has some new codes since i put the new mas air in now its giving me 44 94 and 13 and im not sure which part of the air intake system i has to do with does anybody know what could cause these codes??

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44 AIR system inoperative (smog code)
94 AIR system inoperative - Transmission TCC circuit/solenoid problem
13 (O) ISC did not respond properly (extends to touch throttle then retracts for KOEO) -
(R) Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)
(M) ISC sticking, open ITS circuit or TP sticking


Sound like you have issues with your smog shit (or it's not hooked up) and your IAC/ISC. If you are having wierd idle then change your IAC/ISC or make sure it is hooked up properly. Next sort out those smog codes
 

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Posted by TOPnotch (Member # 1340) on :
 
Vacuum leak!!!!!!


 

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Posted by OneBadHatch (Member # 970) on :
 
not to be dumb but what is the IAC/ISC? also i dont have any smog shit lol umm my pump coal box is all gone and what so what do i need to check/replace??
 

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Posted by street_illegal_stang (Member # 1554) on :
 
I think idle air control,and idle speed control.
make sure you have all the egr shit connected or the car will do strange things and also no vacuum leaks.use a vacuum gauge.vato zone loans them out
 

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Posted by OneBadHatch (Member # 970) on :
 
checked everything possible there are no vacuum leaks.... so if i don't have a smog pump or coal box or anything what am i supposed to connect the smog stuff too
 

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Posted by GreyLX (Member # 5601) on :
 

quote:

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Originally posted by OneBadHatch:
checked everything possible there are no vacuum leaks.... so if i don't have a smog pump or coal box or anything what am i supposed to connect the smog stuff too

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So what did you do with the vacuum lines that go to the smog equipment?


 

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Posted by OneBadHatch (Member # 970) on :
 
plugged/removed is that bad?? i didn't think it was bad when i did it but it would'nt be the first time i was wrong lol
 

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Posted by 2stangs69-91 (Member # 1951) on :
 
I would sneak up behind it and scare the shit out of it!. A surefire cure for hickup's...
 

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Posted by OneBadHatch (Member # 970) on :
 
haha yea... i tried that lol
 

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Posted by Jdub07 (Member # 2728) on :
 

quote:

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Originally posted by GreyLX:
Im gonna guess Vacuum leak. Unmetered air may be slipping into your intake stream.

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Posted by OneBadHatch (Member # 970) on :
 
if one more person says vacuum leak i swear to god.... there is NO vacuum leak i have checked every little thing for it with carb cleaner there is not even a hint of a leak...can anyone else give me some useful info??
 

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Posted by 2stangs69-91 (Member # 1951) on :
 
have you tried clocking the mass air meter. Rotating it around to see if the pickup tube for sensor needs to be in a different spot. I have never ran into problems with that ,but I have heard of people who have. good luck
 

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Posted by OneBadHatch (Member # 970) on :
 
no, i just bought a new one that is calibrated for where its sitting in the intake tube
 

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Posted by OneBadHatch (Member # 970) on :
 
nothin?
 

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Posted by street_illegal_stang (Member # 1554) on :
 


[ November 09, 2007, 11:29 PM: Message edited by: street_illegal_stang ]
 

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Posted by street_illegal_stang (Member # 1554) on :
 
did you ever spray the plug wires? have you seen what vacuum your getting during the "hick ups" via gauge in car or boost gauge; that can tell you a few thing such as flutering vacuum indicate bent valve. you can tell if your timing is too advanced.. buy a manual an read up on the trouble shooting section as it verifys symptoms
and points at possible faulty part. do you have any codes poping up?
 

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Posted by 92stangLX (Member # 3252) on :
 

quote:

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Originally posted by OneBadHatch:
if one more person says vacuum leak i swear to god.... there is NO vacuum leak i have checked every little thing for it with carb cleaner there is not even a hint of a leak...can anyone else give me some useful info??

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