hey, im working on my 88 tbird, its got the 5.0 EFI and i was wondering what is going on with it
problem: it will sit and idle all day but when i get to drive it, its starts just chugging, then i come to a stop it idles...its got me confused, i cleaned out the IAC motor, and i still cant get her to run rite, thank you for any help in advance and thanx for having me :) :bowdown:
lol thanx for the welcome, sorry for that, im wondering what it would take to make her run right, so i can drive it, other then that, thats the only thing wrong, sorry! :)
what is your question? :dunno: anyways Welcome
Will it rev in park ok? If not, I would check to see if the catalytic converters are clogged.:D
My car was doing the samething. Mine ended up being a bad EGR valve. I blocked it off because I had already replaced it once and didnt want to waste money on another. Now it runs great.
I would run the computer codes first
Welcome.
Will it surge when you get it above idle or not rev up at all? Is it a miss or more like running out of fuel?
not to hijack his thread but I have a problem where the car acts like its running out of fuel, new FPR and fuel pump. car has me pretty baffled 87 TC
no, it will rev up fine in park, it does have headers on it if it makes a diff, w/ no 02 sensors, but i doubt that would cause it, and on a side note, its at my dads 2 hours away so i cant just get out there and work on it unfortunatley, and thanx for the welcome, i don't have a check engine light on tho....and cougarman, lol no converters on it anymore :( lol
@50tbird 88 it feels like its running out of gas, because i can rev it in park w/ no miss, im going to cover the basics this w/end tho, im going to get a new fuel filter and see if that changes anything, then ill go from there, but any suggestions are welcome:)
i think the o2 sensors are an extremly important part of the SEFI system. the computer needs communication from every input sensor in order to properly run the engine. it's not like retro fitting an old school carbureted engine with aftermarket fuel injection....where you can choose not to use o2 sensors if you want. don't the headers have a spot for the o2 sensors? the following is an excellent website to read and understand fuel injection: http://www.fordfuelinjection.com/
I would gather codes and add the o2's. But that's just me, though. In the past year on this forum i've learned enough to do basic trouble shooting. i am in no way an expert.....yet. In fact it feels strange chiming with advice cause all i ever do here is ask questions.......
will a bad or no O2 cause the engine to die like its starving for fuel?
Codes.....
+1
If you don't have codes you're wasting money just throwing parts at the car....
here, look under the computer section on the left to check the codes.
http://www.therangerstation.com/tech_library/index.php (http://"http://www.therangerstation.com/tech_library/index.php")
ok, sorry its been so long, finally got it here so i can work on it, and to my suprise, no codes...so im stumped
Do you get code 11's indicating everything is OK?
no codes, no code 11, none, it just says "no codes stored" after i turn the ignition off...
Welcome aboard. Enjoy the site.
Welcome aboard. Enjoy the site.
BTW, Are you near Pittsburgh?
No code 11 is not good. It would mean the program in the EEC is not running.
When you turn the key on without starting the car the fuel pump should run for 1 or 2 seconds. If it runs continuously, that's another indication the EEC's program is not running.
I'm guessing a code scan tool gave the "no codes stored" message.
Try the other methods of pulling codes.
Use "therangerstation" link that daminic posted
In the computer section, EECIV diagnostics.
If you think it may be the eec, I have one from my '88 Sport I no longer use or need. If you want to borrow it to test, then pay shipping, and I'll send it to you. PM me if interested ;)
i don't think i need it, i found my prob, im pushing 10-15PSI fuel pressure, im going to replace the pump and see if thats the prob :)
Did you check the fuel pressure regulator?
no, i have about 40psi @ the rail tho, i put a new exhaust on it, all the way back, put a coil on it, and now it will sit and idle all day but as soon as i give it gas, it dies out, i think its throttle position sensor, im trying that today. i also replaced the IAC motor, do those need to be reset on our foxbirds?
i went to take it off the lift at work, its 4 arms on the side, with the bump underneath, now it wont even get up that hill...it drove in and it will start shaking and die, any other ideas, no new codes
well i found something out, the gauge i was using rest at 10 and i only had 30psi! is that enuff to run it well or no?
Are you checking it with the vac line on or off the regulator? It should be 39-40 psi with the vac line off the regulator @ idle.
no,i am not, i was checking it with it on the aftermarket motorcraft check valve at the begging of the engine, so would that be part of my prolem then? thanx again, id love to see my tbird on the road here in a couple of days
One ? I have, how old is the gas in the tank?
Read this thread and try pulling codes again. (ignore the last post #10 in the thread)
You may or may not have a working check engine light. If the CIL doesn't blink, use the meter or test light method.
http://www.foxtbirdcougarforums.com/showthread.php?t=8897&highlight=pull+codes
I watched this thread, he doesn't have codes , no 11 no nothing. he has no o2 sensors, instant light on computer will run it's own thing. He either doesn't know how to read codes or I don't know. You have to have a code from the ecc without O2'S. The comp needs that.
That's why I want him to try again on the codes. Maybe something is wrong with the code reader he was using.
if your still not getting a code 11 I would think you have a computer problem.
I had that happen once. no codes, but still wouldn't run and idle right. Mine ran great after the new computer and a new temp sensor
No O2 sensors? Yeah that's a big problem, a big one. If he bought the thing with the O2s removed then who the hell knows what other crazy things were done to the car....
ok, i got a code 11, but if after i start it, hold it at 3 grand, you can hear the computer make adjustments and then it will run fine all day long...now im more confused then i was, and it is running fine without the o2 sensors...like i said, its now just when i start it up that it struggles to keep goin'
you can manually check your temp sensors and any others, with a meter to make sure they are in proper working range.
Without input from the O2 sensors the computer is in failure mode and will not run correctly. You need to get those O2s in ASAP. It's not optional. You will have problems getting the car to run right forever if you don't put the O2 sensors back in.
absolutely manditory=o2 sensors!
Welcome, are you in Pa.?
I agree with the guys on here, you really need the O2 sencers. I have an aftermarket exhaust without the cats but I do have the sencers, although my chl comes on and throws a code that says the o2 sensor on the the right bank isn't opening. Come to find out when the did my exhaust he didn't leave much room between the pipe and firewall where he put the bung and it crimped the wire.
My 88 does the same no acceleration past 1/8 to 3/8 throttle , it barks spits backfires through the intake mine has the o2s ,completly stumped ready to pull all that off and run a carb
that sounds like a TFI module
When My mark VII fuel pump failed it acted like that too , I'd check fuel pressure and have the TFI tested
well i replaced pump, strainer, and filter, didnt drill for the 02's and it runs like a champ, thanx for you help guys, sorry it took so long to get back
WAIT....THERES NO NEED FOR AN EGR??????????????:confused::confused::eek::eek: ...since when?????? Mine ran like shpit without it
lol its there, just blocked :)
Mine is not functional, and I haven't missed it. still get 25+ mpg on the freeway anywhere from 55 to 80mph on the same day. The last tank I got over 400 miles to and averaged 25.8 mpg with almost 100 miles city.
So how do you go about removing it? That will save me some headache when i go to put my headers on.
it sounds like your going to all the big stuff first, i would maybe try checking your 1. Spark plugs 2. TFI module 3. Fuel filter....my car was doin the same exact thing, i cleaned the EGR, changed out my plugs fuel filter and TFI...now she runs great, it could be just about anything, i dont know if thats what it is, but hey, its a suggestion
You still need the 02 sensors. They are the tattletales of whats going on in your engine in reference to air/fuel ratios.