I am trying to determine if I need a new crank position sensor on my 83 tbird cfi 5.0 winter beater. what would be some symptoms of one going bad?
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On an 83? They didn't have them yet, did they?
there arent any on 87-93's, I really doubt they're on 83s. maybe you're thinking of throttle position sensor? what makes you think that's the prob?
The '83 5.0 has the EEC III system and does have a crank position sensor.
It sort of has the same function as the stator in the EEC IV distributor.
It would cause ignition problems.
Crankshaft Position sensor = Pickup Coil
No it does have one because its in my hand right now. There are no sensors on the distributor at all. So the only sensor to tell the ecm to fire is the crank sensor. In 84 they moved to tfi modual on the distributor. But I am not sure if this is causing my no start condition occationaly
usually if something like that goes wrong, it'll fail completely. Like you'll drive the car all the way home then when you go to start it again it won't work... but if it is occasionally works i would assume something else is triggering it.
AUTOZONE CAN CHECK YOUR SENSOR. I looked it up. Just go ask them to check it, and they will tell you if it is good or bad. But have the person that has been there the longest test it. Cause some people don't know cars.
From what Eric has said before that could be a knock sensor you are looking at
nope the knock sensor is on the drivers side of the engine
Andrew believe me and everybody else when we tell you
"your car has no crank sensor" as you call it.
Crank sensors were not available on these cars until the 90's,i believe when the 4.6l was introduced.
Now i know i'm right so i won't argue with you but think what you want.
Post a pic of the part you have in your mand and i'll bet we can name it,and it won't be a crank sensor.
Heres the link see for yourself. Even my chilton manual has it listed for my car. But thats Not what I am getting at. Whether it has one or not what are the signs of one going bad on any car.
http://www.partsamerica.com/PartDetails.asp?SourceArea=&SourcePage=SEARCHRESULTS&MfrCode=NIE&MfrPartNumber=FF440&PartType=762&PTSet=A (http://www.partsamerica.com/PartDetails.asp?SourceArea=&SourcePage=SEARCHRESULTS&MfrCode=NIE&MfrPartNumber=FF440&PartType=762&PTSet=A)
Dominator He is right. Some fords came with a crank sensor. Its 33 bucks from autozone. I've never seen them on a t bird but hey its got one. Most of the ones I've seen were on 351's. It used the distributer for just that, Spark distribution. The distributer was hollow inside.
Oh yeah, to answer your question is going to be hard.... This is one of those sensors that can do alot of dumb things. It is a magnet so it can be weak and erratic in sending its signal all the time so your car will hardly run. Or it will cut out when its hot. Or it will just die.
1984 Car Shop Manual
Crankshaft Position (CP) Sensor and Pulse Ring
blah-blah-blah...
(picture of sensor)
blah-blah-blah...
DIAGNOSIS
For diagnosis, refer to EEC III Diagnosis, Section 28.
...flip-flip-flip-flip........ Ahhhhhh!
I took the liberty of posting the entire Section 28 below. Enjoy.
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Hey man you proved me wrong :bowdown: my bad.
If this does exist on your car,they can go bad and definetly cause a no start condition,they can also have itermitten problems(start,no start).
Being a ford fan i thought i had seen it all,guess i learned something new today.
I know that the 83 car have it and the 89+ cars have it. I think that all the eecIII cars had it, skipped ours and then came back on later engines
Yea I think thats the culprit because I know thats the only thing I have not changed yet. It weird because one day it runs perfect then the next i will drive somwhere come out and my car wont start. And sometimes there seem to be a hesitation when accelerating. Thanks for your help.