Erratic rpms
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Tuned
Joined: May 2007
Posts: 446
Likes: 7
Erratic rpms
89 f250 351 5 speed
This winter my dad was driving the truck and he said it bogged down real bad and almost died, then came back to life. I took a look at the ac compressor was all thrashed up because i guess it locked up.
So i unlplugged the compressor and havent had a problem since, Ive put quite a few miles on it since then.
So anyway I do some driving after school and i park, and a loud pop comes from my truck a whoosh, so i take a look and the ac line popped, which didnt matter to me because i cant use the ac. So we ride dirtbikes a while and i go to leave and my truck starts idling all stupid and the orange check engine light comes on. I got it home, but on the way the truck would stumble some, or the rpms would shoot up and i would have to shut the truck down.
This is my only ride, so it really sucks
You guys have any ideas?
This winter my dad was driving the truck and he said it bogged down real bad and almost died, then came back to life. I took a look at the ac compressor was all thrashed up because i guess it locked up.
So i unlplugged the compressor and havent had a problem since, Ive put quite a few miles on it since then.
So anyway I do some driving after school and i park, and a loud pop comes from my truck a whoosh, so i take a look and the ac line popped, which didnt matter to me because i cant use the ac. So we ride dirtbikes a while and i go to leave and my truck starts idling all stupid and the orange check engine light comes on. I got it home, but on the way the truck would stumble some, or the rpms would shoot up and i would have to shut the truck down.
This is my only ride, so it really sucks
You guys have any ideas?
Posting Guru
Joined: Dec 2006
Posts: 1,923
Likes: 0
FIRST OFF ALL chek for codes.. if you dont have a code scanner this site will show you..
the try
cleaning the IAC valve...
take it off clean of all the goo and carbon in it.. make shure everything is moving freely..
normaly i let mine sit in kerosine for 1 minuut then brush it with an old toothbrush..
and somethimes i use carburator cleaner too.. clean it post back with results
but it sounds mostly like an bad TPS sensor chek out
www.fordfuelinjecton.com how to chek it.
the try
cleaning the IAC valve...
take it off clean of all the goo and carbon in it.. make shure everything is moving freely..
normaly i let mine sit in kerosine for 1 minuut then brush it with an old toothbrush..
and somethimes i use carburator cleaner too.. clean it post back with results
but it sounds mostly like an bad TPS sensor chek out
www.fordfuelinjecton.com how to chek it.
Posting Guru
Joined: Dec 2006
Posts: 1,923
Likes: 0
under the trottle body..
Ford Fuel Injection » Throttle Position Sensor (TPS)
but please chek for codes first the last thing you wanna do is changing parts for nothing..
Ford Fuel Injection » How To Run a Self-Test
Ford Fuel Injection » Throttle Position Sensor (TPS)
but please chek for codes first the last thing you wanna do is changing parts for nothing..
Ford Fuel Injection » How To Run a Self-Test
