why am i not getting any codes
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why am i not getting any codes
i have a 1989 f250 5.8. i've been having some stalling at idle and cutouts while driving. the engine light does'nt work. i tryed pulling codes but i'm not getting anything. i know i should have some codes because i've had the iac the tps and egr sensor disconnected. the tps and egr sensor were both replaced. along with fuel pumps. does this mean the ecm is bad. any thought on the subjuct would be greatly appreciated. thanks oh and i know my code reser is working because i hooked it up to my neighbors 91 and got a code immediatley.
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From: Virginia
i can't answer about the condition of your computer. But, I couldn't get the codes for my 88 f250 for a while because the connectors were all corroded. I had to scrape the metal contacts with a razor blade and use electrical contact cleaner to get anything to work.
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From: Easton,Ks
Originally Posted by hotshot414c
i have a 1989 f250 5.8. i've been having some stalling at idle and cutouts while driving. the engine light does'nt work. i tryed pulling codes but i'm not getting anything. i know i should have some codes because i've had the iac the tps and egr sensor disconnected. the tps and egr sensor were both replaced. along with fuel pumps. does this mean the ecm is bad. any thought on the subjuct would be greatly appreciated. thanks oh and i know my code reser is working because i hooked it up to my neighbors 91 and got a code immediatley.
About the only other things it could be is wiring or the EEC Power relay is not feeding power to the computer.
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right i'm not getting any codes. when i hook up the code reader i hear relays and stuff clicking. then nothing. i tryed the engine on test, and the idle and stuff changes. so the tests are apparently working. i should have set a code by unplugging the egr and iac right? thanks again
Last edited by hotshot414c; Aug 16, 2007 at 08:08 AM.
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From: Virginia
again, if you aren't getting ANY codes, not even a 11, then the connection between your code reader and the connector in the engine compartment is bad. Clean the terminals and try it again. You should get some kind of codes.
Also, you could try the lightbulb check (hoook up a 12v bulb instead of the code reader) and make sure you are getting something electrical from the connector.
Also, you could try the lightbulb check (hoook up a 12v bulb instead of the code reader) and make sure you are getting something electrical from the connector.
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its an auto. the bulb does not light up ever. checked the bulb and it is good. also tryed getting codes with a meter. still got nothing.
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Posting Guru
Joined: Aug 2007
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From: Colorado Springs
ok part of the wiring mess on fords if the check engine light wont come on then the diagnostic wont work.
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ok thanks for the input guys. changed the computer and now the cel works and im getting codes. i got a code for the egr. would the egr cause the truck to stall out at idle and sometimes not want to start back up? when it stalls it makes a sucking sound.
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From: Easton,Ks
Originally Posted by hotshot414c
ok thanks for the input guys. changed the computer and now the cel works and im getting codes. i got a code for the egr. would the egr cause the truck to stall out at idle and sometimes not want to start back up? when it stalls it makes a sucking sound.
Looks like I was right about the computer.
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Joined: Nov 2001
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From: Topsfield, MA
You might have shorted the diagnostics in the computer...
...I did that once.
There are two wires you can ground (forget which ones but could look it up) that will make the CEL come on to confirm that it actually works...I did that and it worked...so I knew the computer was fried.
...I did that once.
There are two wires you can ground (forget which ones but could look it up) that will make the CEL come on to confirm that it actually works...I did that and it worked...so I knew the computer was fried.
