check engine light on and no codes
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Joined: Dec 2007
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From: frostburg md
check engine light on and no codes
I posted here a while back about my truck running a little rough i had it scaned but everyone is telling me it is not showing codes but the check engine light is on has anyone had this happen I thought it was missing but if you watch the tach it does not jump any like it is missing and when i am coming home about 2 miles form home the check engine light will go out and it will run fine untill the next morning then its on again i have know idea what this could be a guy told me that the hpop might be a little week and not letting the injectos open up but i have not a clue any help would be greatly apprecieted.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
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From: Concord NC
Well, it didn't read your codes. Like Kris said, if you see your check engine light, the you have a code. If you can find someone who has a Superchips 1704 programmer, it will read them fine.
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From: frostburg md
well it sounds like im gonna have to fork out the $100 and take it to the dealer Man i hate the thoughts of paying them that kind of money just to find out whats a wrong with it
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Of the next Riffraff East
Joined: Oct 2004
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From: Concord NC
Is your light staying on? Is in on now? How is your truck running and what were you doing when it came on? If you at WOT with your chip in higher setting, you may just have tripped a boost sensor, or a HPOP sensor.
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From: frostburg md
Yea if i go and start it now it will be on it runs like it has a miss but if you watch the tach it does not move like it is missing it is worse at the lower rpms once i get over 2000 rpm you cant really tell there is any thing awrong with it. When i come home from work (about 20 miles) right before i get home the light will go off and it will run fine untill the next morning The light stays on no matter what pos it is on ive even taken it out and dis conected the batterys to try to reset the computer when the light came on i just started it and was headed to the store down the street and it came on the night before it came on i was running it home in the dark and whent to turn the chip up and i fliped it to the fast idal insted it whent to turn the truck off and when i turned it back where it should be it started to run fine
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Joined: Jun 2003
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From: Ardenvoir, Washington
I bet it is your under the valve cover 9 pin plastic piece of a junk connector is loose.. sometimes making contact, sometimes not... you can ohm check the connector on top of the cover prior to pulling the valve covers..Check it when you suspect it to have a SES light.. But, if you can get Kris to read your codes, i bet you will have a P1316...
Post Fiend
Joined: Sep 2006
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From: Sioux Falls, SD
I bet it is your under the valve cover 9 pin plastic piece of a junk connector is loose.. sometimes making contact, sometimes not... you can ohm check the connector on top of the cover prior to pulling the valve covers..Check it when you suspect it to have a SES light.. But, if you can get Kris to read your codes, i bet you will have a P1316...
HAve you tried to read the codes with bully dog removed?
Gone, but not forgotten
Joined: Oct 2005
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From: Charlotte-Fairbanks-Bflo
I've found that any good independent transmission shop will have a good code reader. I did not read the rest of this thread so I may have jumped in too soon.