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PoleCat 04-24-2013 08:23 AM

Check engine light
 
Is there anybody out there that will/can reset my ECM? I replaced three busted vacuum lines that I feel 99% sure were the culprit. I went down to Advance Auto for a reading and it indicated lean on both banks. So it makes sense. But Advance won't/can't clear the light and I hate to have to disconnect the battery just to see if the condition has been cleared by the repair.

gregzoll 04-24-2013 09:03 AM

The auto stores for the majority do not have people that know how to understand the diagnostic info. Napa, you may be able to find someone. The best place is a local mom & pop shop. Could just be that you have bad gas. Pour some Lucas Injector cleaner in at the next fill, unless already full, then pour it in, and run through the tank. Then take and get the next reading at the mom & pop shop.

Either this http://www.lucasoil.com/products/dis...el%20Treatment or use this first http://www.lucasoil.com/products/dis...stem%20Cleaner

wkearney99 04-24-2013 09:10 AM

You'd probably be better served asking this kind of question on a forum that focused on your brand of vehicle.

If it's a newer car with an OBD port then you could get a bluetooth-to-obd adapter (cheap, around $25 on ebay) and use a smart phone app to read the codes and reset the ECM. I use an app called Torque on my android phone for this, works great.

PoleCat 04-24-2013 09:26 AM

Quote:

Originally Posted by gregzoll (Post 1166143)
The auto stores for the majority do not have people that know how to understand the diagnostic info. Napa, you may be able to find someone. The best place is a local mom & pop shop. Could just be that you have bad gas. Pour some Lucas Injector cleaner in at the next fill, unless already full, then pour it in, and run through the tank. Then take and get the next reading at the mom & pop shop.

Either this http://www.lucasoil.com/products/dis...el%20Treatment or use this first http://www.lucasoil.com/products/dis...stem%20Cleaner

That was actually my first inclination because I had just switched to the front tank because the fuel in there is maybe a year old by now. I have been running the back tank to reduce load behind the axel. So I was looking over the guys shoulder and saw for myself the read out. Looking under the hood I quickly noticed that three vacuum lines had rotted completely open. They have been replaced now. The truck runs great. I understand the light will clear itself if no fault is found after around 70 miles or so. And I do run injector cleaner through it occasionally. It has always ran great.

PoleCat 04-24-2013 09:29 AM

Quote:

Originally Posted by wkearney99 (Post 1166147)
You'd probably be better served asking this kind of question on a forum that focused on your brand of vehicle.

If it's a newer car with an OBD port then you could get a bluetooth-to-obd adapter (cheap, around $25 on ebay) and use a smart phone app to read the codes and reset the ECM. I use an app called Torque on my android phone for this, works great.

Yeah, I forgot to mention it is a '96 f-150. I have a stupid phone so running apps is out but I have a nifty laptop that I could connect via usb. I will be looking into that.

toluene_hawk 04-24-2013 10:47 AM

Yeah, you wouldn't want to remove the neutral from the battery, that's too much work. I suggest a little bit of electrical tape over the CEL, that will make it go away.

TheBobmanNH 04-24-2013 11:09 AM

You don't need a computer or a phone, just buy a dummy reader off Amazon or wherever. I have one of these :

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

Works great, lets you reset the codes. Assuming your '96 has an OBD2 connector, of course.

gregzoll 04-24-2013 12:59 PM

Quote:

Originally Posted by toluene_hawk (Post 1166218)
Yeah, you wouldn't want to remove the neutral from the battery, that's too much work. I suggest a little bit of electrical tape over the CEL, that will make it go away.

Yeah, that is like telling people, that they do not have to put air in their tires, that it is okay to run around with flat tires and drive on the rims.

gregzoll 04-24-2013 01:03 PM

Quote:

Originally Posted by TheBobmanNH (Post 1166235)
You don't need a computer or a phone, just buy a dummy reader off Amazon or wherever. I have one of these :

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

Works great, lets you reset the codes. Assuming your '96 has an OBD2 connector, of course.

A 1996 should have a OBD2, since that is when they were widely adopted.

http://en.wikipedia.org/wiki/On-board_diagnostics

wkearney99 04-24-2013 02:07 PM

Quote:

Originally Posted by PoleCat (Post 1166165)
Yeah, I forgot to mention it is a '96 f-150. I have a stupid phone so running apps is out but I have a nifty laptop that I could connect via usb. I will be looking into that.

More trouble than it's worth to use a PC and a USB connection. It's a hassle trying to get all the drivers and software to speak to each other properly. It'd be a LOT less trouble to just get a standalone OBD display, one that has resetting capabilities.

Also note, many vehicles will clear their diagnostic codes (un-light the CEL) if you leave the battery disconnected for 10 minutes. The code will likely still be in the computer but the CEL won't re-light until the same error trips again.

47_47 04-24-2013 02:34 PM

If the lean condition has been repaired, just drive it. The light should go off soon enough (3 drive cycles).

PoleCat 04-26-2013 08:38 AM

I heard that it would go off on its own eventually. I drove to Indy and back yesterday and it remained on so maybe there is a hose I missed somewhere.

gregzoll 04-26-2013 08:42 AM

Could be that, or a bad wiring harness.

wkearney99 04-26-2013 09:41 AM

Did you disconnect the battery? If not, you're wasting your time posting about it. Either get a programmer to clear it or disconnect the battery. That'll clear the CEL until it detects the problem again.

PoleCat 04-26-2013 09:52 AM

Quote:

Originally Posted by wkearney99 (Post 1167593)
Did you disconnect the battery? If not, you're wasting your time posting about it. Either get a programmer to clear it or disconnect the battery. That'll clear the CEL until it detects the problem again.

But the battery terminal is all icky and greasy and stuff.:jester:


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