SoCal Jet Boats
Discussion => The No Wake Zone => Topic started by: wanabe on January 25, 2008, 03:26:14 PM
-
Anyone know how to reset (turn off) 'engine' (aka 'idiot') light on Jeep Grand Cherokee 4.0?
Does that have to be done by computer?
I was messing with something in my jeep and unplugged sensor into throttle body; must have been smog related because now the engine light is on (and I want it off). I have to get it smogged and will not pass with the light on.
Thanks.
-
disconnect the battery ???
-
That won't work (I'm pretty sure); the failure is now logged onto the microchip.
I'll try it if I don't hear anything else (then I'll have to reset all my radio stations again :-\ )
-
From what I understand....even if you cleared the CEL (check engine light) with an obd tool....it is still logged into the chip and will still show in the smog printout....either that or it shows that you recently reset it.
I have an obd2 tool, but it only works with vw/audi/seat/skoda... i cleared the a CEL on my parents '98 jetta (intermittent O2 Sensor error) right before they went to smog...and it failed the OBD2 scan....
-
my suggestion is to drive it....it will clear itself in time.
-
my suggestion is to drive it....it will clear itself in time.
I don't think so; had bad O2 on van; replaced both; drove over a year with that stupid light on; finally got someone to reset it for me; I was sure it was O2, which was proven 'cause light didn't come back on.
Passed smog twice since but I don't know if the failure showed up on a report or not.
-
What i ususually do when a light comes on is i take it to the school i graduated from and let the auto shop teacher clear it for me for free. Thats what i recommend if you know your old shop teacher.
-
On GM vehicles there is usually a way to have the computer tell you what error codes are currently in the ecm. Usually something pretty silly to prompt for the code., that or you have to plug a wire into an empty plug on the computer harness...research it on the Jeep forums.
-
On GM vehicles there is usually a way to have the computer tell you what error codes are currently in the ecm. Usually something pretty silly to prompt for the code., that or you have to plug a wire into an empty plug on the computer harness...research it on the Jeep forums.
The cause has been corrected but that doesn't clear the engine light; that won't clear until force cleared by the computer I guess; I thought there may be a non-computer way to reset it.
-
Battery worked on my parent's suburban 2 weeks ago.
-
Battery worked on my parent's suburban 2 weeks ago.
OK; will try that
-
i know with Kia's the only codes that wont clear with the battery are are bag codes. check engine codes will clear unless there is a problem.
-
You should be able to get an inexpensive code "reader" that can also clear codes. Check the adds for PepGirls and Kragen this weekend.
You normally have to drive a vehicle at least 50-100 miles for the computer to cycle through its system checks before you can complete a smog test.
-
When you disconnect the batt ,make sure to tap the brake turn the wheel etc to discharge capacitors etc. Also may run crappy for a while after reconnect while it relearns (i believe) If you take it to pepboys or kragens they'll scan it for free (or loan you the tool)
-
Just pull the Neg Bat cable off for a few minutes put it back on and you will be good to go. Doesn't put the light/error code on anything. If ya was to take the light bulb out of the idiot light it WILL show up on the smog test, and you wouldnt pass. Resetting radio presets and the time is what a 2 min job? Big deal. Also if ya knocked off a vacumn hose or cracked one that will set off the light too. So check all your hoses also. Have had a place tell me once that 2 out of 3 of my 02 sensors were bad,didnt even look under the hood. Wanted to charge me about 320 bucks to fix. I said not just yet, went home and checked under the hood and found 4 rotted vacumn hoses, replaced and after about 40 miles the light went out. Jus my 2cents mark