Comes on usually when accelerating and cruising, and goes off when stopping or idling.
Is that a normal behavior for a CEL if there's a problem with the knock sensor (checked codes - it throws up 05), or should it stay on continuously?
CEL comes on and goes off for knock sensor.
- Tunes67
- Supporting Member
- Posts: 4708
- Joined: January 27th, 2005, 6:36 pm
- Location: Everett, WA
- Contact:
Normal.. anytime I have had a code thrown while driving.. its intermittant. Comes on.. goes off.. comes back on later when it feels like it.. goes off.. etc.. Gotta like the simple codes like the knock sensor though.. easy to diagnose & replace.
Tunes67
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body"
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
Ah, alright. Thanks.
I don't hear any knocking, though. So I'm not sure if the sensor is doing anything or not... I'm guessing ECU would go into limp mode, no? Is it safe to drive a car in this condition? Obviously knocking is bad for the engine, but I need to drive and I won't be able to get a new sensor for a few days.
I don't hear any knocking, though. So I'm not sure if the sensor is doing anything or not... I'm guessing ECU would go into limp mode, no? Is it safe to drive a car in this condition? Obviously knocking is bad for the engine, but I need to drive and I won't be able to get a new sensor for a few days.
- Tunes67
- Supporting Member
- Posts: 4708
- Joined: January 27th, 2005, 6:36 pm
- Location: Everett, WA
- Contact:
It might go into limp mode.. I am not sure what happens if the knock sensor fails completely.. havent had it happen to me. Hector here had his go bad and it seemed like he was still driving on it.. so I would think you'd be ok for a day or two if it doesnt seem like its running bad.
Tunes67
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body"
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
Yeh, it's running ok. I just drove it, and CEL didn't come on and it ran fine. Maybe the motor was still cold or something.Tunes67 wrote:It might go into limp mode.. I am not sure what happens if the knock sensor fails completely.. havent had it happen to me. Hector here had his go bad and it seemed like he was still driving on it.. so I would think you'd be ok for a day or two if it doesnt seem like its running bad.
Tunes67
-
- Senior Member
- Posts: 6451
- Joined: June 19th, 2004, 2:01 am
- Location: El Paso Tx U.S
- Contact:
For knock sensor maybe a bad ground can cause it. Or a sensor waiting to fail. Worst thing that happens is that the ecu goes into limp mode. There are some rare ecus that dont have limp mode as per 1st probinator. Not sure if applies to the k8 program.
I had the ghost o2 sensor codes. I took outo2s cleaned them and the code never came back.
I had the ghost o2 sensor codes. I took outo2s cleaned them and the code never came back.
-hec
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!