My Jeep has 135 000 miles recently the check engine light went on. I took it for diagnosis and it was the knock sensors after replacing the check engine light came on again. I left the car there for 24 hours and it seemed OK. 2 weeks later the check engine light is back on any suggestions as the mechanic seems a bit lost...the cost was about $1000 to repair. I change the oil every 3000 miles and have done meticulous servicing. Could it be fouled spark plugs?
I have been going to this service center for last 10 years and they seem to have done a good job...
Clarification: Can you list the codes?
Hi I ran my cheap diagnosis computer and it came up with The knock sensor in Bank 1 is not operating properly P0325
They replaced both knock sensors one was loose or broken in initial inspection...
Well they charge you $1,000 and didn't fix the car I would say either let them fix it free or get your money back and go somewhere else. Obviously it's over their head so they should refund your money or pay a place that can really fix it with actual electronic mechanic so understand those systems. It's in their ballpark now they charge you a bunch of money and didn't fix it. Could be they got cheap aftermarket sensors could be this wiring problem but mechanics have to be able to figure that out and if they can't they should give you your money back and go elsewhere.
Thanks Scotty!
Well now they say water got into the ECM and was tripping the sensor code...now I wonder why they replaced the knock sensors at all...really disturbing. when I asked previously he said one of the knock sensor cables was loose!!!