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2007 LS Base w/171,000k. I am working with my mechanic on addressing the issues.
Current Dash lights: Check Engine, "! triangle", VSC ASF, Traction Control
Mechanic's initial thoughts:
Due to the number of codes, it could be the ECM (comm errors). He has reset the codes to see what trips first.
O2 Sensor is needed
Catalytic is likely needed. Determining which one
Need to smoke test the exhaust to verify leaks. Seems louder than normal near the engine (over time)
Car does "burn" oil as is common in the forum. Not chronic. I use Liqui-Moly oil flush and Liqui-Moly high mileage additive. It helps and oil is very clean
Note: Just the other morning, the car was isling "rough", shuttering slightly (Illinois, 75 degrees, cold start). Nothing since.
My questions in advance of diagnosis:
1. Consequences of replacing ECM?
Pro's/Cons of online programmers using VIN
Purchasing "used" on-line
What other programming fallout will occur? Keys, Navigation, Bluetooth, stereo, milelage...heck, every aspect is computerized.
2. Muffler system and Cat
Best place to get replacement?
Brands? Magna-Flow, etc.
I prefer to stay quiet/close to OEM sound profile if I can.
The Cats seem to be located after the manifold, yes? Seems to be one part vs. what Magna-Flow offers
I removed the heat shields. The material was resting on the muffler and rattling.
First, see what codes come up again. It takes about 100-150 miles of driving typically. No point in guessing without the test results.
You should pull a couple of spark plugs. They could be fouled depending on how much oil it burns, plus they are past due unless changed previously.
FYI you can't _just_ replace ECM with a used one. Firstly it must be exact same part number as one installed in the car (much variety there). Secondly it will need to be coded for your smart key/immobilizer system - requires a dealer or versed locksmith. Ideally eeprom data needs to be transferred too (it contains some extra data apart from VIN).
Thank you, Hence the "fallout" question I suspected that there would be further reaching work and details. For lack of a better term, it sounds like the "configuration" (EPROM, etc.) needs to be saved and transferred. If it is the ECM, my concern is opening Pandora's Box without having a peek inside first. As for the ECM services on-line....are they legit? I am in the tech field and understand the dependency details. Thanks for your opinion.
I personally do not believe the ECM is the problem. Unless Maybe you got a jump start and did not hook up leads properly and possibly can short or surge the ECU/ECM.
GEEZA DUDE if you were to replace original exhaust system with a FULL MagnaFlow replacement and O2 sensors, your looking at least $4k.
If i were you i would run a full tank of Cata Clean. I think one bottle treats 4 gal. Of fuel i would buy 6 bottles. Some walmarts carry Cata Clean for a great price, better then advance auto or autozone. Be prepared to pay close to $200 if you buy from autozone or advance.
09-04-22, 06:22 AM
2007 Codes, Codes, and more Codes
I suspected that there would be further reaching work and details. For lack of a better term, it sounds like the "configuration" (EPROM, etc.) needs to be saved and transferred. If it is the ECM, my concern is opening Pandora's Box without having a peek inside first. As for the ECM services on-line....are they legit? I am in the tech field and understand the dependency details. Thanks for your opinion.
