M850 downpipe install now idle and start up issue

m8ish · 02-17-2024, 05:49 PM

Had my downpipes installed on Thursday. I am having rough idles and have had a couple issues with the car starting. Anyone have an idea? O2 sensors? Leak?

Dasky_spas · 02-17-2024, 11:43 PM

Did they move your coolant reservoir? If so , maybe they spilled coolant on your plugs or injectors.

Dr Thrillride · 02-18-2024, 07:48 AM

Quote:

Originally Posted by m8ish

Had my downpipes installed on Thursday. I am having rough idles and have had a couple issues with the car starting. Anyone have an idea? O2 sensors? Leak?

If it was O2 sensor, you'd get a CEL, but there’s no O2 sensor on the secondaries. Dasky may be right given they went from top to get at connection to primaries. Or something else wasn’t connected properly

Supposed to be a simple job

02-17-2024, 05:49 PM	#1
m8ish Registered 0 Rep 3 Posts Drives: BMW M850I Join Date: Jan 2024 Location: Tomball, TX iTrader: (0)	M850 downpipe install now idle and start up issue Had my downpipes installed on Thursday. I am having rough idles and have had a couple issues with the car starting. Anyone have an idea? O2 sensors? Leak?
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02-17-2024, 11:43 PM	#2
Dasky_spas Lieutenant 140 Rep 524 Posts Drives: Bmw Join Date: Mar 2023 Location: NYC iTrader: (0)	Did they move your coolant reservoir? If so , maybe they spilled coolant on your plugs or injectors.
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