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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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Old 12-23-2016, 07:12 PM
tonyjh63 tonyjh63 is offline
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Location: Rome, GA
Join Date: Oct 2016
Posts: 33
Mein Auto: '07 X3, '92 MR2 Turbo
Running much better

Well, I've been having some slight issues with my car lately...1. Having to ALWAYS crank it at least twice, sometimes three or four times before it stays cranked (when cold) 2. Would often die when coming to a stop. 3. The infamous transmission issue. 4. Squeaking belt/pulley
Had Advance Auto check the codes for me and I had 4 codes:
P0597 - thermostat heater control circuit open
P0171 - bank 2, system 2, lean
P0175 - bank 2, system 2, rich
P0303 - cylinder 3 misfire
Bought a thermostat, belt drive kit, 6 coils and spark plugs, and had my mechanic install them ($150, including the BMW blue coolant). He also cleaned my throttle body, and while doing so, discovered that my air intake connected to the MAF was loose, probably 'causing the motor to suck in additional air? Car ran great, but while stopped at Chic-fil-A on the way home, the draincock on bottom of the radiator blew out, and sent my coolant all over the parking lot. Called my mechanic, he came out and reinstalled the draincock (sorta - he stuck it back in, then zip-tied it in place as a temporary fix, until he could order me a new one). Got the part in yesterday, he installed it today, and everything is now fixed! The infamous transmission issue I thought I had going on was actually my engine acting up (mechanic says that the loose air intake was probably the cause of most of my driveability issues). Car runs smooth as silk now, no hesitation, nothing!
Just thought I'd share!

Last edited by tonyjh63; 12-23-2016 at 08:40 PM.
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