flopsymahalia Posted May 26, 2008 Report Share Posted May 26, 2008 2004 Deville 74,000 miles I'm getting P0171 (Fuel Trim System Lean bank 1) and P0174 (Fuel Trim System Lean bank 2) codes. I can feel the car "sputtering" and I assume it's about these codes. My question: What is involved in having this repaired, mainly in terms of cost? Is this something I should take only to a Cadillac service center, or can another mechanic fix this for less money? Code B0429 (Temp Control #3 Rear Circuit Range/Performance) is also recurring. I read (here, I think) that it's possibly about a crimped hose. I recently had the battery changed, which involved removing the back seat. Is this cable/hose something that I'd be able to easily see if I removed the back seat? If so, then I'm guessing I could "uncrimp" it myself. Yes? Thanks for reading and for your expert responses! Allen Link to comment Share on other sites More sharing options...
Logan Posted May 26, 2008 Report Share Posted May 26, 2008 There all going to do it sooner or latter. There is a rubber intake plenum between the water crossover and the intake manifold. These develop cracks in the rubber folds, typically on the bottom where engine deposits can collect. About a $20 part. But the intake has to come off to replace. Spray some carb/brake cleaner around this boot. Bet you find a leak.. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
Ranger Posted May 26, 2008 Report Share Posted May 26, 2008 B0429 is for the rear temperature control actuator. It is on or near the blower motor and is a pretty common DTC. It just means that the air mix door is not exactly in the commanded position.It may not even be enough to notice. Link to comment Share on other sites More sharing options...
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