Run rich at cold start only for 1 or 2 min Black smoke,missfire and engine stall
What is your question?
It's append every cold start , I thing it's the MAF sensor because the air flow read 27g/s at idle !!! After 1 or 2 min the air flow readin begins to drop and the truck begin to run fine !!! The air flow drop beetwen 5 and 7 g/s .
1 Reply
Similar Questions
See more 2009 Cadillac Escalade EXT QuestionsWhat are the best Cadillac repair shops?
RepairPal Certified shops can diagnose and repair your 2009 Cadillac Escalade EXT. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Tuffy Tire & Auto Service Center - Grandview
1524 W 5th Ave
Columbus, OH
Open
Closes 5:00 PM
Excite Auto Repair & Towing
3430 Westerville Road
Columbus, OH
Open
Closes 6:00 PM
All In Auto Service
5200 Fisher Road
Columbus, OH
Open
Closes 6:00 PM
Tuffy Tire & Auto Service - Grove City
2131 Stringtown Rd
Grove City, OH
Open
Closes 6:00 PM
Blackstone Complete Auto Care
4800 Sinclair Road
Columbus, OH
Open
Closes 6:00 PM
Boyd's Tire & Service - Columbus
5263 Godown Rd
Columbus, OH
Open
Closes 6:00 PM
Tuffy Tire & Auto Service Center - Grandview
1524 W 5th Ave
Columbus, OH
Open
Closes 5:00 PM
Excite Auto Repair & Towing
3430 Westerville Road
Columbus, OH
Open
Closes 6:00 PM
All In Auto Service
5200 Fisher Road
Columbus, OH
Open
Closes 6:00 PM
P0172 and p0175 , fuel system rich bank 1and 2 Mil on only 1 time in two weeks !
TRY CLEANING MASS AIR FLOW WITH PROPER CLEANER AND MAKE SURE THERE ARE NO AIR LEAKS IN FRT ON THE SENSOR.IS THE AIR FILTER CLEAN?
Everything was done ,brand new air filter and maf was cleaned with maf cleaner !! I'm realy confused because the trouble was only for the 2 first minutes on cold start
READ LIVE DATA WITH A SCANNER TO MAKE SURE ITS RUNNING RICH STILL
Fuel trim long term it's -30 And and the snow was black 2 feet long behind de truck !!
ARE THE O2'S READING OK.DID YOU BUY A NEW DELCO MASS AIR FLOW SENSOR OR REBUILT?
O2 works great and i don't buy any parts yet !!! I work for dodge dealer sinse 15 years and i'm not familiar with this system !!!
READ YOUR MASS AIR FLOW SENSOR DATA AND CK FUEL PRESSURE WITH FUEL PRESSURE REGULATOR PLUGGED INTO VAC AND UNPLUGGED.SHOULD BE APPROX A 10LB PRESSURE DIFFERENCE.IF NOT START BY REPL REGULATOR.CK TO SEE IF REGULATOR IS LEAKING FUEL ALSO
Ok ! But do you know the normal air flow spec number at cold start ?