struggle starting in cold

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Jan 12, 2017 | 06:20 AM

#11

aradmahogany

Senior Member

Joined: 09-16-2013

Posts: 1,408

From: Tampa, Florida

And make sure you DO NOT use Throttle Body cleaner on the MAF, you must use MAF specific cleaner!

Jan 12, 2017 | 08:45 AM

#12

BDR1973

Thread Starter

Senior Member

Joined: 01-07-2016

Posts: 112

From: Ashland City, tn

MAF has been cleaned also. I will check the connection pigtail this weekend or during lunch today.

Jan 12, 2017 | 10:36 AM

#13

Oldblue

Administrator

Joined: 10-13-2011

Posts: 40,097

From: Welland,Ont Canada

So, clean them again! If done correctly it can't hurt!

Jan 20, 2017 | 09:58 AM

#14

malibuhhr

Member

Joined: 02-14-2011

Posts: 30

From: Montreal

in the OP he describes an intermittent electrical issue that sounds a lot like a burned relay. Swap relays and try it again. After ten years these things wear out.

Jan 20, 2017 | 02:55 PM

#15

Don06

Senior Member

Joined: 04-14-2010

Posts: 432

From: Wisconsin

Quote:

Originally Posted by BDR1973

I have a 2010 LT with about 137,000 miles on it. The last three times i started it in the morning ( temps where between 15 and 8 degrees). The car would turn over and try to start and sometimes when it did start it stalled right away. When it was running at first, the car would shake and it seemed like it was starving for fuel. Once it cleared up, it ran fine. Battery is about a year old. Did not start it this morning, drove truck in this time. There are no engine codes at this time either.

Try turning the key to on for 7 seconds. Shut it off. Then try to start it. The fuel pump runs for a set time with the key in the on position and continues to run when the engine oil pressure rises. If it starts with this method you might have an injector leaking or a rusted fuel line. A leaking injector will cause it to run rich so it could cause both problems.

Feb 8, 2017 | 02:01 PM

#16

BDR1973

Thread Starter

Senior Member

Joined: 01-07-2016

Posts: 112

From: Ashland City, tn

Don06: during some cold days, turning the key on for 7 seconds seemed to work.

Feb 8, 2017 | 04:47 PM

#17

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,543

From: Fredericksburg,VA

Fuel pump or EVAP purge valve (the one under the hood). The fuel pump needs to checked for PSI and leakdown. The EVAP purge valve can be checked by disconnecting the tubes to it and the connector and blowing into it; closed good, open bad.