A/C blower won't shut off car stalls

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Aug 17, 2024 | 05:24 PM

#31

greg8453

Senior Member

Joined: 03-29-2022

Posts: 1,241

From: Davison MI

Quote:

Originally Posted by mallorysadie

Thank you. Just wondering if that is why I have p0171 I do know now there is no low fuel trim it is at 0%

With the lean code the trim will be +20 or so.

Aug 18, 2024 | 07:12 AM

#32

Oldblue

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Joined: 10-13-2011

Posts: 40,097

From: Welland,Ont Canada

More likely a dirty MAF sensor or broken flex pipe between the exhaust manifold and the first O2 sensor.
It could also be a cracked exhaust manifold.

https://www.obd-codes.com/p0171

Aug 18, 2024 | 10:39 AM

#33

PulpFriction

Senior Member

Joined: 12-05-2014

Posts: 3,371

From: Northern Ohio

Quote:

Originally Posted by mallorysadie

Thank you. Have you heard that you have to program new fuel injectors? Just curious that what someone told me but I'm not sure.

No need to program new fuel injectors unless they are different than the originals. Then you might need a tune.

Facts are kinda trickling out here. Did you change fuel injectors? 2.2 liter or 2.4? Miles? (Sorry if I missed something is a prior comment.)

BTW, $750 is pretty cheap for catch-up work on a car this old.

Last edited by PulpFriction; Aug 19, 2024 at 08:00 AM.

Aug 18, 2024 | 01:41 PM

#34

mallorysadie

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Joined: 07-11-2024

Posts: 17

From: California

Quote:

Originally Posted by PulpFriction

No need to program new fuel injectors unless they are different than the originals. Then you might need a tune.

Facts are kinda tricking out here. Did you change fuel injectors? 2.2 liter or 2.4? Miles? (Sorry if I missed something is a prior comment.)

BTW, $750 is pretty cheap for catch-up work on a car this old.

We did change fuel injectors they are GM it's a 2.4lt ,I've changed the MAP sensor, MAF sensor, camshaft position sensor, 02 sensor upstream, new iridium plugs, new fuel pump because the pressure was low, put new connector to MAP sensor because signal wire looked off, I found a broken wire in loom so did good check of wiring issues they look good. I just don't know what to do any suggestions would help.

Aug 18, 2024 | 02:00 PM

#35

Oldblue

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Joined: 10-13-2011

Posts: 40,097

From: Welland,Ont Canada

Did you check the exhaust manifold for a crack?
Did you check for broken flex pipe?

Aug 18, 2024 | 02:39 PM

#36

mallorysadie

Thread Starter

New Member

Joined: 07-11-2024

Posts: 17

From: California

Quote:

Originally Posted by Oldblue

Did you check the exhaust manifold for a crack?
Did you check for broken flex pipe?

Not the exhaust manifold. I will go out now to check it. But the flex pipe is ok my son checked it with smoke.

Aug 18, 2024 | 09:35 PM

#37

mallorysadie

Thread Starter

New Member

Joined: 07-11-2024

Posts: 17

From: California

Quote:

Originally Posted by Oldblue

More likely a dirty MAF sensor or broken flex pipe between the exhaust manifold and the first O2 sensor.
It could also be a cracked exhaust manifold.

https://www.obd-codes.com/p0171

No cracks on either but first 02 sensor is very black changing it now I will update in a few minutes as we are changing it now I think we should change both

Aug 19, 2024 | 12:46 AM

#38

mallorysadie

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New Member

Joined: 07-11-2024

Posts: 17

From: California

Quote:

Originally Posted by mallorysadie

I have a 2010 Chevy HHR Lt AC blower will not shut off when I turn it to the off position car keeps stalling please help
UPDATE. The switch for heater/AC was burnt so got a new one. But the car keeps throwing P0107-P0106 I've replaced both MAF & MAP Sensors but the codes come back if I put my car in reverse I'm a 62 year old and I'm not sure what to check next I can't put it in the shop I live on a fixed income in California.

I fix the car number of things went wrong after all the parts I think the connector on the MAP was the original issue with the stalling then everything else went wrong while working on it but we changed both 02 sensors which were as black as can be the car runs good no codes I drove it about 50 miles and still no codes the Traction control warning is also gone . I WANT TO THANK EVERYONE WHO HELPED!!