2013 Buick Lacrosse cx Hybrid stalls at stop signs

[Rmay635703]

These 2.4 hybrids seem to be abundantly available for $1500 or so but many have issues with stalling at stops and high miles -150k+.

R

Post in thread '2013 Malibu Eco 225k no ac winter beater?'

Nov 5, 2024

I guess it's worth a gamble if it runs and drives even for 5k miles if it's 1500 bucks. That ac problem could be as easy as a pressure switch or schrader valve. I've seen someone drive for over a year without ac when they could have just jumped the low side switch with a paper clip which I did when I rode with him after first jumping the relay to check the compressor and getting cold air and he was so upset he didn't try to do anything. He assumed it'd be super expensive just to even get a diagnosis and didn't bother.

It’s unfortunately a car with a very cheaply built very...

• Rmay635703

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They usually say they need a new hybrid alternator.

How likely is it to get GM to cover this under the recall?

How likely is just throwing the part at this to actually fix it?

Once they start stalling isn’t it usually a combination of problems including oil consumption, compression, plugged egr, and the hybrid control module.

With clean sheet metal it’s tempting, many decades ago my father bought a clapped out 4 banger car (the 4 cylinders were always failed) and the mechanic was able to drop in a full v6 motor and transmission with everything left bolted together then wired it up relatively cheaply.

Not sure if that’s possible now that everything is bespoke and disposable.

 

[slacktide_bitog]

This is why I don't like auto stop/start, because you never know when it's working as intended vs an actual problem

 

[mk378]

If it's difficult to get rolling from a stop it's a hybrid problem such as the hybrid battery. A hybrid isn't supposed to run the gas engine much at all in stop and go driving.

 

[Rmay635703]

If it's difficult to get rolling from a stop it's a hybrid problem such as the hybrid battery. A hybrid isn't supposed to run the gas engine much at all in stop and go driving.

These have a specific defect that they “stall “ when they aren’t supposed to shut off the engine. Being a mild hybrid the engine needs to spin while you are moving.

This is usually during braking when the motor is supposed to keep spinning to recharge the battery

When the engine stalls it’s then hard to restart from a stop or if it stalls and you don’t fully stop you obviously can’t accelerate.