Code p0171

Asked by MattCarsp Nov 25, 2019 at 08:10 AM about the 2000 Lexus RX 300 AWD

Question type: Maintenance & Repair

I have a Lexus rx300 2000 and it has a code P0171. When i
stop at the light the RPM needle going crazy and the car
chock. Can anybody explain what the problem is?

1 Answer
190

Techno-mage answered 4 years ago

You mean the car sputters and wants to die when you come to a stop? This is likely a vacuum leak. You can visually inspect all the vacuum lines under the hood to maybe spot it, but you will need a cheap scan tool to narrow down the answers to your car troubles. You could try smoke tests too, but it's a lot of hassle chasing stuff down without a scanner.

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