what can cause my rpm's to drop at a stoplight?

Asked by Jul 29, 2014 at 09:05 AM about the 2003 Nissan Sentra SE-R

Question type: Maintenance & Repair

while at a stop sign or stoplight my rpm's on my 2003 Nissan Sentra SER drop below 500rpm's. If i drive without the ac on it does not happen only when i have the ac on. What can be causing this?

3 Answers

34,575

The A.C. sensor is not working. The A.C. is putting a load on the engine and the rpm is dropping.

1 of 1 people found this helpful.

thank you

96,695

Idle speed control could have also failed, do you have a check engine light on?

1 of 1 people found this helpful.

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