what would a bad map sensor do to a 02 saturn sl five speed

Brittany Tackett
0

Asked by Mar 21, 2013 at 09:14 PM about the 2002 Saturn S-Series 4 Dr SL Sedan

Question type: Maintenance & Repair

my car wont go over 4,000 rpm

3 Answers

DavidH25
Not Active

Your engine’s Manifold Absolute Pressure (MAP) sensor could be the culprit if you're still getting lousy gas mileage after a tune up. A MAP sensor continually compares atmospheric absolute pressure to the intake manifold vacuum and sends the appropriate voltage signal to the vehicle’s computer. The computer then decides whether to increase or decrease fuel supply to the engine and adjust spark advancement accordingly. A bad MAP sensor sending the wrong signal to the computer can disrupt fuel consumption and overall engine performance.

4 out of 4 people think this is helpful.
Luke Wozniak
425

it will not go above 4000 rpm in neutral? or is this when accelerating?

1 out of 1 people think this is helpful.
Alex Nazarian
1,215

4k is the standing rev limiter under 5mph. Sometime if youre getting a p0341("cam sensor") code, it wont rev past 4 grand.

1 out of 1 people think this is helpful.

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