With the ls3 engine general motors introduced a bosch map sensor in the same location as the ls2 manifold but with an attaching bolt.
Ls1 map sensor location.
This map sensor is mounted directly to the intake manifold but others might be connected by a hose.
Under or near the throttle body.
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While electronically compatible with the ls1 ls6 ls2 map sensor the ls3 map sensor is not a direct fit to the early intake manifolds uses a different harness connector and its pin configuration is unique.
When at rest the map sensor reads atmospheric pressure at sea level 29 93 in.
This video is just me taking off the wiring and taking note of the sensors around the ls1 engine.
The ecm uses map sensor data to run crucial calculations such as engine load fuel injector pulse and spark advance.
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This is perhaps the most common place.
Benji jerew flickr cc by 2 0.
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Get it as soon as wed oct 7.
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Map sensor sorry took so long but it does sound the same n i back fire all the time now still cannot locate that sensor.
Ive bought 2 different mass air flow sensors replaced all my 02 sensors n now its still giving me map sensor but now also all my 02 sensors again lol so thinking about taking it to the dealer now.