martha_winkler1

Trafic Manifold Pressure Sensor Issue

Hi, I have a 2004 Renault Trafic with a gasoline engine. Recently, the check engine light came on. I've noticed reduced engine power, poor engine response, and higher fuel consumption. I suspect a faulty manifold pressure sensor, possibly due to a vacuum leak. Any thoughts?

4 comment(s)

I also drive a Trafic. I had similar symptoms a while back. Did you check for any obvious cracks or disconnections in the intake manifold area? A large vacuum leak can definitely throw off the MAP sensor readings and cause those issues.

Thanks for the tip. I visually inspected the intake manifold and vacuum lines, but didn't spot anything obvious. How did you pinpoint the vacuum leak on your Trafic?

Well, I couldn't pinpoint the leak myself. I took it to a workshop, and they used a smoke machine to find a small crack in one of the hoses connected to the intake manifold. Apparently, it was enough to cause the engine to run poorly. The repair cost me 235€

Alright, thanks for sharing your experience. I'll probably take it to a workshop then. Turns out it was a faulty manifold pressure sensor and they found a large vacuum leakage, just like you said. Replacing the sensor fixed it.

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