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laurawalter79

Safrane Jerking Whistling Hissing

Hi, I'm having some trouble with my 2000 Renault Safrane, diesel engine, 215713 km on the clock. The check engine light is on, and the car is jerking when I accelerate. I'm also hearing a whistling noise and a loud hissing when accelerating. Sometimes the engine even stalls at idle. Fuel consumption has gone up, and the engine power feels reduced. I suspect a bad boost pressure sensor. I've checked the cable and plug connection, but they seem fine. Any ideas?

Summary of the thread

The 2000 Renault Safrane was experiencing jerking during acceleration, a whistling noise, hissing sounds, increased fuel consumption, reduced engine power, and occasional stalling at idle, with the check engine light on. The initial suspicion was a bad boost pressure sensor, but the cable and plug connections appeared fine. A suggestion was made to check for intake manifold leaks, as they could cause similar symptoms. Ultimately, the issue was resolved by replacing a defective boost pressure sensor cable, restoring the car's performance.

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4 comment(s)

isabella_becker7

Sounds familiar. I had similar symptoms with my Renault Safrane. Have you checked the intake manifold for leaks?

laurawalter79 (community.author)

Thanks for the tip! I haven't checked the intake manifold itself, just the sensor connections. Could a leak there really cause all those issues?

isabella_becker7

Yes, definitely. A leak there affects the boost pressure, which would explain the symptoms. To be honest, it's probably best to take it to a workshop. They'll be able to diagnose it properly.

laurawalter79 (community.author)

Thanks for the advice! I took it to a workshop, and it turned out to be a defective boost pressure sensor cable. They replaced it, and now it runs like a champ again. Repair cost me 95€.

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RENAULT

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SAFRANE