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lisaberger54

Interstar power loss rough running

I'm having a weird problem with my 2003 Nissan Interstar diesel. It's lost power, runs rough, and jerks when I accelerate. There's a loud hissing noise when I put my foot down, and I'm burning more fuel. It could be an air intake leak. The engine light is on, but I don't have a code reader. Any ideas?

4 comment(s)

willi_beck72

Sounds familiar! I had a similar issue with my Interstar, felt like driving a tractor! The intake system can be a real pain. Did you check the intake manifold flap control? It might be defective.

lisaberger54 (Author)

The intake manifold flap control? Where exactly is that, and what does it do? Can I fix it myself, or should I take it to a mechanic?

willi_beck72

I wouldn't mess with it yourself unless you really know your way around an engine. Mine was doing the same, rough running and all. Turned out the switch was shot, like a dodgy light switch that controls the air flow. Get it checked out by a pro, trust me. You could end up making things worse!

lisaberger54 (Author)

I appreciate the advice. I went to the workshop, and it was indeed the intake manifold flap control, just as you said! It cost me about 465€ to get it sorted, but at least she's running smoothly again!

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