Loss of power and poor performance (2.5)

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Aug 1, 2013 | 04:22 AM

0x61

Thread Starter

Junior Member

Joined: Jun 2013

Posts: 3

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From: Belgium

Loss of power and poor performance (2.5)

Hey guys,

I'm having some serious trouble with my car. I can't get over 160km/h. The car is revving up untill maximum though. What I do notice is that, when you get let's say 120km/h and you're giving full gas the car doesn't increase in speed for a second then it does speed up and then again it's stops for a second and speeds up later. It seems like it's leaking air somewhere.

The car has LPG on it, however both on gas or gasoline it remains the same.

I don't have the 'Limited engine performance' notification and it did a OBD scan myself. Here are the results:

Code:

P0191: Fuel rail pressure sensor circuit range/performance
P0430: Catalyst system efficiency below threshold
P1549: Variable induction system 1 low/high input/intake manifold communication control A circuit malfunction

It would be amazing if you guys could clear something up as I don't really understand what these codes exactly tell me.

Thanks in advance

Aug 1, 2013 | 08:59 AM

JagV8

Veteran Member

Joined: May 2009

Posts: 27,519

Likes: 4,910

From: Yorkshire, England

Clear them and see if they come back. Does your OBD tool have "live data"? If so, look at LTFTs (see my sig) warmed up at idle & about 2500rpm (in P or N).

When you have more posts you can grab the free JTIS and codes PDF. They have details of the codes and the known causes.