Engine Performance problem
1998 Vauxhall Astra 6 cyl Front Wheel Drive Automatic 92000 miles
Hi my 98 Astra mk3 1.6 16v has a problem with intermittent power loss.
When I lose power it is (and I say this as I always make the same journey when it happens) up hills and in the same place each time.
I have recently had the fuel filter changed and didnt have the problem for 9 days afterwards but then lost power, today the car slowed to a stop uphill, I have in the past been able to put my foot to the floor and the car works through it.
When the car develops this problem I notice a sputter from the engine but when I pull up for a few minutes usually turning the engine off and then restart the sputtering has stopped and the car runs fine.
After the 9 day period when the fault occured it happened once each way and then hasnt happened again till today, 4 days later. I have noticed that the weather has been fine and dry in the period the car has been ok, but today it has been foggy and damp, and on previous occasions it has rained.
I have thought that maybe it is an air filter problem and am tempted to have the air filter replaced for an induction kit as I planned to anyway.
Other things I have been told that could be the problem are crank/throttle position sensor and a sticking egr valve.
What are your thoughts and what would you recomend.
I must say that before the fuel filter was replaced the nature of the fault was much worse, the car could cut out if I didnt pull over and the sputtering was much worse. Also the problem seemed to intensify once id had the centre section of the exhaust system replaced and thought it would be the cat converter but I didnt think this was the problem as changing the fuel filter wouldnt effect the cat also this could just be coincidence.
It might also be worth saying I dont feel the car has as much power as it should do. The problem while I am patient is begining to try it.
Tuesday, March 17th, 2009 AT 3:22 AM