Originally Posted by CraZyDriVer868
Hey everyone i need some major help ....i noticed this happened the other day...then i didnt drive my car for a couple days then i drove it and it didnt do it for 2 days...any time the boost gets over -5 on the boost guage it like gains power then loses power....gains power...loses power...
Mine did that when the catalytic convertor clogged. If I punched the gas I'd get a little power for a second or two, but all the exhaust had nowhere to go (at least, not as fast as it wanted to) and the engine would smother itself. The excess backpressure showed on the boost gauge: you'd get a second of actual acceleration, then the car would bog down again, but the boost needle didn't really drop.
If yours is showing a higher reading than usual even though the engine performance is bad, it might be telling you that your exhaust is basically blocked by a bad convertor.