Car suddenly slowing down?

Question

Lately I have been dealing with an annoying problem on my car, It´s a 1992 Corvette, after a while of being driving it, suddenly it slows down like losing power, it´s the same way that happens when you turn on the Air conditioner and feel like slowing down a bit. However this happens without using the A/C or any other electrical stuff. What could be causing this and how do I fix it? might be electrical related?

Answer 1

check your fuel pressure...fuel pump may be shot!

good luck!

Answer 2

It might be a fuel filter.  As the filter gets clogged, fuel has trouble keeping flow to the engine.  The fix is to replace the filter.  

Answer 3

sounds liek there may be blockage in the fuel line some place... maybe the reason the aircon pulls more power could be  because not enough spark in running through your alternator ...slowing the motor down...hmm.... check your fuel fiter, or another alternative throw some injector/fuel cleaner into your gas tank and see how that goes, then replace the fuel filter....should be all good then...if not definetly alternator

Answer 4

also your catalytic converter may be stopping up.

Answer 5

check air filter and coolant. also tune up if needed.

Answer 6

A fuel filter _could_ cause those symptoms, but generally that happens at freeway speeds, and it happens very soon after getting up to speed.   It will also present itself when climbing a hill, even at less that freeway speeds.   Anything that demands a lot of fuel flow for more than 30 seconds or so would reveal a clogged fuel filter.   But generally a fuel starved engine doesn't run smoothly - I would expect some random misfiring as the mixture leaned out to the point it won't burn very well.   The loss of power slows the vehicle down to the point where the fuel supply it's getting is adequate to keep teh engine lit.

Now I've heard of newly built or rebuilt engines doing that, but in those cases the builder didn't properly clearance the pistons and they were expanding and binding in the cylinders when the engine warmed up.

An overheating engine can also lose power, so keep an eye on the temperature guage.

Another cause of an engine "slowing down" after "a while" is insufficient oil supply to the cylinder walls.   I assume you've checked your oil....  right?   :-)