Main IndexAuto Repair Home Search Posts SEARCH
Who's Online WHO'S
Log in LOG

Car has no power! help.

  Email This Post

Anonymous Poster

Mar 20, 2009, 1:20 PM

Post #1 of 3 (2174 views)
Car has no power! help. Sign In

I have a 1993 Chevy Corsica with a 3.1 V6 with about 140k miles on it. A bit ago my car started acting funny in that it would have little power and then jump to full power and back to nothing again and have a rough idle at stop signs. Sounded like my TPS was goin bad and so I replaced it and replaced the gaskets on the throttle body because they were crap too. Well it seemed to help a bit but my car is now doing it all again. When in gear my car has a small shake like a rough idle would produce but out of gear it does nothing. It idles very well out of gear and sounds fine. There are no error codes in my car either. When I accelerate it feels like i have 1/3 of the power I should have and sometimes I will have 100% power like a brand new car. Today I punched it to the floor and although the RPMs seemed to go as high as they should in each gear it took me over 15 seconds to get to 60MPH! This has become dangerous when pulling out of driveways or on roads because I don't know when it will do this and when it won't. It will switch in and out of fine and crap modes even while im driving. Somedays its good somedays its bad. I have no idea what the problem is or where to look now.
Here are things ive either replaced or eliminated as potential problems so far: TPS, idle air/throttle body gaskets, fuel filter, spark plugs, air filter, and all fluid levels, TCC(for the bad ingear idle when stopping). I even put some injector cleaner the other day. Anyone have any ideas?

When the problem comes on or goes away while im driving it is like a flip of the switch and the car jerks from the boost of power that it should always have. Even if I hand shift each gear I don't have very much power in any gear.

Any ideas?

Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Mar 20, 2009, 3:46 PM

Post #2 of 3 (2167 views)
Re: Car has no power! help. [In reply to] Sign In

May be way off base, but you may want to check for restricted exhaust? Sometimes, a catalytic converter will 'break' up, internally, and temporarily block off the exit causing a severe loss of power. The chunk of cat will fall away and then be fine. Just a guess.
SW Washington

Anonymous Poster

Apr 4, 2009, 12:12 AM

Post #3 of 3 (2144 views)
Re: Car has no power! help. [In reply to] Sign In

I had a car like yours and it turned out to be a bad o2 sensor. or it could be a egr valve. oh if you have a bad plenum gasket it could be sucking air in or even a bad vacuum line could do it to

Car has no power! help.

  Email This Post

Latest Forum Post

Car has 82K miles. Took both wheels off and found the inner brake pad of both fr...

Hi every one, I have recently done a radiator flush & refill on my 1989 Toyo...

My 2004 Grand Am has been having problems starting up for a while now, but it wa...

Mondeo Mk4 1.8 TDCi 2007 My aircon has been less than satisfactory for a very ...

Hi, First time poster to the forum, so hello everyone! I have a 2007 Ford focu...

I just had my 1989 4wd Jimmy s15 aligned. They said the only thing that needed ...

Feed Button

Automotive Forum Categories
AC Auto Repair
Auto Body Repair
Auto Insurance
Automotive Repair
Automotive Wiring
Automotive World
Brake Systems
Car Care Tips
Car Racing
Car Shows and Events
Car Stereo Repair
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair
Gasoline and Motor Oils
General Discussions
Motor Vehicle Inspection
Motorcycle ATV Repairs
Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Repair
Motorcycle Seat Repair
Remote Control Cars
Steering and Suspension
The Bargin Bin
Traffic Ticket Help
Tricks of the Trade
Truck Repair
Truck Repair Advice
Truck Engine Repair
Truck Suspension Repair
Car Forum - Sitemap

Search for (options) Privacy

web statistics