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While driving all off a sudden while pressing the gas the engine will rev up but the car does not go faster but then will jerk and speed up, what is the problem?

No lights are on indicating something is wrong

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  • Cars & Trucks Master
  • 14,585 Answers

No year, make and model. But slipping is a transmission problem. EPC problem? could be other transmission problems. Hav erhte codes read. repost.

Posted on Nov 09, 2014

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6ya6ya
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Posted on Jan 02, 2017

Remmik
  • 56 Answers

SOURCE: car is jerking engine light is flashing and smell gas

With modern cars it is bad when the engine light just comes on and the vehicle does something very different. It should not be driven. If the car is smelling of fuel and jerking it is because it's miss-firing (i.e. one or more cylinder is not getting spark but is getting fuel). This can be anything from electrical/electronic to mechanical like a broken rotor cap (as an example). The good thing, is that the light is coming on and a mechanic can check the ECU for error codes. Alternatively, you can buy or barrow one your self and check it out on your own (I think even certain auto-part stores will check it for you as long as you get in the zone;). 1996 is a good year for that since that is when OBDII started and all vehicles started using the same port to check for issues.

Posted on Feb 17, 2009

  • 328 Answers

SOURCE: car hesitates when press gas and engine light on

could be ur transmission shift solenoid

Posted on Apr 08, 2009

  • 5495 Answers

SOURCE: Car rev up and down at startup, also car jerks at release of gas

This sounds like a vacuum control problem. Since part of the problem is when the engine is cold; a thermal switch is venting vacuum until the engine warms up enough to shut down the thermal switch, thus restoring a steady idle. Vacuum can be affecting high rpms while running too. You could have a misrouted EGR vacuum line opening the valve at the wrong time. There are sometimes hose routing decals on the radiator shroud or under the hood. These can be visibly checked.

Posted on Apr 20, 2009

  • 420 Answers

SOURCE: Chek Engine Wranig light lights, the motor's purr change, speed doesn't flowing freely.

You need to have the codes read, that will tell you exactly why it's not happy.

Posted on May 08, 2009

  • 1244 Answers

SOURCE: 2004 Hyundai Elantra GT (manual)Loosing speed/power while driving

tranny si sliiping due to worn clutch disk you will need to have it serviced / rebuilt

Posted on Jan 19, 2010

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1 Answer

Vvti avanza engine no power runs eratically after driving slowly in third gear when engine jerked


toyota avanza
if the engine light is on there are fault codes to be read
these need specific diagnostic readers

when was it last serviced
going up a hill
would suspect fuel delivery issue then spark problem


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Jun 23, 2016 | Cars & Trucks

1 Answer

04 mazda6 sedan...100000miles and engine jerks?


lets break this down ,there is a little sensor on the air intake known as the air filter [i hope you have changed] it detects the amount of air flowing into the engine.it can be faulty.2if your weather is good for a long time little rubber joints get dried up and like to make noises but sometimes its good to get them checked out,adrian

Jun 25, 2010 | 2004 Mazda 6

2 Answers

2004 Hyundai Elantra GT (manual)Loosing speed/power while driving


sounds like the clutch is worn out and requires replacement.

Jan 19, 2010 | 2004 Hyundai Elantra

3 Answers

Car rev up and down at startup, also car jerks at release of gas


There is a vacuum leak somewhere in the intake system. A very common problem on these cars is a PCV valve that gets stuck open and replacing that first is very cheap. If that doesn't solve the problem, then you'll have to go hunting. Listening very carefully for a hissing sound in the engine compartment will often lead you to a hose that is off or a gasket that has failed. You can also spray small amounts of aerosol carb cleaner at suspect areas to confirm the leak. The engine will change revs when fed the carb cleaner.

Apr 20, 2009 | 1991 Honda Accord

1 Answer

Looses power at 3500 rpm


Blocked gas filter is most noticeable at HIGH SPEEDS.

If it looses power at only 3500 or so rpm's, most likely culprit is the throttle position sensor also known as TPS.

Does ur engine burn oil? Could be low compression, but unlikely.
Could alsobe, but unlikely, the coil giving a weak spark.

Whats ur mileage and is it an automatic tranny or manual? Give more details please as to what ur car does, IE sputters, jerks, weird noises, engine revs high but car doesn't go faster, etc.

Sep 08, 2008 | 1994 Subaru Legacy Outdoor

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