Question about 2002 Kia Sportage

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Engin missing, really terrible fuel milage vehicle jerks when acclerating

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Try tuning it up

Posted on Jun 04, 2009


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How come while driving my transmission sometime jerks?

interesting, ricky ? could b anything. fuel filter needs changed, the fuel we use today is garbage, ethanol is bad for our older engines. add some of that new dirt to tank, something360. ??? also, maybe a wire connection is loose., or bad spark plug wires? something is missing its continuity , making the engine miss, not your transmission, u hope ? start with checking your battery conn., clean, tight, etc., replace plug wires, change spark plugs, maybe ? but your plug wires could b the problem. ??? think about it, engine starts ok, its when its running does the problem come up. you have fuel, you need spark, you also need clean air .......... change air filter....... pcv valve......egr valve ?? could b sticking treat yourself good, yes? treat your engine good...whens last time the transmission fluid and filter was changed ??? that could also cause a miss, a surge......yes? i hope this helps you ricky, just use common sence, it always serves me well, good luck, ken

May 14, 2014 | 1999 GMC Suburban

2 Answers

Car starts hesitating and jerking

I suspect the fuel level sensor is wrong and you are really starting to run out of gas. The other reason would be a broken tank baffle that keeps fuel around the inlet to the electric fuel pump inside the fuel tank.

Apr 09, 2012 | Cars & Trucks

1 Answer

Car randomly jerking when acclerating

It sounds like its a coilpack. Its hard to say whick one, but it can have hot fire running slow. Then when the demand go's up and running faster it fails. So it might be a little expensive but I would go ahead and replace all of em. Prob lesss than 100 tho.

May 11, 2010 | 1999 Mercury Cougar

1 Answer

What is an egr valve and does it really effect gas milage? I get terrible gas milage. We have had it hooked up to a computer and it was the egr code. My electronic milage gauge above my rear view mirror...

An egr does nothing good for your car or mileage. However it does quite a bit for the environment. It takes some gases (I can't remember the exact name) from your exhaust and puts it back in the intake so it would be reburned. This doesn't help or really hurt the engine but it makes your exhaust less polluting.


Apr 21, 2010 | 2005 Dodge Grand Caravan

1 Answer

Bad fuel milage!.

Perform fuel injector check, check the Air filter, clean MAF sensor with the MAF sensor cleaner.Dirt sometimes accumulate on the sensor and that could cause for poor mileage.Before changing your engine oil
clean fuel injectors and sludge from the engine using 3 oz pure acetone and 2 oz xylene on 10 gallons of the fuel. Drive vehicle and then change your oil. You will notice a lot of sludge coming out of the pan. After draining oil, remove pan and gasket and clean with solvents and dry with the compressed air. DO NOT clean with the rag because that can contaminate your engine and oil.

Feb 21, 2010 | 1991 Ford F150

1 Answer

Engine starts very hard. Misses and sputters badly when I try to acclerate. I can get it to go by pushing very lightly on the accelerator. Seems to work slightly better when warm. Any ideas? TIA

hi when was the last tim the vehicle had a service? could just be that it needs new spark plugs,fuel filter could be slightly blocked i would start with a general service first

Nov 29, 2009 | 1991 Mercury Capri

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