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1998 Kia Sportage 4X4: Engine Issues!!!!
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aqualls2206
New User
Dec 9, 2007, 1:49 PM
Post #1 of 2
(1218 views)
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1998 Kia Sportage 4X4: Engine Issues!!!!
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Ok I have a serious issue I can not figure out! I'm from Arkansas and its understandable that when it's cold outside a car will have the tendency to lag a little in horse power till they warm up. Ok well When I start the car in the morning and let it warm up I back down my drive and press the brake it takes my entire weight to stop the vehicle. Every time I try to back out the brake does this. That's not all!! When I come to a complete stop then try and go again it feels as though gas is not getting delivered. My car rolls forward VERY SLOWLY which in turn makes me a danger to other drivers. The other day I got off the interstate and when I got to the stop sign to turn left I pressed the gas and NOTHING!!!! It rolled in the middle of the road and I almost got hit by both lanes of traffic. Then after 5-7 seconds of this stall the gas finally delivers and it shoved me forward so hard that I almost it the wall!! THAT'S NOT ALL!!! When I am on the interstate I have to FORCE the Kia to shift so it will go faster. It has no chance of maintaining speed, It will stop accelerating at 45, 65, & 75 MPH. I have to force it to shift to keep going faster or even the speed limit. THAT'S NOT ALL!! When I go up the smallest of hills I loss 5-15 MPH (depending on height of climb). PLEASE HELP!! I am desperate! I don't have the money to keep putting into this and I don't have the money to buy a new vehicle! I have gotten a new catalytic converter, new timing belt, completely new exhaust system, new exhaust manifold and O2 sensor, even new tires to improve gas mileage but NOTHING has worked!! Next we are going to try replacing all the filters! But any suggestions will be greatly appreciated!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 9, 2007, 2:13 PM
Post #2 of 2
(1212 views)
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Re: 1998 Kia Sportage 4X4: Engine Issues!!!!
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the connection here is the brakes! This should use engine vacuum for the power boost and I suspect there is a problem there. This would cause the brakes to need much extra force to stop and any leak would throw off the engine performance.
Take a look behind the master cylinder for a round thing - that's the booster. Follow the vacuum hose from it to the engine and see if that looks good and is in place. There should be like an elbow check valve at the booster where the hose attaches and that could be bad/cracked - who knows. If you plug this vacuum source off as just a test the engine will probably run well and have full power. Remember this is just to test as you won't have power assist for the brakes. They are NOT very good without the power assist but should still work but with extreme force. That's not too safe so if you try that do it completely out of harms way like an empty parking lot (ya right - this time of year!) or you may just notice with it still.
It could be the booster itself if everything else looks good.
This is the likely problem from what you described,
T
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