Question about 2005 Kia Carens 2.0

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Car's performance is sluggish

As if car is Heavily loaded with weight

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Check and/or replace air filter, spark plugs, fuel filter. When was the last time it was serviced?

Posted on Oct 30, 2012


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How many miles will I get to the gallon in a 2.5litre diesel van engine

Use 25mpg as a rough estimate.

Vans are intended to carry heavier loads and are therefore lower geared than cars. If you have a large van which is heavily laden your mpg may be 18-20 mpg.

Much depends on the size of your van and the weight of whatever you are carrying in it.

A small car sized van of about 1900cc would probably do 35mpg+

A bigger van has more wind resistance and lower gearing. However, a diesel van is your best option

Mar 25, 2016 | Cars & Trucks

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What is high performance

According to How Stuff Works, a car is considered to be "high performance" if it has a lot of power relative to the weight of the car. High performance usually means the car goes FAST.

Mar 03, 2015 | Cars & Trucks

1 Answer

Car shakes, thumps and feels sluggish but idles fine.

Im betting it may be a crankshaft position sensor thats on the way out. Most of the time vehicles will idle and start ok but under any load will spit, sputter, and have no power.

May 14, 2017 | 2003 Chevrolet Malibu

1 Answer

V6 96 camry sluggish performance when cold,as soon as engine up to temp performance good.

clean the throttle body . that will cause sluggish starts,, you may want to get the codes read to make sure its not a o2 sensor, check around there are many places that will do the OBD code check for free,, once you get the codes post them on here and people will assist you with what they mean, if you reply to this feed I'll help you ,

Sep 11, 2011 | Toyota Camry Cars & Trucks

1 Answer

When driving sometime my grad prix 2003 hesitate - specially going up in a hill ' Can you tell me what is the problem with my car?

Your knock sensor is the probable cause. When the knock sensor starts to malfunction, it can cause sluggish performance especially when the car is under a load (such as going up a hill). This is caused by the knock sensor constantly retarding the timing. Hope this helps.

Jun 15, 2011 | Pontiac Grand Prix Cars & Trucks

1 Answer



Timing belts are a critical component and the cost of replacement shouldn't really be means tested against the cost of the car, so if the garage is absolutely sure thats what the problem is then it is definitely worth getting it done without a shadow of a doubt.

As far as the overheating in traffic is concerned, is the cooling fan kicking in? If not then maybe the thermoswitch needs replacing.

Depending on the age of the vehicle (pre or post 1996), it could be fitted with an inercooler, and once again, age dependant, it could be fitted witha MAF sensor.

A blockage or leak in the intercooler or its hoses could cause sluggishness and overheating. Check that the hoses aren't clogged with oil. There will be oil in there, thats normal, but it shouldn't be so much that its narrowing the hoses. A blocked intercooler is a bit more difficult for the layman to diagnose without actually fitting another one.

A fault with the MAF sensor could cause sluggishness. Disconnect the wiring plug and see what happens. If power is restored then the MAF is dirty or faulty. It can be cleaned by removing it and then spraying brake cleaner or switch cleaner onto the hotwire hanging down inside it, and then gently blowing it dry with your breath, but don't physically touch the wire with anything, just spray it and blow on it.

An intake system air leak can also cause sluggish performance and overheating on MAF equipped engines, because it will allow unmetered air into the intake which the MAF doesn't know about and therefor underfuelling ensues, which will cause sluggish performance, and if severe enough, overheating.

There is a solenoid on the side of the fuel pump which is a known cause of sluggish performance on these engines when it fails, which can only really be tested by either fitting another one or using relevant test equipment.

If the wastegate actuator spring has weakened then the wastegate will open way too soon and the result will be no boost and therefor sluggish performance. To check for this, simply pull the vacuum pipe from the back of the wastegate actuator and plug it so it doesn't lose any boost into the engine bay, and then very carefully drive the car and see if it performs any better, but don't use full throttle in case you over boost it because the wastegate will open too late with the pipe removed.

I think I've given you enough to keep you busy for a while!!



Jun 18, 2008 | 1996 Ford Escort 4 Door

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