Runs rough, just tuned up, new coils, plugs, wires, new Throttle Position Sensor. Just barely starts now, will not accelerate. Running even...

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Customer

Runs rough, just tuned up, new coils, plugs, wires, new Throttle Position Sensor. Just barely starts now, will not accelerate. Running even rougher now at Idle, won't go above idle.

Last updated
Relly De Jesus
Kia Mechanic

Hello and welcome to ExpertHelp.com! My name is Relly De Jesus and I'm going to do everything in my power to answer your question to your full satisfaction!

Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We are not associated with KIA nor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started! :)

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Posted
Relly De Jesus
Kia Mechanic

Hello Lawrence

How are you doing? May I ask the year and model of your KIA? I'll be standing by for your response.

Thank you

Relly

Posted
Customer

It's a2005 Amanti;  it had overheated several weeks ago due to a radiator failure; had to nurse it off the highway due to nowhere to pull over.  Towed to local garage.  Several computer codes, mostly 'misfires'.  Replaced radiator and the intake manifold as the plastic intake guides were broken.  Replaced crankshaft sensor and Throttle Position Sensor (along with tune-up and coils/wires).  Before overheating it had been running great even with 213,000 miles...

Even after being 'fixed' never ran well, now barely if at all.....undriveable....

Thanx for your help

 

Posted
Relly De Jesus
Kia Mechanic

Hello Lawrence

How are you doing? Is there anything else I can add or help you with? I'll be standing by for your response. Have a good one!

Thank you!

Relly

 

Posted
Customer

Have'nt run compression test (yet).  When I picked it up after the new Throttle Position Sensor was installed it ran generally OK, but got worse, then wouldn't start.  Finally got iy to run but wouldn't accelerate over 2400 RPM;  gas pedal had no effect.  If the engine was ruined, I don't think it would have run well at all for a time.  Can hear an 'forward' exhaust sound (maybe a bad catalytic converter??)....Have read where the electronic connector(s) at TPS or Accelerator Pedal Sensor get corroded............

Posted
Relly De Jesus
Kia Mechanic

Hello Lawrence

Good to hear back from you. Please do check the connectors and run a compression test if necessary. Cars running on ecu tends to run fine on the first start but when it relearns the issue will come back. Please keep me posted.

Thank you

Relly

Posted
Customer

If I end up replacing the ECU I hear that it must be 'reprogrammed' for my car.  How is that done and can I do it myself?..I don't want to start taking things apart for a compression test, as it was running OK for a while;  if the engine was that bad it wouldn't have run well for a time.  I'm still thinking the cat converter is somehow involved.

Posted
Relly De Jesus
Kia Mechanic

Hello Lawrence

You can have it reprogrammed by a tuning shop near you or you may purchase a third party tuning device. For peace of mind I suggest that you replace the cat converter as well. Ill be standing by.

Thank you

Relly

Posted
Relly De Jesus
Kia Mechanic

Hi Lawrence

Hope everything is well. Any update on the vehicle? I'll be standing by for your response.

Have a good one!

Thank you

Relly

Posted
Customer

Hi,

 

No, I haven't had a chance to work on the Amanti...........I'll keep you posted........larry C

Posted
Relly De Jesus
Kia Mechanic

Hello Lawrence

How are you doing? Any update on the car? I'll be standing by for your response.

Have a good one!

Relly

Posted
Customer

I haven't been able to get to the car with the weather.  I spoke to my mechanic and will probably have it towed there when the upcoming snowstorm clears up...

Larry C.

Posted
Customer

Haven't had a chance to work on the car due to the weather

Posted
Relly De Jesus
Kia Mechanic

Alrighty Lawrence. Hope everything ends well. Have a good one!

Posted
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