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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Hyundai
Satisfied Customers: 1598
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
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2012 Hyundai Elektra. Loss of power on heavy acceleration,

Customer Question

2012 Hyundai Elektra. Loss of power on heavy acceleration, it feels like car wants to come to a stop.
Submitted: 1 month ago.
Category: Hyundai
Expert:  Chad Farhat replied 1 month ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 1 month ago.

hey how are you

is there a check engine light on ?

have you had a diagnostic scan and retrieved the fault codes ?

We need correct Fuel pressure & good Spark for the engine to run correctly ?

Do you have a test light so we can check for spark ?

Do you have fuel pressure tester to check for fuel ?

are you looking at fixing this yourself or looking to know the most possible cause of this issue and taking it to repair shop for the work ?

Do you have any prior experience in electrical troubleshooting and testing with a test light for power & ground ?

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 1 month ago.
The car runs good as long as u ease into the throttle, but when u want pass another car n u hit the throttle hard car slows down.
Expert:  Chad Farhat replied 1 month ago.

1- A weal fuel pump will cause it

2- Vacuum leak

3- Spark plugs

4- I would do a tune up first ,fuel filter & Check for vacuum leaks

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 1 month ago.
Changed spark plugs already. Scaned car got P0355 cksp sensor " A" circuit. What should the fuel pump pressure b.
Expert:  Chad Farhat replied 1 month ago.

Fuel Pressure Start the engine and measure the fuel pressure at idle. Fuel Pressure: .............. 324 - 363 kPa (3.3 - 3.7 kgf/cm2, 46.9 - 52.6 psi)

2-The P0355 is the Crank shaft sensor , if this bad , you will not have spark ,

Please let me know if you need anything else on it

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 1 month ago.
Fuel is 54# ***** test drove the car fuel pressure stayed the same. Lost the tach , don't show the rpms.Still losing power, runs great with light throttle.
Expert:  Chad Farhat replied 1 month ago.

i will need some fuel trim reading at idle to tell what it could be ,since fuel pressure is good.

and throttle body readings , when at idle and while giving gas , is the voltage at tps reading on scanner going up ?

A maf sensor, ckp, cmp ,vacuum leak ,throttle body could cause the etc

Customer: replied 1 month ago.
TPS V at idle is 4.4. Throttle up drops to 3.3v. TPS angle 1 0.6v. TPS angle 2 2.7 drugs. Fuel adaption idle0.8-1.2. Part load 6.6.
Expert:  Chad Farhat replied 1 month ago.

There throttle body not working correctly

we should see a variation from 1.2 to 4.5 on so on throttle up

so either ecm or throlte or the wiring in between

you need to start here

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 26 days ago.

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Thank You
Chad Farhat
ASE Certified Technician