Car has always been serviced, was told I am looking at either a fuel pump or engine management system, with a cost between $1500-$2500.
When was the last time the fuel filter was replaced? If the fuel filter is clogged, it will run, then lose power and finally stop as fuel flow restriction increases due to dirty fuel filter. Get a 2nd opinion from another shop. "Engine management system" means he wants to replace the ECM (electronic control module, or computer brain), which usually last over 500k miles unless it suffered water damage because the vehicle had been submerged in flood waters. If your Hyundai Imax was regularly serviced, did the shop follow factory maintenance schedule, which includes replacing key components (like the fuel filter) after certain miles are reached on the odometer??
Is there black exhaust smoke same time as lost of HP?? Then dirty fuel injectors can cause lost of HP and increased exhaust as injectors fail to properly atomize the fuel. Ask "whats the factory maintenance schedule for a Hyundai Imax?" If they can't show a factory recommended service schedule list, IMO you're getting scammed and exploited of your lack of mechanical knowledge. Did the "check engine" light came on before you had these problems? The sensors are suppose to warn you before major problems come up. Unless, someone disabled the sensors in the past, or reprogrammed the ECM to ignore the sensors and not to light up "check engine" light on instrument console. Had you always gone to the same shop? Look at your past receipts in the last 3 or 4 years and see if the factory recommended schedule had been followed by the shop. That's why its called "preventive maintenance," to avoid huge repair bills in the future like you're now experiencing. Regular service is useless if the key components are not replaced on the factory service schedule list.
Check air lines for hissing if you find a hissing sound fix it, idling problem can be the idle control valve needs cleaning out. losing power can be the fuel pressure regulator. if the fuel regulator is playing up it will be rough idling and loss of power. and a air leak in the line can make the regulator not work 100%..
Have the fault codes read to check for sensor faults . Go somewhere else to get the job done as I feel you are being touched in the wallet.
SOURCE: Engine stops while driving & engine revs high between gear change
hi i am dieter
im dave
here is something to try
keep some cold water with you and the next time it happens very quickly get out and pour the water on the crankshaft sensor then restart. If it starts right away without the usual two minutes than you will need to change this sensor. The sensor is easy to find you will see a wiring harness around the crankshaft pulley(the large one at the bottom the basically runs all your accessories like the p/s pump, alternator, water pump). Try to famaliarize yourself as to the location of the sensor first so that you can try to restart it within about 30 seconds.
SOURCE: A6 engine ''deep rattling'' noise
go to scottykilmer.com - i use this guy a lot - you just have to sign in - first name only! or whatever you want to call yourself. it is 100 percent free and he is an expert on all cars - you can expect an answer within an hour or so! this guy knows more than one person should know - trust me - no fee for free info? cant go wrong
SOURCE: rough idel/no power
As a former Audi technician, I can pretty much guarantee the coil packs are your problem.
SOURCE: whistling noise in engine and rough idle
check all vacuum hoses,sounds like a leak, try spraying carb cleaner near noise,if engine rpms go up you found the leak
SOURCE: audi tt 180 quattro car wont start. EPC and E-M system lights on
I would suggest you check oil levels etc. Generally these cars suffer from the air mass meter / air sensor problems aswell as coil problems too. Did you ever get a solution to the problem?
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