Shunt fuse I was told to take out the shunt fuse for 10 mins to re-set the ecu and remove fault codes. Is this correct and where is the shunt fuse? Dave

Get it to a workshop and have them run an ECU diagnostic on it. Whatever error codes come up will determine the fault. It will save the guesswork and you throwing money at the problem. There are many potential failures or faults that could cause your Sportage to shut down (fuel pump, timing belt, ECU, relays or sensors, ignition module, fuses etc)

Hello
When you are having this faulty code P1640 Main Relay Control Circuit.

To solve this open your Engine Bay Fuse box,
look for the relay named CRI and fuse CRI ECU remove any of this fuse or relay.
Then start your car for 5 mins.
Switch off and dragonize it again.

fault code is solved.

the speedometer is more then likely due to a fauly speed sensor on the transmission, presuming your check engine light is on, try resetting ecu by removing battery cables for 5 mins, then plugging them back on battery, ensure you have radio code before doing so to avoid locking the radio if it is still the stock radio, if problem is not resolved check engine codes for possible fault shift solenoids, also ensure there is enough transmission fluid, to check turn the car on let run for 10-15 mins to warm up oil, block the wheels and place transmission in neutral and verify correct level of oil, if no codes present and oil at right level, suspect a faulty torque converter in the transmission.

with out.
well same answers on all cars made.
pull the ECU /PCM memory fuse'
or pull battery neg lug for 5min, or more.

the fuse on a wrangler 92 is. fuse #5 (wt/yl wire color) 10 amp
pin 9 on pcm is MEMORY. yellow

You can remove the fuse for the ECU or remove the battery for 10 mins or so ,should do the job. You probably have to drive the car through all its gears at varying revs before the ECU gets a chance to re-learn it'self

You'll need an odb or odb11 code reader - plug in normally under dash. This way u can get fault codes. Reset PCM is normally battery neg off for 30 secs to 5 mins. Normally clears codes - but if prob still exists fault code or engine check light should re-appear after first start of car or 2nd. Hope that helps a bit...

Disconnect the battery for 10 mins then reconnect the battery OR you can remove the radio fuse for 10 mins.

Record your radio presets, then remove the negitive battery cable to reset the ecu/bcm and it might take care of the light. im guessing it set a open/short code for the bcm when you pulled the fuse. By removing the negitive battery cable for 5 mins you will reset the ecu/bcm .

The engine management light comes on to inform you that the engine is not working correctly and it stores a fault code in the ECU with information on what is wrong. You can only access this information via a diagnostic device.
If the DME (engine) ECU keeps on seeing a fault on the engine operation it then goes into limp mode to protect the engine from damage (low power or stops) when you cycle the ignition it can reset the ECU and the process starts again (depending on what the fault is).

I remember something about some codes being in hex or base sixteen so did a hex to decimal conversion and got 420... Car is not strictly obd compliant as I think 03 onwards for diesel but I think the code is hex so should be p0420. If it is, cat below efficency, check what the lambda after cat is showing in live data.

I advise you to take your car to a Chrysler main dealership or specialist to have a real time diagnostic check done so a full diagnose can be given (this will have a set charge of approx 20 mins labour).

It could be a failed part on the engine system or just a software glitch that will require an ECU programme update.

Hope helped.

It is recommended that the engine ECU is reset after any engine performance modifications have been made to the vehicle, including using a higher octane fuel, to accelerate the learning of any new parameters. Resetting the ECU will also clear any stored error codes, however if you have a fault with your vehicle it is advisable that these codes are retrieved rather than wiped as they may help in diagnosing the problem.

1. Make sure the ignition is turned off
2. Remove the engine bay fuse box cover
3. Remove the 20Amp/25Amp EFI fuse
4. Remove the 15Amp ETCS fuse
5. Wait 30 seconds
6. Re-insert the two fuses
7. Install the fuse box cover

It is also possible to reset the engine ECU by removing the battery. Please note that this method will also reset any memory settings such as radio presets, trip mileage, clock etc.

Good luck... and remember rated this help!!