'93 940 no turbo engine stuck at max RPM

Service Engine Soon came back on and the car is again stalling ????? Did you have it checked for DTC'S - diagnostic trouble code's ? Service engine soon light on , codes will be present !

What make , model , year and engine ?

If you can get the actual codes we can better advise you.

After I had the throttle body of my 2005 mazda3 cleaned, the RPMs would jump drastically - bouncing back and forth up to 16 times! The service manager seemed perplexed...and ultimately the solution was TIME. The bouncing gradually diminished and then stopped...can't remember for sure, but it was probably over about 6 weeks, maybe about 1000 miles.

One of the power wire going from your ecm to a sensor or solenoid is shorting to ground. Get a wiring diagram and an ohm meter. disconnect the battery and start checking each wire measuring from the wire to ground. as you wiggle you will see the meter show 0 ohms when it is shorted. These are the hardest and most time consuming kind of electrical problems .good luck

Battery Charged ?

Battery leads tight and clean?

Checked Engine earth ?

If all OK then motor probably got some **** on the brush gear get sombody to help you, firmly apply hand brake.... ENSHURE IS IN NUTRAL OR PARK!
while they hold kek in crank position tap the starter motor with a hammer to free the crrap... that shuld do it!

Have A Great Day.......Bruce

Hi Badrick

Firstly, try disconnecting both your battery connections, and with the battery disconnected, turn the ignition switch fully, 3- 4 times ( To just discharge the computers ) Then reconnect the battery cables (pos + ) first.
This usually cures your problem.

Good Luck
John.

Check the fan it is not running,

It sound like you are having a electrical problem.You need to check your electrical/ignition system,not all electrical problem the diagnostic machine can read.

the alarm is activating when he locks it and for some reason the key or fob isnt deactivating it..check the disarm switches in the door