Mondeo stalls when rev to 2000rpm -SOLVED-

[Raul]

When driving the engine stalls when rev to 2200rpm, battery light comes on and the rpm meter drops to zero immidetly for like 2 second or so it doesent respond to gas pedal, then it comes back alive just by it self. This issue doesent happen when the car is not moving (0 mph) I can rev all the way up with no problems.

Also Im suspecting that when I start the engine for the first time and try to drive streight away the engine stalls randomly, it doesnt have to get to 2200rpm to stall, its stalling right away when letting up the clutch on the first gear, and after while when the engine gets warm then it only stalls at 2200rpm when the car is moving. But Im not entirely sure about the second part as i only tryd once to drive without waiting for the engine to get warm.

I noticed 6 month’s ago that the transmission box lookd like its leaking, I have never changed/added transmission fluid to this car. (had the car for about 3 years) And I have been having engine light for a while (2 month?), but no error codes in onboard diagnostic. (instrument cluster) Would a odb tester be more helpful in reading faulty codes?

I think this stalling issue started couple of weeks ago when the winter came and it had been raining snow and the weather was cold. The car was sitting for like a week, when I first time started the engine rpm started fluctuating randomly up and down in idle, I shut down the engine and thought that I will take the battery home for recharge, next day it behaved the same way. This time I kept the gas pedal pressed for a while then it stopped fluctuating, but since then I have had stalling issues at higher rpm when the car is moving.

When the car is stalling only while moving does this mean that the issue has something to do with the transmission?
Any advice and thought are welcome.

btw. Battery readings: at rest= 12.2. Battery when engine on and head lights on= 14.2. Radio, hazard ind, ac, wipers on= 14.2

Topic

[college man]

I would stop at an auto part store and they will read any codes for free. Then
post the codes here and we shall help from there. You may want to check the
trans gear box fluid level and either top it off or change the fluid.

[Leo]

college man is right!!! Get as much information as you can before attacking a problem.

If you battery light is coming on it usually means a issue with the charging system of the vehicle. My vehicle takes about 3 minutes of driving to sense charging issue and illuminate a battery icon on dash(mine was an alternator). You alternator sounds good at 14v but dont assume your battery is good beacuse it says 12v at sitting. Load test your battery!!!! The oldest sketchiest looking batteries i’ve seen pass and new looking nice batteries fail.

Is your battery secured to the vehicle and not moving around?
Get a free battery test at a local auto garage.
Wiggle wires on alt and battery when testing. If the voltage drops that there is your issue. Wiring connections could be a issue especially in motion.
The fact that it got cold and now you have issues sound like a battery issue. Old weak batteries don’t take cold well and function fine in summer then winter comes…..

[Raul]

Issue solved for now, it turned out to be bad battery terminals. I cleaned the terminals and the issue disappeared.
Your help is very much appreciated, and nice tips too.

[Leo]

No problem 🙂

[college man]

[quote=”Downtown rally dude” post=180064]Issue solved for now, it turned out to be bad battery terminals. I cleaned the terminals and the issue disappeared.
Your help is very much appreciated, and nice tips too.[/quote]

🙂

[Author]

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