Wilsophia

This morning is cold, around 6C at outside temperature. When I start the my C32, everything is ok and the engine idle is around 1000-1200rpm. It keep steady running. Then I put the shift to N, it still running smooth. After 1x second, I put it to "D" shift. The car just started to move but it stalled! The dash show up a "battery / alternator visit workshop". Then I turn off the car and restart again. Everything is ok. Then I wait around 1 minutes and shift to "D", it run smooth all over the day.

Should that be the engine oil, coolant, engine fluid temp is too low and I didn't did the full engine warm up and cause the stall?

Please advise ?

Thanks

AMGnut88

no i dont think your oils,fluid would cause a stall. sounds more like a airflow/sensor problem

Budget Baller

Do you have a checking engine light? I'm wondering if the car has thrown any codes. That would greatly help. There are a number of things that can cause the car to stall out.

(Though I'm wondering if it could be your CPS sensor)

mikekuriger

that sounds like a MAF sensor problem.

nladam12

I would first think it was an MAF sensor problem, but I have yet to see one produce the alternator failure screen! I would check up with the MAF, check the codes, then check the alternator/battery. Its deffinately an odd problem. Check the obvious, then let us know what shows up. Is this a constant problem? and were there any symtoms before this happened?

adam

mkonei

IAC if they have them.

msheredy

Another possible curprit could be the crankshaft sensor going bad. That would trip a CEL.

FrankW

C32 doesn't have a MAF and a broken CPS doesn't go out when cold.

pull the codes and check throttle position sensor if it happens again.

Wilsophia

Problem "seems" fixed after......the throttle **** fully cleaned.

This is the China New Year that all the garage, sub-dealer are closed for at least one more week until next weekend. There is no parts for sale at this moment. WTF !!

I have some spare time in this morning so I want to locate the MAP sensor first for the later replacement. When I removed the Y-pipe, I found that the throttle **** inside was full of carbon dirt and keep oily. And there is no gap between the throttle **** and body after fully closed. The gap was jammed by those carbon stuff. So I started to clean them by WD-40 and cloth rub. After deep cleaning work the gap appeared again. Then I installed everything and use electrical contact cleaned to cleaned up the electrical plug too.

Then I start the car, warm up for 10 sec and put to "D" shift, it run without stall or even no weak RPM !!! Everything resume back to normal. Then I leave and test again again night (after my work). It is ok too ! Very good !

Hope I have solved the problem because it is not very cold today, just around 12-13C. I m afraid it will have the problem when it drop to 5-6C again !

I have post some pics for sharing

Wilsophia

Some more photo

Lenin

Good job fo being brave. And Happy New
Year!

Wilsophia

Thanks Lenin,

Btw, I didn't tried the high speed test, I dunno how it's work.
For what I did, will it hurt the TB?

Thanks