306 Stalling

Hi,

Got a 306 which has the usual symptoms of stalling when idling. Have
replaced Stepper Motor and Coil Pack (just as a precaution more than
anything to stop the ECU being spiked) - now it only seems to stall when
cold, after she's been running for 5 mins or so, it seems to be OK.

I was about to send the ECU off to get it tested, but if it had been
damaged, I would have thought it would affect the car all the time - not
just when its cold.

Any pointers ? O2 sensor maybe ?

Cheers,
Tim.

 

Maybe the ECU needs to be connected up to Diagnostics and have any fault
codes reset, or the stepper motor needs adjustment.
Just a thought, im no mechanic but had similar problems with my 306, only i
needed to replace the ECU as the coil pack spiked it.
Hope this helps,
Graham.............

 

I posted my similar story earlier (below) and received no reply. My O2 sensor needed replacing, but the engine code light was flashing up and the ECU gave me the code informing me it needed replacing. It's a very common prblem and my 306 has had it for past two years and I've sorta got used to it, but it still annoys me. Good luck!

"I know this topic comes up alot and I have tried all the normal avenues to
rectify the cold stalling issue and to date I have done the following: put
in new O2 sensor, new temp sensor, new stepper motor, checked all hoses and pipes
for leaks, full service at independant garage (was due for full service and
they found no problem), scanned at peugeot dealer (useless).

I haven't checked the MAP sensor yet and I have read that maybe it would be
the potentiometer. I know where the MAP sensor is, but not sure where the
potentiometer would be in my P Reg 306 XSi 8valve 2.0 stalling nightmare of
a car.

Also once it gets up to operating temperature it seems to be fine. Any ideas
or help would be very much appreciated."

 

"I know this topic comes up alot and I have tried all the normal avenues to
rectify the cold stalling issue and to date I have done the following: put
in new O2 sensor, new temp sensor, new stepper motor, checked all hoses and
pipes
for leaks, full service at independant garage (was due for full service and
they found no problem), scanned at peugeot dealer (useless).

I haven't checked the MAP sensor yet and I have read that maybe it would be
the potentiometer. I know where the MAP sensor is, but not sure where the
potentiometer would be in my P Reg 306 XSi 8valve 2.0 stalling nightmare of
a car.

Hi,

The potentiometer is just underneath the stepper motor - held on with 2
bolts - just like the stepper motor.

Do you know where the temperature sensor is ?

Cheers,
Tim.

 

Cheers for that.

The temp sensor on my 306 (Xsi) was a complete b*tch to get to. It was
behind the main engine block and at a really awkward angle. I bought a new
temp sensor, about £10, then gave up trying to replace it and took it to my
local decent-ish garage and asked them to replace it. It had to go on the
ramp. Only took them 15 mins, but saved me a lot of hassle.

The temp sensor has a green plastic top if I remember rightly.
Hope that helps?

 

Cheers Johnny !

I've just sent my ECU off for testing so will wait to see what the outcome
of that is. Might have to try the temp
sensor next maybe. After that - don't think I'll bother throwing any more
money at it - like you, wil probably just
have to get used to it !!
Will let you know if I have any success.

 

Dokily!

How much does it cost to send the ECU for testing and where?
Please let us know the outcome.

From the two 1.5 yrs of trying to get mine sorted here's a list of what I'v
read/been advised to check for cold stalling:

Vacuum leaks/broken hoses, faulty stepper motor, faulty potentiometer, coil
pack frying ECU, wrong sparks, wrong battery, temp sensor failure, O2 sensor
failure.

 

Hi,

Mine cost around £30 and I used Avilec in Southampton. There are a bunch of
places that will do it though. tunemycar.com do it and so do bba-reman.com.

My ECU has been fried by the looks of it - when I took the back off - there
is a nicely blackened/scorched area near the processor so it looks like I am
in need of a re-conditioned unit. When I get it, will let you know if it
fixes the problem.

Cheers.

 

Ok cheers. Good luck and I hope you don't need to shell out loads of ££££'s!

 

Hi,

Just got my ECU back today, fitted it and the Pug runs just like it did when
it rolled out the factory ! Well happy !

Cheers.

 

Presumably it has been reconditioned. Expensive?

 

Hi,

Yep, re-conditioned - about £180 + VAT. Peugeot main dealer wanted £550 +
VAT for a new one.

 

Peugeot are not exactly cheap are they ;o)

Keith