406 turbo exec, stalling whilst idle, loss of power.

Gracchi · Post by **Gracchi** » Fri Jul 28, 2006 7:33 pm

Hi, been having few probs with me 406,

first the engine cuts out when starting in the morning untill the engine is warm.

over heating alot,temp rises alot veryy fast in short journys, (not traffic~).

also the car seems to have lost alot of boost,it revs freely in neutral , but loss of power under strok/drive.

went to leeds from leicester the other day, with air con , and power seemed to max out at 90 mph.

sorry about the english , hope can find some help, thank you.

Blue406 · Post by **Blue406** » Fri Jul 28, 2006 10:28 pm

Could be the stepper motor which regulates the air/fuel mixture.
This can cause erratic idling, stalling when depressing the clutch for a period of time like shifting gears when drawing up to lights.
The stepper might need a good clean out, or replacement.

Post by **Foxy** » Sat Jul 29, 2006 7:13 am

Stick the aircon on, if it still overheating then the worst case is head gasket failiure. This would also explain the loss of boost.

Gracchi · Post by **Gracchi** » Sun Jul 30, 2006 12:14 am

Yeah cheers for the info, its deff not the head gasket,(that went on me 405) its still got alot of power just not what it used to have.
, also can any one name some good coolant/anti freeze , please.

Gracchi · Post by **Gracchi** » Sat Sep 09, 2006 6:16 pm

Car wont go over 100 mph, i thinks shes dieing.

bye bye leather.

dio test on tue. fingers crossed.

Blue406 · Post by **Blue406** » Sat Sep 09, 2006 6:25 pm

You might not be firing on all cylinders ;) Honestly. Perhaps your coil pack is on its way out.
Also, check your exhaust is not blocked in any way.

Post by **mjb** » Sun Sep 10, 2006 1:34 pm

If something's up with the coolant system (ie if it's empty) I've found the engine goes into a limp-home mode totally devoid of power. Should pop up a dashboard warning light though...

Dumb question, but have you checked your coolant level?

Gracchi · Post by **Gracchi** » Sun Sep 10, 2006 8:03 pm

a light comes on ,on the dash when the coolant is low, i checked that, it looks ok.,

today the warning light came on for first time,

temp , is all over the shop,

,hopefully will find problem on tues,

will let u know.

was looking forward to the heated seats for the winter ,too., dam

jason j · Post by **jason j** » Sun Sep 10, 2006 8:22 pm

thermostat??? if this is playing up that might explain the up and down temp readings and power loss.

Gracchi · Post by **Gracchi** » Mon Sep 18, 2006 4:59 pm

its the catalytic converter,, thank budda, i thought it was the head gasket, or the turbo.,

any one have any ideas of price for a new one, please , thanks.

huge sigh of relief.

xplosiv · Post by **xplosiv** » Mon Sep 18, 2006 5:06 pm

Hi,

just out of intrest how did you find out it was the catalytic converter? (took it to a garage)

Many Thanks,

Andy

Gracchi · Post by **Gracchi** » Mon Sep 18, 2006 5:22 pm

mechanic friend yeah.

Davva2004 · Post by **Davva2004** » Mon Sep 18, 2006 5:33 pm

I had a similar problem with an old Rover 214i I had... would rev fine on the drive, but as soon as I applied any power on the road it would stall and die, lots of noise just no power. Turned out mine was a blocked cat, found out by getting under the car and giving it a shake, could hear chunks of the ceramic rattling. I did a quick fix... took the cat off, smashed all the ceramic out of it with a steel bar, then put the empty cat case back on the car. Suddenly, I had power again!!! Sold it quick before it was MOT time too

Gracchi · Post by **Gracchi** » Mon Sep 18, 2006 8:03 pm

^^^ lol

ill keep that in mind.,

think ill have to fix this one, as i like this car, and want to keep it.

Malachy · Post by **Malachy** » Tue Sep 19, 2006 6:18 pm

Gracchi wrote:^^^ lol

ill keep that in mind.,

think ill have to fix this one, as i like this car, and want to keep it.

buypartsby do a 406 turbo cat for 90ish quid if i remember with a 2 year guarentee