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M35 0.8 Boost Issue

burkash

By burkash,
in Four Door Family & Wagoneers

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andy65b Veteran

andy65b

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Hi Alex

Sounds like you have done a lot of maintainence to that engine with new timing chain and pulleys. Has the motor done many Km?

You are in summer now but if you have the trans coller fitted, perhaps it is taking longer for the transmission to warm up with the extra cooling. A lot of people here fitted a thermo switch in the trans cooler line so that at start up the transmission gets to operating temperature before diverting to the cooler.

When you highflowed the turbo, did they change your wastegate actuator? Is it possible that it does not hold as much pressure as the factory actuator?

It does sound like you drive your car fairly hard, these motors do use a lot of fuel when they are cold and also when pushed hard. They are far from an economical vehicle.

It sounds like some of the high fuel usage is determine by your foot and perhaps the other is to do with the motor thinking it is cool and the ECU suppling more fuel.

Good luck wioth the solution.

Cheers

Andy

burkash Rookie

burkash

Posted
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Posted

Russia? Would Eugene be able to help?

No, I think :)

Hi Alex

Sounds like you have done a lot of maintainence to that engine with new timing chain and pulleys. Has the motor done many Km?

Not many, the change was done with the odometer showing ~130000.

The previous owner hadn't maintained the car properly and didn't do the oil change in time, this resulted in early turbocharger death and also, right headlittle chain tensioner didn't work, so the chain became weak and vtc pulley has broken.

You are in summer now but if you have the trans coller fitted, perhaps it is taking longer for the transmission to warm up with the extra cooling. A lot of people here fitted a thermo switch in the trans cooler line so that at start up the transmission gets to operating temperature before diverting to the cooler.

No and again no! Cold transmission works perfect in my case. And there are no engine restrictions for too cold transmission, only when it's overheated the boost lowers to 0.5

It sounds like some of the high fuel usage is determine by your foot and perhaps the other is to do with the motor thinking it is cool and the ECU suppling more fuel.

This only depends on engine temp, not the a/t..

burkash Rookie

burkash

Posted
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Posted (edited)

Yesterday I've directly powered the fuel pump and perhaps, that was the solution! Car starts very quick now, and I'm feeling like boost is always as it should be. The car pulls hard and has better reaction to the throttle. Nothing to say about fuel consumption though, but I hope it will be lower too.

Not loudly announcing all the problems are gone, too little time has passed, but Scott, THANK YOU! If you somewhen come to Moscow -- let me know, we'll drink some right vodka ))

Edited by burkash

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