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Engine Specific Info and Questions => IDI Engine => Topic started by: Richair on October 21, 2007, 04:50:52 am

Title: Sudden Loss of Power
Post by: Richair on October 21, 2007, 04:50:52 am

Hi all, please excuse my n00bness if this has been covered before, did a search but no avail...

I have this major re-ocurring problem with my mk2 GTD. Im driving along at a constant speed and I get a complete loss of power (and a big thud as it happens, it is that instant). The car will continue to coast and throttle inputs make no difference. however, the engine continues to idle!?

After siting at the side of the road (embassingsingly) for a few moments, the car will pull away again as normal.

Now this happend to me a number of times last weekend on the motorway. I eventually got to a services and pondered what to do. My GF suggested that we try putting more fuel in it (it was just over 1/4), so i thought why not and it got us home fine.

Because of the above, i'd put the problem down to the fuel pick-up in the tank so have been keeping the gauge above the half way point all week with no problems. However, the car has done the same thing today with the tank brimmed up, so its obviously not that.

Im guessing now that the problem is related to a valve in the pump??

Help would be very much apreciated :wink:

Thanks,

Rich

Title: Sudden Loss of Power
Post by: bert on October 21, 2007, 05:40:51 am

I had a very similar strange problem too,it was the stop solenoid on the pump shutting 90% it would idle but not drive,when i put a voltmeter to the solenoid it was only getting 5volt instead of 12volt,i run a new cable from the solenoid to the keyswitch and it never happened again,must have been a bad wire in the loom,this might not be it,but it took me ages to figure it out  :wink:
Bert

Title: Sudden Loss of Power
Post by: Richair on October 21, 2007, 06:10:10 am

Hmmmm, sounds promicing!

Well I have it in bits now (im punishing it lol) to change the cambelt. But once all back together, I will check that out.

It just seems like a switch/valve closes and theres no power, so a solinoid would make sense :)

Edit: Just been and had a look; Im guessing the stop solinoid is located on the top of the fuel distributor? If it is, the connection on to it looks very dodgy :?

Title: Sudden Loss of Power
Post by: mk2diesel on October 21, 2007, 04:30:02 pm

yup ... just a single wire  ....

Title: Sudden Loss of Power
Post by: Black Smokin' Diesel on October 21, 2007, 08:34:44 pm

Yeah the connection on the solenoid isn't great, it's not even protected :? One would think VW would use some rubber cap to keep it clean, being a pretty critical part (geez even then horn connectors have such a rubber cap). Anyway, I think you could use a horn cap on the solenoid to keep it clean and corrosion free.

Title: Sudden Loss of Power
Post by: jtanguay on October 21, 2007, 10:11:02 pm

just solder the bugger on.  its not like you remove it often, and when you do, simply apply heat to remove it.  you'll never have an issue with it again like that.  i did that to my starter wire which completely corroded off (car just wouldn't start one day  :roll:  :lol: )