High Engine RPM while driving

[volvojj]

Originally Posted by StrongSpearWorks

The 25+ year old EC1 connector that lives next to the block and under the manifold can get brittle with time, as can the wiring. Mine was so sloppy it wouldn't make a useful connection any more. I snipped it off, spliced on a new one and put heat shrink over it all. Fixed that issue that time.
The ECT sensor is a known weak point in the LH system (any VAG owner of a similar vintage will tell you the same &#129315. Sometimes they last for 20 years, sometimes 18 months. When they fail they can produce all kinds of odd behaviour, even if they are apparently working (resistance and voltage are in range at a sample of temperatures). If it does transpire to be the sensor that's faulty, get a Bosch one; they're more expensive, but experience has taught me buy cheap, buy twice.

Many thanks for your replay and explanation about the problems with the connections.
I have uploaded some photos and video about fixing connectors and wiring:
> https://www.youtube.com/watch?v=GTRMJ937vDE
> https://www.youtube.com/watch?v=mNZq6PuOi5c

I think I understand about changing a connector on a existing wire (according to the first video). But what if the wire is damaged, do you simply cut the damaged part of the wire and solder an extension (as per the second video), or is better to install a whole wire (and where do you find/order a complete wire?

Also, may I ask if you can recommend some links about where can I order sensors and connectors (please also see my reply to RollingThunder).

Kind regards