VW Golf III with loss of power especially at low RPM

Hmmm 1995 Golf with a 1.8 engine with a carb. Not from the USA AFAIK so my responses may not apply.

Does it have a CranK position Sensor? Do the instruments lose power like the ign switch was turned off? Maybe ign switch? Maybe fuel pump relay if so equipped?

good luck!

You do not state what gear you are in when this happens. Is it possible that the engine is twisting in the engine bay causing an electrical connector to fail? Loose electrical connections can be hard to trace. Some of the carb sprays can goof up potentiometers.

I think he mistakes a monojet injection with a carb. They look very similair on the outside......

SFC

"dave AKA vwdoc1" schreef in bericht news:Fp%Si.221$ snipped-for-privacy@nlpi070.nbdc.sbc.com...

ALL GUESSES, but since it sounds like that may be what your mechanic is doing too, seems fair. But they could have been reasonable guesses if those maintenance items were late, so I won't bust on him too hard.

From the 'spray into the carb' comment, sounds like it's also there at idle?

Could be a vacuum leak or a weak/plugged idle circuit in the carb giving a lean idle. Once the mains start to come on you feel the surging.

Don't know if there's a mechanical advance on the distributor. Could be that's sticking up to a certain RPM then they break loose.

If there's a computer, hook it up, read the codes and watch the indicators. If there's not, put on a timing light and watch the timing as you go through the symptoms. Tail pipe sniffer might be enlightening too.

You didn't mention what the old spark plugs looked like. 'Reading the plugs' is often a helpful clue to what's going on.

If it were me, I'd

- check the hoses for bad spots or not being hooked up

- make sure the air filter is clean

- make sure the choke and carb heat are working properly

Mark '95 Jetta GLS (USA 2.0l FI gas)

berichtnews:Fp%Si.221$ snipped-for-privacy@nlpi070.nbdc.sbc.com...

I'm sorry. Yes - I believe it is not a carburator, but just a trottle to mix gas and air - a monojet.

Regards

Klaus

No idea - I am a electrical engineer and am sorry to say not aware of all the details.

All instruments functions as normal. I can however hear a relay tripping, but not nessesarily the same time as the problem. Is probably another problem. Knock on wood.

Will advice the mechanic

Regards

Klaus

t i anf=F8rselstegn -

It happens in all gears. My guess is the spray fixes the potentiometers for a while....

Thanks

Klaus

It is also there at idle. When it happens it is a very sudden loss of power - like the ignition is removed

The old plugs were black, and as you say it is therefore not fair to blame the mechanic all the way.

New air filter also

Thanks, will pass the comments to the mechanic.

Klaus