Mk3 Golf wont start up if left in garage - sony
It has no problem starting up when left outisde all night, even when its been very very cold. But if I leave it in the garage it wont start until I press the accelerator to the floor..... Why is this happening?? Is my mk3 golf afraid of the dark?????
Mk3 Golf wont start up if left in garage - Peter D
What year, carb or injector ( single point montronic or multi GTI )

Carb, choke butterfly sticking i.e. not closing, Injectors, faulty temp sensor or contacts corroded. Regards Peter
Mk3 Golf wont start up if left in garage - sony
Why would this happen in a garage and not when i leve it outside??
Mk3 Golf wont start up if left in garage - Peter D
Colder outside thus the choke demand is greater and flick it closed. And we still do not know what configuration you have. Regards Peter
Mk3 Golf wont start up if left in garage - Xileno {P}
All MK3's are injection.
Mk3 Golf wont start up if left in garage - Victorbox
Peter D's suggestion reminded me of standing on the throttle to start a car with a flooded Solex automatic choke carb in the 70's. Assume principle is the same with injection. It is "over richening" the fuel mixture in the warm garage but needs the extra fuel when outside so it starts OK. Hopefully an injection specialist will be along shortly.
Mk3 Golf wont start up if left in garage - mfarrow
Do you do anything unusual when you put it into the garage like leaving it outside and then put it away later? Such very short journeys can easily flood the cylinders next time you restart.

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Mike Farrow
Mk3 Golf wont start up if left in garage - Brit_in_Germany
The humidity in a garage can be significantly higher than outside, leading to condensation problems with the electrics. The advice to only put a dry car in a garage is well worth heading - it also has benefits in reducing corrosion.

BIG
Mk3 Golf wont start up if left in garage - Peter D
Xileno P your right, I've just finished a MK II with this problem but I have a MKIII here as well. Come on Sony reveal the engine size and injection system and lets move on before we leave you with the problem. Regards Peter
Mk3 Golf wont start up if left in garage - sony
My apologies. It's an N reg 1996 model, 1800cc ADZ engine and single-point Bosch Monotronic fuel injection.
So is it just down to humidity?
Mk3 Golf wont start up if left in garage - Red Baron
That depends hugely on the siting of the garage. Is the garage attached to the house and accessible via an adjoining door, or is the garage detached?

If it is the former then the humidity will be lower (over the winter months) than outside, primarily because the temperature is higher. The overall moisture content of the air may be higher, but the relative humidity is lower.

At the moment I put my wet car into the garage and the humidity actually goes down due to the radiating heat from the (switched off) engine!
Mk3 Golf wont start up if left in garage - sony
garage is detached.
Mk3 Golf wont start up if left in garage - Peter D
Remove and clean temp sender unit contacts. Then remove, inspect and clean the connections to the throttle body and the idle control motor. Ensure the connectors are refitted fully and try again tomorrow. This sounds more like a throttle position trigger than the temp sensor and might sustect the idle control motor which kicks the throttle open at start up is sticking. If you peel back the bellows cover you can spray some WD40 in there and wipe off the dirt eplace the bellows boot and try that. No not turn the engine on with any of the connectors disconnected. Regards Peter
Mk3 Golf wont start up if left in garage - sony
You sure seem to know what you're talking about! Many thanks for that, but due to not being mechanicaly minded, it is almost impossible for me to tackle that job myself. Any easier way of explaining this? I read in another thread you had a mk3 so could you send me a picture of your engine and circle what I should check?
Mk3 Golf wont start up if left in garage - Peter D
Send your email address to Peter@3DAssociates.co.uk.

Peter