Oldbie

Talk about anything! (But keep it clean please!)
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DoubleOSeven
OEM+
Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Wed Oct 30, 2019 3:11 pm

On top: Grey Thermoswitch = Manifold / Carb. Heater 251 919 369B

On top: Red Thermoswitch = Thermal Switch for Auto Start / Inlet Heater 191 919 369B

Underneath: Black Sensor = Temp. sensor for coolant / dash guage 251 919 501D
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1990 CL 1.6 Automatic

rickygolf83
VAG Monkey
Posts: 830
Joined: Fri Nov 05, 2010 12:07 pm
Drives: 8v, 16v, mk4 1.8t, mk4 td
Location: Glasgow

Re: Oldbie

Postby rickygolf83 » Fri Nov 01, 2019 12:54 am

Dont know much about carbs, got my 1st carb car in 2017 and can do the basics lol

There is an FAQ for your 2e2 carb on golfgtiforum

http://www.golfgtiforum.co.uk/index.php ... ic=18871.0

Bound to be a hot start related post on there.

Some well known vw forum gurus have posted on it, definitely worth having a read

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DoubleOSeven
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Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Fri Nov 01, 2019 1:22 pm

Thanks for that - I will test the Thermoswitches by immersing them in boiling water, with a Multimeter across the pins. Should go open cct when hot, it says.
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1990 CL 1.6 Automatic

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DoubleOSeven
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Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Oldbie

Postby DoubleOSeven » Sat Nov 02, 2019 10:22 pm

The red thermoswitch had 2 ohms and when placed in boiling water changes to open cct. I bought a new one and it operates in the same manner. Not convinced therefore this is the issue. Road test tomorrow.
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1990 CL 1.6 Automatic

User avatar
DoubleOSeven
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Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Thu Nov 07, 2019 9:24 pm

Had a thought. On a previous non start when hot I sprayed carb cleaner directly into carb. This would have sat on the pistons and fired when ignited. It started, but this is essentially a ‘bump start’ for an auto, not because it was running lean. It doesn’t just become lean because it’s hot.

So, I wonder - when hot the solenoid is getting stuck and therefore not engaging the fly wheel. I can hear the starter spinning, so this put me off thinking it was the starter initially.

Think I’ll fit a new starter if tomorrow’s road trip is unsuccessful. Might outsource this job, if a starter motor swap on an auto is a bit of a ‘mare?
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1990 CL 1.6 Automatic

User avatar
DoubleOSeven
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Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Thu Nov 07, 2019 9:54 pm

Either that or fit hot solenoid.

Hot solenoid, so 1st takes the voltage and doubles it and passes it on to starter solenoid switch fires with gusto

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1990 CL 1.6 Automatic

rickygolf83
VAG Monkey
Posts: 830
Joined: Fri Nov 05, 2010 12:07 pm
Drives: 8v, 16v, mk4 1.8t, mk4 td
Location: Glasgow

Re: Oldbie

Postby rickygolf83 » Thu Nov 07, 2019 9:55 pm

Shouldnt be much if any harder than on a manual mk2 i'd imagine

The starter bolts screw through the front engine mount. Support the engine from the sump/bell housing on a jack with block of wood to distribute the load.

You may have to raise the engine via this jack to line the bolt holes up when fitting new starter

What makes you think starter is at fault? I had an issue starting and it was dodgy battery cable; excessive resistance

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DoubleOSeven
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Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Fri Nov 08, 2019 12:51 pm

I think you may be onto something with the high resistance - especially when hot.

I only suspected the solenoid / starter through another car scenario. Starter does spin freely hot or cold.
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1990 CL 1.6 Automatic

rickygolf83
VAG Monkey
Posts: 830
Joined: Fri Nov 05, 2010 12:07 pm
Drives: 8v, 16v, mk4 1.8t, mk4 td
Location: Glasgow

Re: Oldbie

Postby rickygolf83 » Fri Nov 08, 2019 4:37 pm

I only found out about mine after the engine bay had been powerwashed and steam was rising from the cable as it struggled to start.

The cable was absolutely roasting to touch

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DoubleOSeven
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Posts: 151
Joined: Wed Jan 22, 2014 3:51 pm
Drives: 1990 1.6 CL AUTO

Re: Oldbie

Postby DoubleOSeven » Fri Nov 08, 2019 7:08 pm

Adjusted air/fuel mixture (more rich/clockwise x5 turns). Started on the button/hot.
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1990 CL 1.6 Automatic


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