Cold start enrichment-still no start.

[drew@scirocco.cs.uoguelph.ca (Drew MacPherson)]

Cathy, I've not an expert on 5th injector operation, but one thing of note 
is that according to ETKA the thermotime switch for 16V engines is a 15C 
switch compared to the 35C switch for 8V engines.  Both switches have 
brown connectors on them.  Part number for the 16V switch is 034 906 163.

You should have continuity between one wire on the thermo-time switch and 
the 5th injector plug, so if you don't that's a problem.

Check the Bentley on the thermotime circuit - I seem to recall something 
about it only getting voltage while cranking (from a terminal on the 
starter) but I may be off base on that, as it's a fuzzy memory.  I only 
once ever had trouble with cold start valve operation, and that was on an 
80 Rabbit that I had swapped a 1.6 into (for the 1.5) and the wiring 
harness for that circuit had failed during the swap.

HTH,

Drew

On Sat, 28 Dec 2002, Cathy Boyko wrote:

> Me again. I want to know what to do next (no, I'm not giving you the car)
> 
> Problem: Car will not start cold 
> What I've done:
> Checked cold start valve, no spray when key turned on (start position) 
> Checked plug at cold start valve: No voltage when key turned on (start
> position)
> Quick check of plugs to thermotime switch, clean and not corroded.
> 
> 
> Now there should be continuity from the plug on the thermotime switch to the
> plug on the cold start valve, shouldn't there? Because no matter how I hook up
> the multimeter, I'm still getting infinite resistance between those two
> points. At least one of those wires should be continuous, shouldn't it?
> (pretty sure I'm reading the wiring diagram right, and it is the nearest the
> firewall of those two sensors, right?)
> 
> And what else should I be doing before I bite the bullet and replace that
> switch? (which the dealer flat out refused to sell to me a week ago "You don't
> need that"). And maybe I don't.
> 
> 
> Also, while rummaging around on the DS (or PS for those in the UK) side of the
> engine, there is a single electrical spade protruding from the side of the
> head (which you'd use about a 12 mm wrench to remove), just about straight
> down from the ISV , and near a fitting for coolant hoses to the engine. Looks
> like a sensor. What is it, and does it need to be wired up to something?
> 
> Thanks, and Merry Christmas a bit late.
> cathy
> 
> 
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