[urq] Starting issues... Hall Sender?

[urq]

... if you are looking at the correct signal on the Hall Sender and you do
not see it flashing it is something that will cause a no start situation.
The ECU needs this reference to know when to fire the spark plugs ... 

I don't know about using a test lamp on the reference and speed signals ...
these are analog signals which depend on metal passing a pick up ... I
usually look at them with an oscilloscope.  

I'd recommend resolving the Hall Sender symptom before looking elsewhere.
Once you see the Hall Signal, if the car still won't start, verify the
timing relative to TDC.  If you had a car that was working and now is not,
the problem may be due to the timing belt slipping a tooth.

Steve B
San José, CA (USA)

-----Original Message-----

The starting problem returns!

I was just starting to work on some extra goodies on Gobi this  
weekend (early morning) when I was getting ready to run her up some  
ramps... she wouldn't start. Okay, been through this process before,  
right! Did all the usual "car does not start" diagnostics and the  
only thing I came up with when I was using my homemade LED test light  
at the ECU, was when I cranked the engine while testing the Hall  
Sender, the light stayed on constant, not flickering like the manual  
stated. Then I checked the Reference Mark Sensor (with LED) and  
thought the pulsing signal was a very weak. I have since replaced the  
Speed Sensor with the same symptom (weak signal) and she fired right up.

Okay, now that you know the background. Here's what I must ask. If  
the test light for the Hall Sender doesn't flicker, does that mean  
it's faulty and needs to be replace (not sure how to do this yet) or,  
is it a faulty Reference Mark Sensor? If it's the RMS, I can't budge  
the damn thing! I think the aluminum sleeve has fused with the tranny.

Any advice on this? I need to get her back on the road for the next  
event in two weeks.