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Dec 25, 2014 12:21:06 GMT
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Hey all
Would the crank angle sensor stop starting the vehicle all together?
Symptoms:
Driving the vehicle the night before no problems what so ever - the odd stall at idle over a month or so!
Next morning vehicle drove 500 or so metres before cutting out at 25 and then failed to start all together!
Currently checked:
Fuel pump reply and is working! As I thought I may have used the fuel in the lines to travel that distance and then nothing!
No spark at plugs no cracks or damage to rotor arm or points on dizzy cap! Fuel at injectors! Strong turn over!
Correct voltage at starter motor so engaging correctly!
Please help here about to buy dizzy cap rotor arm ignition leads ignition coil and crank angle sensor maybe a little guidance would go a long way before doing so!
Thanks rob!
Ohhh merry Xmas!
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ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
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Mk3 golf gti non starter!ChasR
@chasr
Club Retro Rides Member 170
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Dec 25, 2014 16:27:16 GMT
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Merry Christmas chap  . With the Golfs I am unfamiliar so you may have to correct me on one or two places (I am assuming a couple of things here). Is there 12V present at the ignition coil terminals? If you connect a spark plug to the king (coil) lead is there a spark present then (with the rotor arm and dizzy coil being bypassed? If so that will rule out the ignition coil and lead as being at fault. I would then look into replacing the rotor arm (with a good item (Bosch preferably, or Bremi or Beru if you have to use them ; I would try to avoid Intermotor). It might be an idea to replace the dizzy cap as well. The ignition amplifier (if present) may be worth checking out as well. But yes, a crank sensor could cause the car to not fire, from a gap being too big, a connection issue or the sensor simply being duff. |
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Last Edit: Dec 25, 2014 16:27:49 GMT by ChasR
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Dec 26, 2014 13:05:45 GMT
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Cheers bud! I'll look into it over the next couple of days being Xmas and all! I'll let you know about my findings!
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Dec 27, 2014 13:15:06 GMT
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The crank sensor is a swine to change so hope it isn't that. No spark means it could be that though. Coilpacks are a common issue and easy to change and fairly inexpensive, they are also common over a HUGE range of VAG and other stuff so there's good odds you could borrow one.
Does the fuel pump prime and then start pumping again when you turn the engine over?
What year is it? if it has the later AGG engine (which it should have if it has a crank sensor) then you should really get it on VAGCOM and check to see if it shows anything in the "engine RPM" bit when you turn the engine over.
I had a break in the wiring for my crank sensor (loom side, next to the plug) which gave this fault. Van ran fine, did thousands of miles and then one day just cut out after changing into 2nd gear and wouldn't re start.
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Dec 28, 2014 20:00:34 GMT
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When our '97 Mk3 GTI 8v did this it was the coil pack. Drove into the the drive normally. Switched off. Went to start it again 3 minutes later and would not fire.
Nick
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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sparkyt
Posted a lot
selling stuff
Posts: 1,767
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Dec 29, 2014 10:20:41 GMT
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If you have a dizzy .
You won't have a cps. ...
Dizzy does all the work is it an agg or 2e
Engine . .
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Dec 29, 2014 13:54:44 GMT
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The AGG definitely has a crank sensor which is uses for most stuff, and will run but throw a wobbler (5k rev limit, reduced timing advance etc etc) if the dizzy sensor is unplugged or not quite timed right, but it won't run at all without the crank signal.
2E relies entirely on the dizzy and has no crank sensor or even anywhere to fit one.
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