156 01 TS, Car randomly stops and refuse to start - Alfa Romeo Forum
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(Post Link) post #1 of 7 Old 11-08-16 Thread Starter
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156 01 TS, Car randomly stops and refuse to start

I've started having some trouble with my alfa, it's an 2001 156 2.0 TS. What happened was that while driving it stopped, I pushed it off the road and tried to start it back up. It wouldn't start, my previous car had a problem with the key code, so I checked for that but no light on the dashboard indicated a problem with the immobilizer. I kept going for quite a while, trying once in a while for several hours (was waiting for a tow), eventually it started back up.

I noticed there was no smell of gasoline at any point, or any backfire etc. So it didn't seem to have been getting any gas while I had been turning it. 30 minutes later, it cut out again, but I was close enough to home to push it. I tried the next day, and it started again, drove around for a while and parked it, when trying to get it back on it wouldn't start. It's been on and off like this ever since.

As mentioned no smell of gas, no backfiring when it starts, I removed the gas hose and it seemed to be gas under pressure (Wouldn't be that if it was the cutoff or pump issue?)... so it kind of seems like it's the injection, one way or the other. Doesn't act like it did with the immobilizer problem, no "code" light, and my old car never stopped while running, only when starting it up as a result.

Another thing that could be worth noting, when it was about to cut off.. it would idle at 0RPM, if I held the clutch, it dropped. When it hit 0, I couldn't get it back on, as long as I kept the gear changes quick and didn't come to a halt (eventually an intersection made it happen) It seemed to run. After having had this issue, and tried starting it up a few times, the engine light is on for a while after a successful start.


Any ideas? I've tried wiggling about and spraying various groundings, Also tried a running start while being pulled by the other car with no luck.

I suppose I could try to extract the error code, I suppose it doesn't go away even though the light turns off? Though from what I can see, it seems cars as old as this one would need an alfa specialist to get as they don't really follow a proper standard?
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Crankshaft position sensor
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That's a quite safe bet then ? They wouldn't be, always not working or always working? Not too expensive, so I suppose it's worth ordering one to see.
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As said classic crankshaft sensor symptoms. It could be something else and you really should get codes read to be sure.
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Originally Posted by flashist View Post
That's a quite safe bet then ? They wouldn't be, always not working or always working? Not too expensive, so I suppose it's worth ordering one to see.
It's a common and well known problem and the symptoms are exatly as you describe. The engine will cut out and refuse to restart untill it is cold.

The part is not expensive but is a trial of patience to fit. the sensor is up the back of the engine and only accessible from below so you need small hands/wrists.
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Anyone know of any guide to replace it ? I suppose I could just follow the wire, but always nice knowing the "right" way of doing it to begin with.
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I would recommend trying to get your hands on a copy of the GTV/Spider (916) workshop manuals as they were specced with the exact same TS engines and the GTV/Spider workshop manuals are a million times better than the eLearn crap the 156 has.

As the sensor should be more or less engine specific rather than model specific, hopefully you can just use the information from the 916 series workshop manuals (search in the GTV/Spider section on the forum for a digital copy) as hopefully the sensor should be in the same location with the same replacement technique. You would just need to possibly adapt the method of gaining access slightly for the 156 but at least you will know where it is and what tools you might require.

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