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[Engine] 2.0hdi crank sensor
#1
Recently had to change the crank sensor on my 2.0hdi after it failed. Working out what had failed was a bit of a nightmare but when I purchased the car (Partner 03) the previous had had the RAC diagnose crank sensor failure but when I bought it started and ran for a year and a month , with the occasional refusal to start but turn off and on normally had it going. Well anyway back to the nonstarting , I had a Xsara picasso in the garden which is also 2.0hdi so had some spares that could be swapped over. After a lot of swearing had the crank sensor off the Pic and knowing how fiddly it was on that did not look forward to doing the same on the Partner but just bit the bullet and had a go. Without diagnostics it was a change and try method, was pleasantly surprised and pleased when I tried the key and it started straight away. Did the crank first because it was the harder one than the cam sensor.
Give it a run from Sheffield to Wakefield and a few were noticed,
1 it quieter,
2 it was smoother especially when in 4th at 30mph when before had to change down due to juddering,
3 it seems to have a bit more get up and go but that might be me imagining things.

As the car has done 194,000 miles and the Pic similar will be getting new sensor as can be had for £12 to £15 so worth the expense.
Upon reading some info on these sensors it appears that if crank sensor not working properly engine will not start but cam sensor engine will sometimes run but rough.

Derekg
[-] The following 1 user says Thank You to Derekg for this post:
  • cancunia
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#2
A good result thanks for sharing !
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#3
Today Thurs 6/7/17 car started OK went to Sainsburys did shopping started again went to Wickes on coming out of Wickes non start. AA called, he plugged reader in diagnosed camshaft sensor. Towed me home fitted spare I had from Picasso still no go. Pic spare probably older than Partner item , so have ordered new ones. Hopefully sorts out the problem. Will let you know, but this after last Sunday driving down to London then onto Crawley and then back to Sheffield.
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#4
(06-07-2017, 03:29 PM)Derekg Wrote:  Today Thurs 6/7/17 car started OK went to Sainsburys did shopping started again went to Wickes on coming out of Wickes non start. AA called, he plugged reader in diagnosed camshaft sensor. Towed me home fitted spare I had from Picasso still no go. Pic spare probably older than Partner item , so have ordered new ones. Hopefully sorts out the problem. Will let you know, but this after last Sunday driving down to London then onto Crawley and then back to Sheffield.
New sensors arrived fitted cam one first as easier to get to, tried starting car no joy. So dismantled things to get to crank sensor added a few swear words as well. Changed crank sensor engine started, good. Went back out to go to Asda seemed to not want to go but it did start so off we went. When I stopped in Asda tried to restart no joy, more swear words. AA called again , cleared fault code PO340 and engine started but scanner came up with the fault code PO340 immediately. PO340 is camshaft sensor and/or attached wiring to ECU. AA followed me home and went thru some diagrams with me and showed me where the wires go to on ECU. So next course of action is to check for breaks or short in wire.

 But why when the code is cleared does it allow the engine to start any ideas anyone, hopefully someone else has seen this problem.
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#5
Checked wiring to ECU all ok. Have noticed though there are 2 different sensors for the crankshaft , 1 is 400 Ohms and the other is 470 Ohms. As I might have said this is a Peugeot Partner 2.0 Hdi Siemens system. Going on EFI catalogue there are numerous part numbers for the camshaft so they all appear to fit. Any ideas anyone.
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#6
I have over the last week checked and repaired a wire that had been abraded by rubbing on the plastic shield that protects it.
Replaced both cam and crank sensor , still no sync between them.
Reset the timing of the camshaft it was about 2mm out if that, checked by revolving the engine about 5 times still lined up.
Made sure the air gap on camshaft was 1.2mm.
When turning engine over with planet attached for live info shows that still no sync.
Measure of voltage at cam connector is
Pin1 +5volt
Pin2 signal 12volt
Pin3 -ground.
Crank show engine revolutions.

Any ideas!!!
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