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Topic: Camshaft Position Sensor (Read 839 times) |
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
 
Posts: 246
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Camshaft Position Sensor
« on: Feb 10th, 2019, 3:42pm » |
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Can anyone please give me some info on the Camshaft position sensor.
The engine is vibrating and not giving in full power,
I get the error code P0340 Camshaft Position Sensor A circuit (bank 1)
The wiring to the sensor is bad, if I touch the multiplug the engine, rev’s drop.
I am not sure if it’s the wiring to the multiplug, the plug itself or the sensor or all.
I would like to replace the sensor, multiplug and section of wire going to the plug.
I would like to know
Is the CPM sensor obtainable and can is it easy to fit?
Can I buy the multiplug with a short section or wire attached? Last year (with the help of the forum) I got a TPS multiplug with the wires already connected and it was easy to solder onto the existing wiring.
I could not find any info on the main site.
Car is a 2.0 16V
Thanks
Tony
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PJDavis
Senior Member
2 x 1995 Jag X300 3.2 / 4.0 (Henley) 1957 XK140
Posts: 1474
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Re: Camshaft Position Sensor
« Reply #1 on: Feb 10th, 2019, 9:46pm » |
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Typical wiring problem with the loom at the top because of heat. The wires will be all 'crumbly'.I bet the sensor is ok its just the wires. I think I might have a spare sensor, if not, Roy has a few. I would think your whole loom is goosed, (not good news I know) this will be the tip of an ice-berg. Sorry to give bad-news.
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I love 'Movvy'
1995 Jaguar XJ6 X300 3.2 (Henley)
1995 Jaguar XJ6 X330 4.0 (Dopey)
1957 Jaguar XK140 USA (converted to RHD, and to have fitted Mk10 420G Engine with BW 65 Auto Trans)
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #2 on: Feb 10th, 2019, 10:18pm » |
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Thanks for the info, I think you are right. Most of the loom did get replaced two years ago. When I say replaced, it was not a proper job. I got a guy to service it and the wires broke trying to change the plugs. he cobbled a rough loom together using a Corsa loom. If its not the sensor, I think it the connection to the multiplug as the revs go up and down when I touch the edge of the plug.
Is the connector part of the sensor ?
let me know how much you want for the sensor ?
Thanks
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #3 on: Feb 10th, 2019, 11:30pm » |
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The sensor is easy to change.
These plugs will fit (also fit the coilpacks), hunt around if you want them with tails:
https://www.ebay.co.uk/itm/121349340166
uk.rs-online.com sell the same type & here is a more compact version similar to the ford ones, however you need to order the seals & terminals separately:
https://uk.rs-online.com/web/p/automotive-connectors/7199403/
Make sure the wires haven't been trapped under the back of the coil cover or rubbing against the stud near the sensor.
For testing the engine will run quite happily with the camshaft sensor disconnected - I can't tell any difference when driving.
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #4 on: Feb 17th, 2019, 12:11am » |
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Thanks Tompion 
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #5 on: Apr 9th, 2019, 4:01pm » |
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I replaced the CPS, multiplug and quite a bit of the wiring but the car is still the same. Can anyone suggest what I should look at next. I cannot connect the ODB2 cable untill late next week
Thanks
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #6 on: Apr 9th, 2019, 5:22pm » |
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Difficult to say without checking for codes.
Did you try running without the cam sensor connected?
The wires should be twisted but I haven't a clue how important it is if you didn't do it.
The symptoms are typical of a failing coilpack - which probably won't give a code.
If you still get a cam sensor code if it were me I'd run the 2 wires directly to the passenger footwell & splice to the wires from the PCM - you could go through one of the spare entries in the bulkhead grommet - the advantage is minimal disturbance of the cooked wires in the engine bay looms & you reduce the cable run by close to 3 meters.
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #7 on: Apr 9th, 2019, 8:39pm » |
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Thanks Dave
I did try running it without the cam sensor connected. Should the car run normal with it disconnected ?
Although I allready had the cam sensor code, this all started after going over a bump.
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #8 on: Apr 9th, 2019, 11:53pm » |
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Yes, should run fine with it disconnected.
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #9 on: Apr 10th, 2019, 11:21am » |
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Is there any way to prove or elimimate the coilpack as the problem?
Thanks again
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #10 on: Apr 10th, 2019, 2:12pm » |
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The engine will run on 2 cylinders - badly of course.
Try disconnecting 1 pack and starting the engine.
Next try the same with the other pack.
If it runs better on one try swapping them over & see if the problem moves with them.
If it is a coilpack in the early stages of failing closing the plug gaps may help as a temporary measure.
Sometimes with a bad pack you'll find the cat gets hotter than usual due to unburnt fuel.
I now always carry a spare pack - over the years I've had 2 fail on this car & 2 on the previous one. Twice it's happened pulling up at a junction - fine when I stopped, running on 2 when I pulled away.
Last one I bought last year, I picked up a new genuine Ford (bosch) one for £25 on Ebay. Try searching with the ford part no 6485688, you'll find pattern ones for about that price.
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #11 on: Apr 10th, 2019, 4:25pm » |
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Thanks again Dave,
The car is is Norway (my wife works there ). I think I will take over a coilpack when I go next week as I need to get the car sorted so I can book a boat to get it back for its mot in May.
Do I need any special tools to fit it and is is easy enough for me to do it?
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #12 on: Apr 10th, 2019, 5:12pm » |
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Ten bolts on the coil cover.
A connector & 2 bolts on each pack. There's a lead going from each pack to a spark plug, the packs sit on top of the other 2 spark plugs & sometimes need a bit of a tug to get them off. I think they're torx bolts holding the packs but I don't know the size.
Pictures 12 & 15 in this PDF:
http://www.fordscorpio.co.uk/manual/engines/dohc16v/DOHC16VCHead.pdf.
It's not unusual to find oil in the plug wells, if the ends of the coil packs are oily mop out what you can around the plugs.
It's easy enough, should be fairly obvious.
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #13 on: Apr 12th, 2019, 11:45pm » |
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Thanks for all your advice Dave, I have ordered a coil pack and let you know how I get on
Tony
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Camshaft Position Sensor
« Reply #14 on: Apr 24th, 2019, 9:07pm » |
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I replaced one coil pack and the engine now runs fine. many thanks for all your help Dave
Tony
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Camshaft Position Sensor
« Reply #15 on: Apr 24th, 2019, 10:07pm » |
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ABS multiplug wheel sensor pins MK IV or MK 20
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