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Author Topic: Likely CPS has gone.  (Read 12127 times)

sgould

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Likely CPS has gone.
« on: 18 January 2025, 03:49:53 PM »
It never rains but it pours. 

So far this month...

New boiler.
Failed exhaust on the Carlsson.

Now the 9-5 failed to start in the Tesco carpark.  It started twice after short trips on the way there, so I assumed it was the hot start CPS issue.

I went off and had a cup of coffee  to let it cool for half an hour. Then i thought about it, and bought a bag of frozen peas to help it cool :)

On my return, it started, just.  So I have a job for tomorrow.  And I have a bag of frozen peas!
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carrera

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Re: Likely CPS has gone.
« Reply #1 on: 18 January 2025, 04:40:40 PM »
Sorry to hear that, but good news on the 9-5 diagnostic. :thumbsup:

I take it you have a CPS on the shelf already

Do you like peas, or would sweetcorn have been a preferable option
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sgould

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Re: Likely CPS has gone.
« Reply #2 on: 18 January 2025, 05:03:54 PM »
I have a CPS in the boot, but I didn't feel like changing it in the Tesco car park.  I put most of my tools back in the shed as the boot of the car is still full of the stuff I removed from the utility room to allow the boiler men free rein, so I'm not sure i had the right ones with me.

Peas are fine.  The pack is one with the four smaller ones inside.  I was only planning to use one small pack at a time!! :)
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sgould

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Re: Likely CPS has gone.
« Reply #3 on: 19 January 2025, 04:16:46 PM »
CPS is changed.  Access is a nightmare.  Took far too long and my back is very sore.

But, the CPS should have a resistance of 860 Ω ± 90 Ω.  So, between 770 & 950 Ω.  The old one was reading 1350 Ω.  The new Valeo one was 832 Ω. 

The car now starts fairly promptly.  I'll take it for a test run in the morning to check all is OK.  But it looks promising.
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TomPaine

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Re: Likely CPS has gone.
« Reply #4 on: 19 January 2025, 04:30:27 PM »
That's ruddy impressive Will, esp in this weather. Bravissimo.
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sgould

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Re: Likely CPS has gone.
« Reply #5 on: 19 January 2025, 05:05:03 PM »
I was well wrapped up and fortunately there was no wind at all.

I had to do something as the other car is off the road awaiting a new exhaust.
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carrera

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Re: Likely CPS has gone.
« Reply #6 on: 19 January 2025, 10:07:36 PM »
Glad the 9-5 is sorted, I'm assuming that the bolts yielded reasonably easily due to prior work, it was just access that was the usual challenge alongside the cold
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sgould

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Re: Likely CPS has gone.
« Reply #7 on: 19 January 2025, 10:34:21 PM »
Access is more difficult on mine as the 3 inch Hirsch downpipe gets in the way, ans all my extensions are too short or too long.   I changed the Torx screw when I did the last change and put in a stud and nut.  The problem is that my sockets are too thick and the heat shield is too close to the nut...  It went on, but coming off was a different matter...
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sgould

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Re: Likely CPS has gone.
« Reply #8 on: 25 January 2025, 03:06:11 PM »
I've done a few runs in the car since the CPS change, and it's definitively running more smoothly.  I'm surprised that, if there was a fault in normal running with the CPS faulty, that there wasn't the CPS code.  I can't remember which one it is.  Maybe something like P0304.
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