Replaced Crankshaft Position Sensor (CPS), but still does not start

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Nov 22, 2021 | 01:37 AM

RA020824

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Replaced Crankshaft Position Sensor (CPS), but still does not start

Last edited by RA020824; Feb 8, 2024 at 01:05 AM.

Nov 22, 2021 | 07:29 AM

chassis

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From: unbegrenzt

2017 GLE350 4MATIC

Replace the battery and go from there.

Nov 22, 2021 | 03:55 PM

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Nov 22, 2021 | 08:45 PM

RA020824

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But then I also came by this post

Is there a way to detect if the problem is definitely the fuel pump or the ECU? I don't want to risk spending $200 for a fuel pump which is not refundable after being tested..

Nov 22, 2021 | 09:29 PM

BlownV8

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E55, GLS450, GL63, GLE350

It's 99.99% the fuel pump. They all fail.

Nov 22, 2021 | 09:32 PM

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Dec 2, 2021 | 03:00 AM

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Last edited by RA020824; Feb 8, 2024 at 01:05 AM.

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Dec 3, 2021 | 10:44 AM

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Dec 3, 2021 | 03:57 PM

#10

eric_in_sd

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2007 GL450

Quote:

Originally Posted by ams3401

Yup the pressure was showing zero both at ignition and cranking. The kit I used was a rental from Autozone and it was very useful!

Good job. Sorry it was such a roundabout way for you.

Frankly I should have bought a fuel pressure test kit a long time ago. I guess I just could not believe the system does not report fuel pressure.

I ordered this one from Amazon. It appears comprehensive, so I figure I can make use of it on other vehicles should the need arise. There are a bunch on Amazon Warehouse Deals for $52. Considering I paid over a grand to have someone change my fuel pump, the diagnostic tool is cheap.