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Old 29-08-2011, 12:20 PM
Grease Monkey's Avatar
Grease Monkey Grease Monkey is offline
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Question Help with Vauxhall diesel.

Hi every one, can i ask for help with a Vauxhall Astra diesel 1999 1.7, the Vauxhall engine, code X17DTL.

Fault is that it runs rough all the time.

Codes are, PO725 engine speed input circ:.
P1335 injection pump no rpm sig: from ecu.
P0400 EGR flow.

We know it can't be the crank sensor as the motor would not run, the EGR lookS to be closed, we are thinking pump, any help would be great, thinks.
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Old 30-08-2011, 07:32 PM
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Gibbmodoll Gibbmodoll is offline
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Your fault should be the speed sensor, find it on engine block, the motor will still run with out it, but rough.

It has 3 cables, two of them well have a resis: at the sensor end, there is also a screen, that should test open.

You need a scope to test the sig: from it, the sig is to the main ecu, and the ecu will change this sig: from A/C to a square wave and send it to the injector pump.
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Old 02-09-2011, 09:31 PM
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Grease Monkey Grease Monkey is offline
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Wow thank you very much, we have fitted a new sensor and its fine now , who would think it would run with out it.
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