Hi all,
Please note that this is jeffs car that has the problem, so please
direct replies to him.
With Peugeots, particularly the 505 V6, besides the obvious component
faults that need to be checked for, the integrity of the wiring and
connections needs to be checked. Just because the ECU is not getting a
good signal from a sensor does not mean that either the sensor or ecu is
faulty. Don't forget all the wiring and crimped on connections and
OnOnrelays and fuses and connector blocks and splices....
I just lent a friend a V6 afm, because he had been told his one was
faulty. The loan one proved it was not the afm, and he was saved
megabucks. It turned out to be a loose wire behind the engine...
And that is fairly typical of a number of 505 electrical problems I have
had to fix.
Kevin
gary freeman wrote:
> I'm not familiar with your particular car, but most
> electronically injected cars are similar in some
> respects. Usually if your injectors are not working;
> and the ECU has power and ground and is good,then
> it's probably the TDC sensor or maybe the speed
> sensor. Those are the main requirements for the ECU
> to operate.
>
>--- Pug NZ <pug-yahoo2@azorah.co.nz> wrote:
>
>
>
>>An intermittent spark with power to the coil points
>>towards an
>>electrical fault (surprise surprise on the V6!).
>>
>>To get a spark on the V6, a number of systems need
>>to interact.
>>
>>The power for these systems comes through the four
>>relays above the fuse
>>box. first step is to check that these are all
>>working properly and
>>supplying power to the appropriate circuits. When
>>the engine is cranked,
>>the ECU first waits for feedback from certain
>>sensors before producing
>>a spark, supplying fuel. If you are checking for a
>>spark, use one of the
>>spark plug leads, not #1 cyl though. #1 has a sensor
>>on it that the ecu
>>needs. Check the distributor cap and rotor
>>condition. The resistance
>>across the rotor should be around 1000 ohms from
>>memory (I can dig this
>>out if need be), one of mine caused problems when
>>the resistance rose to
>>around 3000 ohms.
>>
>>No point in checking fuel pressure if you are not
>>getting the injectors
>>clicking when you are cranking.
>>
>>Kevin
>>
>>marc rogers wrote:
>>
>>
>>
>>>Check for fuel pressure next
>>>
>>>--- Pug NZ <pug-yahoo2@azorah.co.nz> wrote:
>>>
>>>
>>>
>>>
>>>
>>>>Can you hear the injectors clicking when you are
>>>>turning it over?
>>>>Have a look at the bunch of four relays above the
>>>>fuse box in the engine
>>>>bay. Check the relays, and for bad connections
>>>>between the relays and
>>>>connectors, and also between the connectors and
>>>>
>>>>
>>the
>>
>>
>>>>wires too.
>>>>Kevin
>>>>
>>>>Jeff wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>A new problem has developed with my ignition, on
>>>>>
>>>>>
>>my
>>
>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>89 505 with the V6.
>>>>
>>>>
>>>>
>>>>
>>>>>Engine cranks fine, and there is current to the
>>>>>
>>>>>
>>>>>
>>>>>
>>>>coil, even during
>>>>
>>>>
>>>>
>>>>
>>>>>cranking. Every once in a few tries, with the
>>>>>
>>>>>
>>coil
>>
>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>wire pulled, the
>>>>
>>>>
>>>>
>>>>
>>>>>coil will product spark. Anything I should be
>>>>>
>>>>>
>>>>>
>>>>>
>>>>checking for? Thanks in
>>>>
>>>>
>>>>
>>>>
>>>>>advance, to all that reply, jeff
>>>>>
>>>>>
>>>>>
>>>>>
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Received on Thu Aug 11 18:03:17 2005
