2003/53 ZT-T 190 KV6 2.5 Non Start Petrol

[COLVERT]

Originally Posted by T-Cut

So we have FFS AND a failed cam sensor? Wonder what the cances of that are?


TC

About as good as spelling "chances" I guess.---Lol.

[Thunderbolt]

Originally Posted by richw

Torque app is great. I used it to see Camshaft position sensor errors on mine.

You need to download both versions. The later one doesn't have the live data config file, but you can copy it across from the earlier version.

This is on my mates phone, I had it on my old phone, but not on this one.

That’s three different diagnostic tools that say no codes.

If the CPS was knackered I would hope one of them would have detected it?

[T-Cut]

Originally Posted by COLVERT

About as good as spelling "chances" I guess.---Lol.

Ha! You're right. First time for everything they say.


TC

[Thunderbolt]

Originally Posted by T-Cut

So we have FFS AND a failed cam sensor? Wonder what the cances of that are?


TC

I am not convinced that the CPS has failed.

[Thunderbolt]

Originally Posted by richw

Torque app is great. I used it to see Camshaft position sensor errors on mine.

You need to download both versions. The later one doesn't have the live data config file, but you can copy it across from the earlier version.

Any more info on how you set it up?

As it isn't detecting a fault on mine.

[Thunderbolt]

This morning I gave it it’s usual crank and it started without brake cleaner, it also idled at over 1000rpm!
Previously it idled at about 600 when started with brake cleaner.
The difference in conditions being it is a bit warmer today.

As I would be messing around with the choke on a carburetted car, I wonder how the ‘choke’ circuit works on these?

Sensor?

Blockage in an idle circuit?

[T-Cut]

Progess! Great stuff.

Originally Posted by Thunderbolt

As I would be messing around with the choke on a carburetted car, I wonder how the ‘choke’ circuit works on these?

The ECM takes care of everything and should sort it all out once it's fully warmed up. It'll seeem very rough at first, but should eventually assume 'closed loop' management which requires the coolant and the Lambda sensors to get to normal operating temperature. It's all in the RAVE manual which is worth buying from Rimmer - (is it still in the Forum Shop?)

Did you leave it running for some time?

TC

[Thunderbolt]

Originally Posted by T-Cut

Progess! Great stuff.

The ECM takes care of everything and should sort it all out once it's fully warmed up. It'll seeem very rough at first, but should eventually assume 'closed loop' management which requires the coolant and the Lambda sensors to get to normal operating temperature. It's all in the RAVE manual which is worth buying from Rimmer - (is it still in the Forum Shop?)

Did you leave it running for some time?

TC

Thanks mate, yes it starts and restarts, the differences being the ambient temperatures and idle speed.

The first couple of starts with brake cleaner were at colder temperatures, the rear screen heater was on automatically. Then it idled at 600 ish rpm, now it’s over 1000 for cold start and settles down.

Fuel level has dropped from 1/2 to 1/4 tank on the gauge.
Some sort of re balancing?
I wonder, after looking at your earlier referenced diagram if the two other pumps were a factor.

As for Rave, I have the cd and sadly a dead laptop that I need to fix. I got the CD from Rimmers.

Just off to put the seat back in, then going to have a go at the coolant leak.

[SD1too]

Originally Posted by Thunderbolt

This morning I gave it it’s usual crank and it started without brake cleaner, it also idled at over 1000rpm!

That's great to hear Calum. Leaving it overnight seemed to do the trick. The conclusion appears to be that fuel filter separation was the original reason for the fault developing. As for the reluctance to start subsequently, maybe air in the fuel line or even flooding (there's a nice carburettor term) after all the cranking. I'm only guessing of course, that's all any of us can do. Next time I will not be so hasty as to recommend the purchase of a new camshaft position sensor!

Oh and just a reminder to start a new thread if you have any questions about the coolant leak which is next on the list.

Simon

[T-Cut]

Originally Posted by Thunderbolt

The first couple of starts with brake cleaner were at colder temperatures, the rear screen heater was on automatically. Then it idled at 600 ish rpm, now it’s over 1000 for cold start and settles down.

I suspect there's a difference between the two, other than ambient temperature. The car will nornally start fine even at the low temperture you mention. I think the sequence of startup events in the second case (i.e. a normal startup) caused the ECU to operate in early (open loop) management. This raises the tickover speed because of the low engine temperature and enriched fuelling. The earlier startup was running too slow, so not in closed loop management. I'm wondering whether FFS was still affecting fuel delivery. The rail pressure you measured may have been compressed air rather than hydraulic pressure. You noted a fuel smell, but didn't report fuel as such, which should have been obvious. Maybe the time delay between the two startups allowed the system to 'purge'?

Fuel level has dropped from 1/2 to 1/4 tank on the gauge. Some sort of re-balancing?

It's more likely the dodgy gauge phenomenon that appears to be quite common nowadays (several threads recently). Fuel level balancing shouldn't affect the gauge since the two float readings are integrated.

TC