Cayenne not starting

[uttamm]

Hi Guys,

Please help if any one, MY 2004 Cayenne S 4.5 is not starting after a message "Oil pressure too low" whereas I saw the engine oil level was not low. This message got disappeared after some time, I thought It might due to very cold temperature in upstate NY. And then there was misfire with code as P0300, P0302 so I replaced the 2nd engine coil which removes these codes. Then I replaced new battery and bought Starter to replace but before replacing it I took help from a nearby Indy shop, he tried not able to move crank pulley. So he said the engine is seized and it needs to rebuild. Is this true? Please suggest if any one has an idea to take steps.

Thanks,
Uttamm

[Cobalt]

Originally Posted by uttamm

Hi Guys,

Please help if any one, MY 2004 Cayenne S 4.5 is not starting after a message "Oil pressure too low" whereas I saw the engine oil level was not low. This message got disappeared after some time, I thought It might due to very cold temperature in upstate NY. And then there was misfire with code as P0300, P0302 so I replaced the 2nd engine coil which removes these codes. Then I replaced new battery and bought Starter to replace but before replacing it I took help from a nearby Indy shop, he tried not able to move crank pulley. So he said the engine is seized and it needs to rebuild. Is this true? Please suggest if any one has an idea to take steps.

Thanks,
Uttamm

Unless you royally screwed up it is hard to damage a cayenne engine. Odds of it needing a rebuild are minimal to nonexistent assuming you did not run it without oil. How positive are you that there is enough oil in the system? How well does your Indy know Cayenne's?

You should always replace all the coil packs at the same time. Changing number 2 was correct for the misfire but I would be suspicions of the others IIRC the design has changed and not sure if they are compatible. Have you had the coolant pipe changed? If not it should be done. I have seen engines damaged from these leaking coolant into the system.

How many miles? Are there any signs of the starter trying to engage? Or does it do nothing? I have seen some cases of these cars having some ghost that will sometimes not start the car and other times it starts nobody has been able to figure it out.

[olivier.r]

We had to rebruild many Cayenne engine over the last few years
All of them were damaged bank 2 cylinders
I live in quebec and winters are really bad -40 celsius
Only one was seized and the crank were always as new
I heard of one broken oil pump chain at the local porsche dealership
If you have to rebuild it install turbo oil piston squirters
Block was machined to receive it but there is a block of plate instead
Sorry for my poor english

[Cobalt]

Interesting. I have three dealerships by me all very large and I know most of the people that run them. I have discussed this with them and all claimed they have had very few needing rebuilds and in almost all cases it was due to a leaking coolant tube that wasn't repaired in a timely fashion or engine run low on oil. Maybe the colder weather creates issues for you guys up north. I know of a few 250k mile cayenne S's never needing any engine work.

[olivier.r]

We have done many and 2 are in the process 2008 s and gts
The local Classifieds always have a few advertise with knocking engine or some tries to sell it stating that it is a lifters noise
But it is always pistons rocking in cylinders ...
Porsche replacement engine are 25 k for à truck that is worth that( dfi)
The offered a short block for the 4.5 l at à round 5 k ( wich was not that bad )
But it is no longer available ( prices i started is canadian dollar)
And porsche canada replaced many engine under warranty but when it is over you are on your own
Same problèms with carrera engines...
Oli

[uttamm]

Thank you Cobalt, to get some idea from you.

My truck has 131 k miles and starter is not engaging. When I put key in ignition all lights on dash board comes on, feels like every sounds normal while sit on driver seat. But no sounds from intake for starter or any crank.

This weekend, I'll loose belt and then try to turn crank pulley whether it'll move flywheel and/or I'll open intake manifold to check starter and flywheel condition.

Any more ideas will be more welcome. I'll keep update my reply in this thread.

[uttamm]

I tried today loose tension er to spin manually, turns all of the wheels except crank pulley. Then removed intake manifold and disengage the starter from flywheel, again not able to turn crank pulley by hand.

Does it mean now engine is fully seized? Any further advice form here. Is there any other ways to check whether engine is seized?

Thanks all in advance.

[olivier.r]

Check the oil filtrer carthridge for métal particules and put à caméra in cylindres
Unfortunatly you may find were it is seize

[uttamm]

Thanks, I'll follow this step too oil / camera.

Currently I verified starter testing in the truck and / or out of the car, It's good running. While doing test for ignition / NS Switch, it seems to me ground body test not good. As I have connected a meter lead to battery and other in the unpainted body, there is no change in the voltage meter. As well I read in forum that engine body ground strap may be a culprit. Guys any one can help me out where is this ground strap. Is this Alternator to front body? where is the 6th cylinder strap. Any images will be great help.

I'm hoping if this might will help me out.

Thanks in advance to the nice people of this forum.

[uttamm]

I was wrongly described that engine seized by Indy mechanic. As I discussed at Porsche dealer, they said cayenne engine motor needs big power to turn, it's not possible to turn manually. Cobalt, you are right, Cayenne engine not easy to damage.

Good news guys, the engine cranks after replace new starter. Cayenne is running.

Thanks everyone participated in this thread.

[Cobalt]

Originally Posted by uttamm

I was wrongly described that engine seized by Indy mechanic. As I discussed at Porsche dealer, they said cayenne engine motor needs big power to turn, it's not possible to turn manually. Cobalt, you are right, Cayenne engine not easy to damage.

Good news guys, the engine cranks after replace new starter. Cayenne is running.

Thanks everyone participated in this thread.

That must be a great feeling knowing it only cost you a starter instead of a small fortune. Drive it in good health.