My van timming is making lots of noise where the vvti gear is it start after the ingine is warm and continue for a while when i switch off the ingine and start again its comes on and then go away and its not changing out please help me thank

It could be caused by the oil control valve, it's located on the side of the cylinder head, the vvti actuator is the gear on the front of the camshaft, if it was replaced try replacing the VVTi oil control valve. It can also be caused by a worn chain tensioner.

Automatic trans? Check your fluid, could be low. Check with engine warmed on and on a level surface, engine running.

These nissan serenas with the diesel engine suffer from the camshaft timing gear locating pin wearing out ,,Do not try to start the engine but remove the timing belt then take the camshaft gear off and look on the inside where it should have a cast lug that locates the gearwheel ,fit a new gearwheel if its locating lug is worn away ,then before you fit the big bolt you drill a 4 mm hole through the gearwheel into the camshaft so the hole into the camshaft goes in anout 6/7 mm drilling in from the front of the gearwheel then make a steel pin or cut a maisonary nail down to fit then refit the bolt so the head of the flanged bolt holds the pin in this will stop it going in the futrue ,yes i know its not a recomended type of repair according to the dealer but iam a old fleet vehicle fitter and this is the sort of modification that a proper fleet mechanic would ensure was carried out .

why get a reconditioned transmission when yours is fixable for a lot less money
indicates ,
low fluid level,
dirty oil
servo/solenoid problems
have the fault codes read first for free at most auto spares shops to find the exact fault

Could be several souces:
1. Check the alternator and AC belt idler bearings. Replace as needed.
2. Check the alternator itself for noise and bearing wear. Replace the belt if needed.
3. If very cold (below 0C) the power steering pump make a lot of noise for a while (30s to 2 mins) till it all warms up.

4. If the above are OK, then the next is the timing belt idler bearings.

2004 vw 2000sdi caddy van wont start some mornings you need to wind it over before it fires, immediately after it fires you can switch off ignition and it will start first time and continue to start all day. vw dealer says no fault codes present. gloplugs renewed, new battery,fuel problem? Has anyone come accross similar problem I

the plastic cover on the airgag is distorted, you will need to replace the airbag module

1st check the the oil level and the vehicle's oil type.(owners manuel) 5w30-10w30
10w 30 is a thicker oil and could possibly be causing this.(Moves more freely through the engine heats the oil)