pick your brains

[sideshowstimp]

just got my gpx back after months of toil and troubles but still no mivec, was wondering how long does it take to warm up enough for mivec action?

[Bernard]

About 10 minutes of driving.

[Dragonheart]

Once my car has ran for about 5 minutes, its probably a coincidence but its the amount of time it takes the engine temperature needle to hit the middle mark, then its ready.

[optical illusion]

As above, me too.

[sideshowstimp]

thats not good news have had new alternator, plugs, leads, oil and more work too great to have car back but mivec doesn't kick in any ideas anyone please
cheers stimp

[Dragonheart]

And its definately a GPX not a GR is it?

[Sebastian]

it happened before , might be an alternator problem.

can you find a spare to replace and try ?

[Kace]

If you run the car and then disconnect the negative terminal from the battery does the car still keep going ?

Only issues I have ever seen with Mivec not kicking in have been alternator related - so try this out again and let us know.

[sideshowstimp]

thanx for reply's. Its a brand new alternator just went in sat, the engine feels and sounds like its gonna go more then backs off about 5,500 rpm. will try taking neg term off. the car is 2.0 v6 says gpx on back

[richardc9052]

Is it a 4 pin altenator?

[sideshowstimp]

yep is four pin

[steelroe]

It is either a dodgy alternator or engine temp sensor. I the alt new or a recon. Did you by chance buy it on ebay??
The sensor for the temp gauge does not control the mivec, the sensor for the gauge is the single wire connector next ot the stat housing.
The sensor for the engine control is the further back behind the stat housing, 2 pin connector.

See drawings below.
First one shows temp gauge sensor (1 wire)
second one shows the sensor to the engine ECU

[sideshowstimp]

thanx again, yes got from ebay but is brand new. Before it was put in, the car would bounce of the rev limiter now it just starts to choke but around the same point limiter would kick in.
cheers stimp

[sideshowstimp]

hows everyone? following on: took the car out after work today was showing fault code 24 could this be the reason for all my troubles? after the fuel guage dropping below 1/4 of a tank it wasn't liking revving past 4,000 but in neutral would rev past 7,000 is this a light at the end of my dark mivec tunnel?
cheers stimp

[paul2508]

hows everyone? following on: took the car out after work today was showing fault code 24 could this be the reason for all my troubles? after the fuel guage dropping below 1/4 of a tank it wasn't liking revving past 4,000 but in neutral would rev past 7,000 is this a light at the end of my dark mivec tunnel?
cheers stimp

is that the vehicle speed sensor??

[sideshowstimp]

yes think so

[steelroe]

Just to clarify are you talking Engine code or Automatic transmission code here. Which ligh on the dash were you counting the code from.

[steelroe]

[sideshowstimp]

thanx steelroe topped the oil up filled the tank n she roared to 8,000 revs i was over the moon, do you think fuel filter could b a problem?
stimp

[steelroe]

How low was the oil? The MIVEC works off of oil valves in the engine.

[sideshowstimp]

Yeah oil was pretty low! yet to go lower than quarter of tank of fuel had problems with this before