HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Slow return to idle after rev

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Slow return to idle after rev

Post  endrnet on Sun Apr 25, 2010 4:29 pm

Title says it all. Idles normal, but after a quick rev it doesn't come down right away. More like after 5 seconds it starts to lower RPM, but doesn't go all the way back to startup/idle RPM.

Some things I'm suspecting:

1) PCM needs time to learn the motor?
2) Lack of VSS signal confusing PCM?
3) Bad (brand new) IAC?
4) I need to let it reach full operating temp?

Dunno the RPMs involved yet, still need to find the tach signal wire without ripping the dash out.
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Re: Slow return to idle after rev

Post  Admin on Sun Apr 25, 2010 5:43 pm

Tach wire is behind the gauge cluster, just get it!

As far as the RPM problem, is that happening at a standing rev, or while you are driving?
If it happens while driving and coming to a stop, it's the missing VSS. The ecu has to know if the car is moving or not. It's just confused!

It if is happening at a standing rev , could be a stuck PVC, but more likely a possible vacuum leak.

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Re: Slow return to idle after rev

Post  endrnet on Sun Apr 25, 2010 6:28 pm

It's happening at a standstill, not quite ready to set it down on wheels, indeed there are no front wheels right now.

The gauge cluster is not a friendly place, how much of it do I have to tear apart? Does the whole dash have to basically come out?
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Re: Slow return to idle after rev

Post  Admin on Sun Apr 25, 2010 8:04 pm

It's a 15 or 20 minute just at the most. Just pull the steering wheel, pull the gauge surround and then pull the four screws that hold in the cluster. pull out on the cluster and tap onto the wire and your done.

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Re: Slow return to idle after rev

Post  endrnet on Sun Apr 25, 2010 8:24 pm

Ah that WAS quick. So this the right lug? (red circle)

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