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Showing results 1 to 25 of 53
Search took 0.01 seconds. Search: Posts Made By: John Speake
Forum: Porsche 928 Technical Forum 10-11-2013, 10:23 AM
Replies: 40
Views: 4,920
Posted By John Speake
Hi Blaize..... just found your thread on...

Hi Blaize..... just found your thread on here..... does the voltmeter still vary when you hit the throttle ?
Forum: Porsche 928 Technical Forum 04-12-2013, 09:08 AM
Replies: 13
Views: 735
Posted By John Speake
OK, I saw the video.... the MAF hot wire has...

OK, I saw the video.... the MAF hot wire has three sides. However if it was broken, that would be the same as disconnecting it for "limp home mode". So it doesn't seem that is the problem.

Try...
Forum: Porsche 928 Technical Forum 04-12-2013, 07:19 AM
Replies: 13
Views: 735
Posted By John Speake
If you do have LH injection, the unplug the MAF...

If you do have LH injection, the unplug the MAF and start the engine. It then works in "limp home mode". It should start and idle pertty well, it won't be driveable but it will confirm the problem...
Forum: Porsche 928 Technical Forum 04-12-2013, 01:35 AM
Replies: 13
Views: 735
Posted By John Speake
As it is the crossover year from k Jet to L-Jet,...

As it is the crossover year from k Jet to L-Jet, I just wanted to be sure it really is an LH car.
Forum: Porsche 928 Technical Forum 04-11-2013, 12:14 PM
Replies: 13
Views: 735
Posted By John Speake
Is it a twin dizzy Euro ?

Is it a twin dizzy Euro ?
Forum: Porsche 928 Technical Forum 06-27-2011, 06:41 AM
Replies: 49
Views: 6,896
Posted By John Speake
Good post Landseer :-)

Good post Landseer :-)
Forum: Porsche 928 Technical Forum 06-27-2011, 04:27 AM
Replies: 49
Views: 6,896
Posted By John Speake
Your 84 Euro with LH and EZ-F ECUs doesn't have a...

Your 84 Euro with LH and EZ-F ECUs doesn't have a green wire, that only applies to US L-Jet cars of that MY.

You won't hear the fuel pump running, as with the Fuel pump relay is only energised...
Forum: Porsche 928 Technical Forum 09-02-2010, 03:40 PM
Replies: 31
Views: 2,721
Posted By John Speake
It's also possible to remap the Euro16v for more...

It's also possible to remap the Euro16v for more power. They also are very conservative on igntion timing the same as the 85-86 32v.
Forum: Porsche 928 Technical Forum 05-21-2010, 07:52 AM
Replies: 6
Views: 2,221
Posted By John Speake
Hi Normy ! The book idle pressure is 29psi. So...

Hi Normy !
The book idle pressure is 29psi. So you're close.
Forum: Porsche 928 Technical Forum 05-19-2010, 01:29 AM
Replies: 73
Views: 9,005
Posted By John Speake
Although there's a sensor in each cylinder head,...

Although there's a sensor in each cylinder head, each ignition protection circuit controls cylinders on both heads.

A RED LED lit means a problem on cyl 1-4-6 & 7
A GREEN LED lit means a problem...
Forum: Porsche 928 Technical Forum 05-07-2010, 08:54 AM
Replies: 73
Views: 9,005
Posted By John Speake
Pull back the boots on all 8 injector connectors...

Pull back the boots on all 8 injector connectors and inspect for bare wires touching each other.
Forum: Porsche 928 Technical Forum 04-20-2010, 10:02 AM
Replies: 12
Views: 1,092
Posted By John Speake
Get well quickly Dave !

Get well quickly Dave !
Forum: Porsche 928 Technical Forum 04-16-2010, 02:01 AM
Replies: 10
Views: 2,066
Posted By John Speake
Sounds like a bad MAF to me.

Sounds like a bad MAF to me.
Forum: Porsche 928 Technical Forum 04-14-2010, 03:42 AM
Replies: 8
Views: 652
Posted By John Speake
Dr Bob is 100% correct. However on your 89 car...

Dr Bob is 100% correct. However on your 89 car the CO adjuster is above the middle of the fuse/relay board. It is a slotted adjuster in a plastic "snout".

Use the adjuster to set the idle CO at...
Forum: Porsche 928 Technical Forum 04-13-2010, 07:43 AM
Replies: 6
Views: 1,668
Posted By John Speake
Testing MAF resistances tells you there isn't a...

Testing MAF resistances tells you there isn't a gross error, but nothing more. All the tolerances are taken out on calibration, which needs to be better than 1% of rated output values for good...
Forum: Porsche 928 Technical Forum 04-12-2010, 09:43 AM
Replies: 6
Views: 1,668
Posted By John Speake
Until the engine water temp gets to about 70degC...

Until the engine water temp gets to about 70degC the engine is running "open loop" and the fuelling is critically dependant on MAF calibration.

Once the water temp rises to 70, the LH ECU switches...
Forum: Porsche 928 Technical Forum 04-08-2010, 02:57 AM
Replies: 13
Views: 742
Posted By John Speake
You have it correct. The pin slide in and lock...

You have it correct. The pin slide in and lock ffrom the back.

You cut off the old conector, strip back the cableform until you have sound insulation on the wires. Make sure you note which clour...
Forum: Porsche 928 Technical Forum 04-07-2010, 02:07 AM
Replies: 13
Views: 742
Posted By John Speake
The kit come with the connector body, 6 pins and...

The kit come with the connector body, 6 pins and the rubber boot. You have to wire it yourself.
Forum: Porsche 928 Technical Forum 04-06-2010, 12:43 PM
Replies: 13
Views: 742
Posted By John Speake
I can supply the MAF connector kits. But I have...

I can supply the MAF connector kits. But I have also supplied Roger Tyson at 928sRus, so you can probably get one from him.
Forum: Porsche 928 Technical Forum 10-11-2009, 12:35 PM
Replies: 12
Views: 1,247
Posted By John Speake
Hi John Managed to watch part 1 :-) Then I...

Hi John
Managed to watch part 1 :-) Then I get "bad response from server" and I can't see the other parts.....
Forum: Porsche 928 Technical Forum 10-01-2009, 03:56 PM
Replies: 25
Views: 4,191
Posted By John Speake
The Mk 1 SharkTuner has a LH2.2 and EZ-F option...

The Mk 1 SharkTuner has a LH2.2 and EZ-F option that allows you to fully tune a stock or supercharged or turbo'd Euro 16v (or US/Euro 32v 85/86). There's also a SMAF option for these early LH cars.
...
Forum: Porsche 928 Technical Forum 07-04-2009, 02:00 AM
Replies: 10
Views: 816
Posted By John Speake
Hi Normy, the supply voltage to the MAF is 12v....

Hi Normy, the supply voltage to the MAF is 12v. The supply current involved varies as the airflow increases, but it's not mopre than a couple of amps.

The contacts on the MAF are tin plated,...
Forum: Porsche 928 Technical Forum 07-03-2009, 01:59 AM
Replies: 10
Views: 816
Posted By John Speake
Hi Normy, Well, you will have taken the plating...

Hi Normy,
Well, you will have taken the plating off the MAF pins, but they should be OK if they are clean. Add some vaseline or dielectric grease for protection.

Do they look corroded when you...
Forum: Porsche 928 Technical Forum 07-02-2009, 09:50 AM
Replies: 10
Views: 816
Posted By John Speake
You still having that problem Normy ? Have...

You still having that problem Normy ?

Have you tried just disconnecting the battery ground for a few seconds ?
Forum: Porsche 928 Technical Forum 01-28-2009, 10:10 AM
Replies: 55
Views: 8,243
Posted By John Speake
Hi Mike With 15 degrees of overlap you may get...

Hi Mike
With 15 degrees of overlap you may get some reversion back into the MAF at idle ? Do you intend to raise the idle speed to get out of the zone where the MAF is confused by the back pulse ?
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