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Search: Posts Made By: gtroth
Forum: Porsche 924/944/968 Technical Forum 06-25-2019, 05:26 PM
Replies: 8
Views: 2,711
Posted By gtroth
I think that idle behavior is consistent with a...

I think that idle behavior is consistent with a broken idle control valve (i.e. not opening to allow more air when cold and idling). i'm afraid I'm not as familiar with the 8V idle systems since the...
Forum: Porsche 924/944/968 Technical Forum 06-21-2019, 06:58 PM
Replies: 8
Views: 2,711
Posted By gtroth
When it is idling is it idling at the right...

When it is idling is it idling at the right speed? Might be set to low.
Or maybe the idle valve is broken and not giving the extra air needed by the cold engine.
For completeness I'd check the...
Forum: Porsche 924/944/968 Technical Forum 06-21-2019, 06:32 PM
Replies: 13
Views: 2,254
Posted By gtroth
I'd take a longer look into the AFM. My 'S would...

I'd take a longer look into the AFM. My 'S would cut out intermittently when it was very cold out and car had warmed up. A little similar. My AFM looked good and measured good, but replacing it...
Forum: Porsche 924/944/968 Technical Forum 12-03-2016, 12:40 PM
Replies: 9
Views: 932
Posted By gtroth
Automation (ecklers) used to have them for our...

Automation (ecklers) used to have them for our cars, but I don't see them anymore.
Honestly, 944s are way too sexy for mud flaps.
Forum: Porsche 924/944/968 Technical Forum 11-24-2016, 12:35 PM
Replies: 9
Views: 910
Posted By gtroth
Mazda Cosmo must be mentioned when discussing...

Mazda Cosmo must be mentioned when discussing rotary engines....

https://en.m.wikipedia.org/wiki/Mazda_Cosmo
Forum: Porsche 924/944/968 Technical Forum 02-21-2016, 08:55 AM
Replies: 17
Views: 710
Posted By gtroth
As usual in stories like this, it all comes down...

As usual in stories like this, it all comes down to the clutch.
If it needs a clutch, budget $2500 for it.
Forum: Porsche 924/944/968 Technical Forum 01-05-2016, 05:32 PM
Replies: 2
Views: 262
Posted By gtroth
Sounds like air in the system. Bleed it a lot and...

Sounds like air in the system. Bleed it a lot and report back.
Forum: Porsche 924/944/968 Technical Forum 12-28-2015, 03:59 PM
Replies: 32
Views: 1,716
Posted By gtroth
No such thing as a 16V 2.7

No such thing as a 16V 2.7
Forum: Porsche 924/944/968 Technical Forum 12-28-2015, 01:28 PM
Replies: 12
Views: 747
Posted By gtroth
Pentofrost NF...

Pentofrost NF (http://pentosin.net/pressreleases/CRP-116_Pentofrost_NF_2.pdf) is perfect.

Audi/VW ZVX 237 105 = Pentosin G001100 = Pentofrost NF = G11 = blue.
Forum: Porsche 924/944/968 Technical Forum 12-28-2015, 01:15 PM
Replies: 20
Views: 1,370
Posted By gtroth
You might double check that your throttle is...

You might double check that your throttle is actually always closing all the way. When I rebuilt my throttle body, I reinstalled the throttle disk ('butterfly') slightly misaligned and it would...
Forum: Porsche 924/944/968 Technical Forum 12-28-2015, 12:17 PM
Replies: 7
Views: 981
Posted By gtroth
I like to loosen the clutch until it can no...

I like to loosen the clutch until it can no longer lift the roof and then tighten it until it just barely can lift the roof. Safest adjustment for the gears.
Forum: Porsche 924/944/968 Technical Forum 07-11-2015, 10:22 AM
Replies: 12
Views: 879
Posted By gtroth
Since it's easy, I guess I'd measure the temp...

Since it's easy, I guess I'd measure the temp sensors' resistances (NTC1 and NTC2). DME might think the engine is warm when it is cold so it won't execute cold enrichment, or it might think the air...
Forum: Porsche 924/944/968 Technical Forum 10-23-2014, 06:53 PM
Replies: 7
Views: 584
Posted By gtroth
I'd be focussed on the AFM too. The dimming...

I'd be focussed on the AFM too.
The dimming dash lights sounds like a ground problem. Clean them, especially the two at the back of the engine. Does your temp gauge jump when you turn on your...
Forum: Porsche 924/944/968 Technical Forum 10-12-2014, 04:49 PM
Replies: 28
Views: 1,556
Posted By gtroth
I'd find the unmetered air causing your high idle...

I'd find the unmetered air causing your high idle (vacuum leak or stuck open ISV).
And I always suspect the AFM since my severe hesitation problems were ultimatley solved by replacing the AFM.
Forum: Porsche 924/944/968 Technical Forum 09-06-2014, 05:04 AM
Replies: 69
Views: 2,533
Posted By gtroth
You asked why it was less safe, and lack of...

You asked why it was less safe, and lack of proper testing and the resulting uncertainty makes it less safe. This is not a new concept made up in this thread, this is just the way people who...
Forum: Porsche 924/944/968 Technical Forum 09-05-2014, 02:47 PM
Replies: 69
Views: 2,533
Posted By gtroth
Yours was not tested by professional safety...

Yours was not tested by professional safety engineers.
Forum: Porsche 924/944/968 Technical Forum 08-29-2014, 04:41 PM
Replies: 44
Views: 2,123
Posted By gtroth
Yeah, hvac and ergonomics are way better in the...

Yeah, hvac and ergonomics are way better in the 944, no doubt. And the hatch area is really useful.
I drive the Carrera daily, but when I switch to the S for a week or so I realize how much I miss...
Forum: Porsche 924/944/968 Technical Forum 08-29-2014, 04:22 PM
Replies: 44
Views: 2,547
Posted By gtroth
I really don't think that would be enough, dj. ...

I really don't think that would be enough, dj.
A car wash with under spray after every storm and at least every 2 weeks I'd say.
Forum: Porsche 924/944/968 Technical Forum 07-22-2014, 06:56 PM
Replies: 12
Views: 988
Posted By gtroth
Yeah, do not even try an easy out. Try the...

Yeah, do not even try an easy out. Try the bolt-out liked above if there's something to grab.

You might also try this stud puller...
Forum: Porsche 924/944/968 Technical Forum 07-22-2014, 06:36 PM
Replies: 12
Views: 988
Posted By gtroth
No, I'm talking about the 16V. See the flange...

No, I'm talking about the 16V. See the flange just above the threads on (14) and (15)? That's what I grab with a bolt-out when these break.
...
Forum: Porsche 924/944/968 Technical Forum 07-22-2014, 10:59 AM
Replies: 44
Views: 2,547
Posted By gtroth
I'm a well seasoned snow driver, and I drove the...

I'm a well seasoned snow driver, and I drove the 'S' through many New England winters on Pilot Sport Alpins and it handled just fine but was surprisingly easy to get stuck (no LSD). No signs of body...
Forum: Porsche 924/944/968 Technical Forum 07-22-2014, 10:45 AM
Replies: 12
Views: 988
Posted By gtroth
The cover bolts should have a flange above the...

The cover bolts should have a flange above the threads that is against the head when tight, maybe 13mm in DIA, and ~3mm high. That's about perfect for a bolt-out to grab. Are you seeing something...
Forum: Porsche 964 & 993 Technical Forum 07-12-2014, 11:16 AM
Replies: 4
Views: 585
Posted By gtroth
Yup, this is it. Real obvious-should have looked...

Yup, this is it. Real obvious-should have looked at it before posting.

Looks straightforward to fix. Any gotchas?
Forum: Porsche 964 & 993 Technical Forum 07-12-2014, 06:36 AM
Replies: 4
Views: 585
Posted By gtroth
Sunroof won't quite close

Sunroof moves fine forward and backward, but since last night it gets to within 1 inch of being closed and stops.

Any ideas?

Cheers.
Forum: Porsche 924/944/968 Technical Forum 05-22-2014, 05:49 PM
Replies: 5
Views: 339
Posted By gtroth
Hard to know, but quite a few 'I have a...

Hard to know, but quite a few 'I have a problem...I know the battery is good..." stories end up as a bad battery after all, so I'll go ahead and ask: how sure are you it's good?

And you say slow...
Showing results 1 to 25 of 500

 
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