Bill Ball

Dwayne shows a clamp. PET shows a clamp. But I've always found it w/o a clamp. This molded hose isn't stretched that much over the fitting as this one looks. It's worked on snugly but with little stretch tension. Even real old factory originals I've seen haven't looked like this (as pics of the old ones above show). If anything the hose takes a set and gets a bit loose rather than splitting like this. Hope they don't have a bad batch.

Leon Speed

Yup, me too. Looks weird like it's moulded or something.

the flyin' scotsman

For completion:

the bad.....the split hose caused all sorts of bad idling issues especially when stone cold, when warm it idled fine but high. The car has also 'smelled' rich despite having the injectors rebuilt and other intake work but it is run with no cats and no air pump.

the solution......the intake is now fully rebuilt, again and to be super **** the rear fuel damper, the fuel regulator and the fuel injectors (4 hole Ford) were replaced as were the ISV and TPS, throttle plate brgs, cables, gaskets etc etc.

the great......the car now idles perfect, smooth and without the rich smell. Its now +10 years that I've owned it at cant recall it running better.

Looking forward to a great driving spring, summer and fall.

BTW.....I didn't buy the Camaro

oups59

Malcolm,

Did you buy the injectors in Canada ?

the flyin' scotsman

Roger supplied all parts Luc

SteveG

No happy solution to this --I just spent the better part of a Sun afternoon replacing a dead high tone horn in the pass wheel. How much use could the horn have endured in this car??? 67,000 of the miles were in California. Absolutely clean and dry in the compartment. Shiny connectors uder their boot; I cleaned them, still dead. It's what we do, I guess.

New horn = $54, Pep Boys = $19. I might have paid the $$, but with all the hassle, I went with PBoys and got it done in one aft.

worf928

FWIW, I pulled a split ISV hose out of a '91 a couple of weeks ago. It was a year old.

So, I too have to wonder if there was a bad batch of those ISV hoses.

When I put the new one on I heated it up first, so that it was very pliable and then clamped it - but not too tight.

SeanR

When I saw that mine had split, I figured it was along the mated parts, mine didn't split there. I also didn't clamp it down when I installed it. Did the last time though.

Lizard928

Is it possible that the new hose is slightly shorter as Porsche wanted the ISV to be slightly moved so that it was easier to pull the plug off it? And that no readjusting the location of the ISV is putting too much pressure on that hose?

worf928

Never heard that one before. Source?

Edit: never mind what I deleted.... nothing to see here.

Bill Ball

Happily, I have never had to replace mine, but I can think of a few cars I have worked on that might be having a problem around now. ARGH!

Lizard928

Dave C,

That was me looking at SeanR photo and thinking as to what might have happened.

SeanR

Colin, yes, it is by 1/2 inch. Brought that up with Roger to have a chat with Porsche about. Hence the reason I stuck my original back on.

928mac

I guess what we learn from this is that quality dose count, even when it comes to something as simple as a hose.
Even at the dealer we found a lot of fraud parts, they normally come in a "white box" with no brand name markings.

Glad you got yours up and running Malcolm.

Lizard928

SeanR,

thank you for confirming on that.

Now the question remains, I know that you can loosen and then adjust the location of the clamp on the ISV. Is there enough room to move it 1/2" without interfering with something else?

Do you know that answer Sean?