[T3] I've got another question , same one I asked a while back.

William Jahn willjahn975 at gmail.com
Tue Jul 17 14:40:50 PDT 2018


Anyone? I just need suggestions.

William

On Sun, Jul 15, 2018 at 2:03 PM, William Jahn <willjahn975 at gmail.com> wrote:

>  I noticed when I was fixing the cold start valve hose in the parking lot
> that I have the temp sensor in the IAD un plugged . I did this because if
> it was plugged in the engine struggled between 1000 RPM and 2200 RPM if it
> was in park. By struggle I mean the rpm was not a smooth climb it would
> sort of hang and drop between the rpm range above. It also had a miss fire
> at idle , not a back fire but an erratic miss .
>
>  When I drove it I didn't feel any miss yet heard slight popping out the
> exhaust when I let off the gas.
>
>  I know the right Empi header to the right heat exchanger leaks I can hear
> and feel this and that may be the popping I hear . ON that miss i can't
> imagine that is related to the exhaust leak and I saw this because it's
> been leaking there for 20 years and didn't have that erratic miss or
> struggle between those RPM ranges .
>
>  I know it has the proper ECU and throttle switch  and pressure sensor
> since Jim provided that info. I also checked every engine ground and redid
> all and that seemed to help for a while then it was right back doing this.
> I also know all a vacuum leak really does is allow more air and as far as I
> know does not make for a richer mixture unless the leak is at the intake
> gaskets and injector seals . I do know all for runner short hoses are oily
> , I have new ones yet not the intake gaskets .
>
>  I have read one can replace the paper on the intake spacer . I thought of
> pushing back the old oily short hoses and removing the IAD without removing
> the runners . It's possible yet does not look easy .
>
>  Basically what I'm asking is should I repair the exhaust leak first then
> see and it this doesn't help go for the short hoses and replace all the
> vacuum lines off the IAD . If I could get two FI intake spacer/gaskets I
> would go that route . I don't think the old ones are cracked and may be
> able to just make new paper gaskets.
>
> William
>
>
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