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throttle body whistle?

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Old 02-09-2016, 12:11 PM
  #31  
James Bailey
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Originally Posted by Z928328
thanks for the suggestions. I'll be printing this.

But today I was driving the car around town to get a pizza. Suddenly when I was reversing into my garage- The car was shaking- The RPM went down but it didn't stall. I rev it up- The engine felt like no power. I did a drive again- The engine felt no power at all when accelerating(limp mode?) & when I stop at the junction- The car shakes. I drive back home- & let it idle for few minutes- It shakes but didn't stall.

So this no power engine, car shakes, related to the whistling?

Makes me wonder what if I didn't change the manifold gasket- I will not encounter this headache?
Your car is probably running on 4 cylinders .One of the two ignition systems is not working so two cylinders on each side are not firing. That makes it rough and low on power. Driving like that is very hard on the driveshaft according to Porsche and may cause it to break.
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Old 02-09-2016, 12:29 PM
  #32  
FredR
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Originally Posted by Adk46
I couldn't get the 2-to-4-inch rubber pipe reducer to fit over my MAF. I am aware that pipes have OD's different from nominal, but I thought all "4-inch" pipe had the same OD regardless of schedule. Is there a plumber in the house?
Curt,

Not that it is too relevant to the thread but for your interest, if we are talking about "real pipe" as in what we use in the oil industry the diameter is based on an API sizing convention wherein what is known as a "standard wall" pipe is sized such that the internal diameter is the same as the nominal pipe size for that specific wall thickness class. This applies to sizes up to 14 inches diameter and then for sizes 16 inch and greater the nominal size relates to outside diameter. I have no idea why this should be the case- just know that it is.

I dare say the stuff used in domestic plumbing is probably different altogether.

Rgds

Fred
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Old 02-09-2016, 12:32 PM
  #33  
SeanR
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Check for a split in the hose that goes from the ISV to the MAF boot.
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Old 02-09-2016, 12:39 PM
  #34  
OTR18WHEELER
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For comparison purposes, but may not be the exact same issue.
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Old 02-09-2016, 12:45 PM
  #35  
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That one turned out to be one of the two gasket # 6 (lower Intake to upper) seals.

Also running on 4 cylinders can result in a CAT fire, do not run engine more than a few min's get a timing light and check for spark to all 8 plugs.
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Old 02-09-2016, 01:12 PM
  #36  
FredR
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Originally Posted by davek9
That one turned out to be one of the two gasket # 6 (lower Intake to upper) seals.

Also running on 4 cylinders can result in a CAT fire, do not run engine more than a few min's get a timing light and check for spark to all 8 plugs.
Dave,

I may be wrong but I seem to remember this GTS is like mine- open loop [i.e. no cats]. Perhaps the OP can confirm.

Rgds

Fred
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Old 02-09-2016, 01:23 PM
  #37  
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Originally Posted by OTR18WHEELER
For comparison purposes, but may not be the exact same issue.
https://youtu.be/j5Vjz8ibxc4
you have 8 screaming little girls in that engine! time for a exorcism
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Old 02-09-2016, 01:44 PM
  #38  
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Originally Posted by FredR
Dave,

I may be wrong but I seem to remember this GTS is like mine- open loop [i.e. no cats]. Perhaps the OP can confirm.

Rgds

Fred
Not sure what he's running, just saying if the car does have CAT's watch out

This clean '87 wasn't so lucky, however it is back on the road all cleaned up, can anyone spot the cause, it's in the picture
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Old 02-09-2016, 03:43 PM
  #39  
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Originally Posted by davek9

This clean '87 wasn't so lucky, however it is back on the road all cleaned up, can anyone spot the cause, it's in the picture
Seemingly a fuel fire at the back of the engine bay- possibly the line to the fuel cooler ruptured?

Rgds

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Old 02-09-2016, 03:48 PM
  #40  
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Originally Posted by FredR
Seemingly a fuel fire at the back of the engine bay- possibly the line to the fuel cooler ruptured?

Rgds

Fred
It was a CAT fire, so CAT's full of raw fuel, think of ignition issues, hint: something doesn't belong in this picture and was installed
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Old 02-09-2016, 03:48 PM
  #41  
MainePorsche
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Don't see the rear FPR. Metal connection to it had fractured or the like ?
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Old 02-09-2016, 04:17 PM
  #42  
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Nope the car was getting Fuel, but only 4 spark plugs working hint hint, look for something that was "added"
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Old 02-09-2016, 05:05 PM
  #43  
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Ok enough thread hijacking...
Look by the left side coil, a Relay was installed by an Alarm co. to kill the ignition, however I guess they didn't see the other coil on the right side

Faulty/poor wiring done by the installer and zap, no spark to 4 of 8 cylinders = CAT fire!
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Old 02-09-2016, 05:48 PM
  #44  
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Oh my that is really, really bad.... criminal or at least negligent !! But the owner did continue to drive it when it was running like crap and way down on power....." got to make it home, got to make it home"
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Old 02-09-2016, 05:57 PM
  #45  
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I spotted the relay, but couldn't figure out where it would come into play.

Interesting development.

Brian.
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