'87 5KTQ problems
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'87 5KTQ problems
My 5000TQ has developed a couple of symptoms that hopefully some on this forum has dealt with.
1. Idles fine while cold, but when warm idle speed goes low and erratic (200-600rpm).
2. I seem to be getting a lot of spool down noise, nothing unusual while accelerating but when I come off throttle quickly it gets loud.
Any suggestions would be welcomed.
'87 5000TQ
'00 A6 2.7TM
1. Idles fine while cold, but when warm idle speed goes low and erratic (200-600rpm).
2. I seem to be getting a lot of spool down noise, nothing unusual while accelerating but when I come off throttle quickly it gets loud.
Any suggestions would be welcomed.
'87 5000TQ
'00 A6 2.7TM
AudiWorld Senior Member
Joined: Dec 2000
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Re: '87 5KTQ problems
Couple of things to check:
1. Air leaks - how old are the hoses to/from intercooler? Pull the Michelin Man hose and inspect for minute leaks.
2. How old are your plugs/wires? When wires get age on them, the wires break down as they heat up.
Re: spool down noise, pull the lower intercooler hose and check for radial and/or axial play on the turbo impeller shaft. Excessive play may mean the turbo needs to be rebuilt.
-Steve Jensen
87 5kcstq
87 5kcstqw
1. Air leaks - how old are the hoses to/from intercooler? Pull the Michelin Man hose and inspect for minute leaks.
2. How old are your plugs/wires? When wires get age on them, the wires break down as they heat up.
Re: spool down noise, pull the lower intercooler hose and check for radial and/or axial play on the turbo impeller shaft. Excessive play may mean the turbo needs to be rebuilt.
-Steve Jensen
87 5kcstq
87 5kcstqw
Thread Starter
New Member
Joined: Aug 2000
Posts: 93
Likes: 0
Thanks for the ideas
Thanks, for the ideas.
I actually solved the random idle problem by just pulling off the idle stabilizer valve and cleaning it. It idles beautifully at a stable 800 rpm again. All other ignition and vacuum components in good shape.
I'll check the play in the turbo this weekend when I have some extra time.
I actually solved the random idle problem by just pulling off the idle stabilizer valve and cleaning it. It idles beautifully at a stable 800 rpm again. All other ignition and vacuum components in good shape.
I'll check the play in the turbo this weekend when I have some extra time.
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