'87 4kq running poorly

[Huw Powell]

Those are the least likely to be the problem.

To start with the basics, go here:

http://www.humanspeakers.com/audi/timing2.htm

And skip all the stuff about advancing the timing.  There's a diagram 
showing all ten or so components in the CIS-E system.  Generally 
speaking, all can be tested fairly easily for correct function one way 
or another.

Check the easy stuff first - the grounds, the WOT and idle switches, the 
OXS output when connected, the potentiometer... and don't forget the 
"spare" fuse in the side of the fusebox!

On 1/21/2012 5:56 AM, Jay M wrote:
>
> Start off with basics....When was the last time the fuel filter was replaced? Fuel pump? Pehaps take a fuel pressure reading.
>
>
>> Date: Thu, 19 Jan 2012 07:45:39 -0600
>> Subject: Re: '87 4kq running poorly
>> From: auditony at gmail.com
>> To: AndrewBuc at staxman.net
>> CC: quattro at audifans.com
>>
>> Coule be a multitude of things, but sounds like a bad connection somewhere.
>> I'd start with checking the ECU grounds on the intake manifold. Then, just
>> wiggle things while the car is running, adn see what, if anything affects
>> it. Maybe the hall sender wiring, maybe a corroded connection on the coil,
>> maybe something else.
>>
>> Tony
>>
>> On Wed, Jan 18, 2012 at 8:53 PM, Andrew Buc<AndrewBuc at staxman.net>  wrote:
>>
>>> I should say first off that I'm almost certainly going to take the car
>>> into the shop in the next day or two rather than try to fix it myself. But
>>> given my commute, being without the car will be very inconvenient, and I'd
>>> like to get an idea of how much downtime and expense I'm likely to be in
>>> for.
>>>
>>> This all began this morning on the commute. Sometimes the car would lose
>>> speed for a few seconds, then abruptly speed back up. It got worse on the
>>> afternoon commute. I drove around a bit after getting home, and the problem
>>> has leveled off, but at a very inconvenient level. Other symptoms:
>>>
>>> The car starts fine and idles fine very briefly, then the idle becomes
>>> slow and rough, but it does keep running. It doesn't run very well on light
>>> throttle--I have to really mash it to get going from a standstill. Under
>>> way, I often find myself using a lower gear and more revs than I normally
>>> would. The temporary slowdowns followed by abrupt speedups have continued.
>>>
>>> Any insights? Thank you.
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