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a-talk said:
I finally bought a CIS fuel pressure tester after years of VAG ownership. Got around to testing control and system pressure on the '90 TQA yesterday. We had a little trouble - mostly the directions on 1) where to hook it up, and 2) what adapters to use were rubbish. No problem though, after a bit of fiddling around we got it figured out.

During the trouble, we swapped in the WUR off my parts car (just made it easier to swap connections). So, system pressure is at a respectable 6.1 bar, and warm control pressure is at 3.6 bar.

So we installed the replacement WUR since it tested OK, and now my power is back! Obviously my old WUR was bunk - we hadn't got any readings before we switched, so I don't know exactly what is wrong with it. Maybe I'll take it apart and rebuild it down the road. But for now I'm happy.

Haven't had a chance to see if my cold-start issue is any better, as it's seeping just a very little bit now at the fuel line connections on the WUR. Crappy aluminum washers! So, I've got to procure some new ones tomorrow. More later . .

Were you leaning out towards the top end while accelerating?
 

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Discussion Starter · #22 ·
I had no gauge data to verify this, but yeah, that's what it acted like. Actually, it seemed a little restricted over the whole range - the car is much more responsive again.

I popped over to the local import parts shop at lunch today and got my new copper crush washers, so I'll be back in business tonight!

oldsklaudidub said:
Were you leaning out towards the top end while accelerating?
 

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a-talk said:
I had no gauge data to verify this, but yeah, that's what it acted like. Actually, it seemed a little restricted over the whole range - the car is much more responsive again.

I popped over to the local import parts shop at lunch today and got my new copper crush washers, so I'll be back in business tonight!

oldsklaudidub said:
Were you leaning out towards the top end while accelerating?
Hmm this is very interesting.

I dont if the 90' 200's dash has it but there is a knock light on my 88 5ktq. Did you get any indication like that, with the loss of 'power/ fuel'?
 

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Discussion Starter · #24 ·
I've just recently activated my 'Check Engine' bulb, is that the light that blings on knock? I did hear some pinging the few times I took it to WOT. Since then I took it easy on the car to prevent any possible damage. I didn't actually rev the car up that hard once I had the Check light activated.

oldsklaudidub said:
a-talk said:
I had no gauge data to verify this, but yeah, that's what it acted like. Actually, it seemed a little restricted over the whole range - the car is much more responsive again.

I popped over to the local import parts shop at lunch today and got my new copper crush washers, so I'll be back in business tonight!

oldsklaudidub said:
Were you leaning out towards the top end while accelerating?
Hmm this is very interesting.

I dont if the 90' 200's dash has it but there is a knock light on my 88 5ktq. Did you get any indication like that, with the loss of 'power/ fuel'?
 

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a-talk said:
I've just recently activated my 'Check Engine' bulb, is that the light that blings on knock? I did hear some pinging the few times I took it to WOT. Since then I took it easy on the car to prevent any possible damage. I didn't actually rev the car up that hard once I had the Check light activated.

oldsklaudidub said:
a-talk said:
I had no gauge data to verify this, but yeah, that's what it acted like. Actually, it seemed a little restricted over the whole range - the car is much more responsive again.

I popped over to the local import parts shop at lunch today and got my new copper crush washers, so I'll be back in business tonight!

oldsklaudidub said:
I think that is the light. Im not 100% sure as we have different clusters but my best guess is yes that is the light in question. I am surprised you were able to hear a ping w/ this car (there is a lot of background noise w/ the T44).

Were you leaning out towards the top end while accelerating?
Hmm this is very interesting.

I dont if the 90' 200's dash has it but there is a knock light on my 88 5ktq. Did you get any indication like that, with the loss of 'power/ fuel'?
 

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Discussion Starter · #26 ·
I finally got the rear amplified speakers working with my Eclipse CD7000 head unit. You just have to use an RCA out from your aftermarket head unit to push line level signal through the stock wiring. I cut a 4" length off one end of an RCA cable pair, and spliced them into the blue w/ red stripe (L) and green w/ red stripe (R). There's only one ground going to the amp for both speakers, so I crimped the grounds from both sides of the RCA connector to the ground wire. There are two "remote on" white wires in the car - one is remote on for the amp, the other is ? (I'm assuming it's for the amplified antenna). Anyway, you'll just have to test which one turns on the amp, they're both white. Or do what I did and hook both of them up :).

Results? The rear speakers finally work, the amp turns on with the head unit, and I now have rear fill. The speakers don't sound the greatest, but it's better than the crappy, "free-air" 4" set I have crammed in the dash w/ absolutely NO bass response. It'll work for now, but a bigger, better stereo is definitely in the works :D.

(FYI - My car did not come with Bose audio)
 

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Discussion Starter · #27 ·
Just scored five Amsoil oil filters for my 200 last night. This guy had retired from some parts company and has these as NOS. All five for $20!
 

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Discussion Starter · #28 ·
I finally got myself a full set of Bentley manuals, plus the 100/200 Service Training booklet. Thanks to 'trafficjamz'!

Hmm, what's the correct resistant range for a WUR? (flip, flip flip . . .)
 

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Discussion Starter · #29 ·
My friend at work saw me pull in this morning, and commented on how the Audi looks good with the tint, and the roof rails pulled off. Sleek. She called her the 'Red Bandanna' . .
 

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Discussion Starter · #30 ·
I had to replace the thermostat after only nine months - crappy Auto-Buddy thermostat! Oh well, it gave me time to do a proper coolant system flush. New coolant sensors too, and a quick polish of the water manifold :) (on an otherwise crusty-lookin motor . .)

This helped my cold start issues - guess my sensors were bad after all, even though they had tested good before.
 

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Discussion Starter · #31 ·
Haven't updated in awhile, but I've been busy w/ the car. Two weeks ago was the IAT:

Well I wasn't getting a code for it, but the card drove like it was running too lean (again!). So, after tons of research, I followed the advise at sjmautotechnik.com, pulled out my spare IAT from the parts car and went to work. I tested the resistance values with a hair dryer :), and the readings looked good. I removed the soldered leads, cleaned up the terminals on the IAT, soldered 7/32" quick-connects onto the existing wiring in the car, covered them in heat-shrink tubing, and then installed the replacement IAT. And wala! The car runs good again, pulls hard to 1.8bar, and drives like it should.

Then next was my knock sensors:

After replacing the IAT, I was getting a 2144 code, and I could feel the timing being retarded at full throttle past 3k RPM (haha - timing being retarded :p). I had one pristine spare knock sensor, and scored a second one off eBay for $20 NOS! Installed them both and all is well again. For now . .

FYI, the old IAT tested good too. So I don't know if A) the solder connections to the IAT were bad from age, or B) the old IAT was failing intermittently, though I didn't see any cracks in the solder joints from the resistor to the terminals. But the car has gone a good two weeks on the replacement sensor with no issues and no codes - yay! :)
 

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Discussion Starter · #32 ·
Oh yeah - Saturday she stranded me for the first time! I didn't pull codes correctly for the no-start condition so I don't have any info, but after 45 minutes she magically started like nothing happened! I cleaned the reference sensors (20 years of crap on 'em), so I'll just have to wait until she dies again to troubleshoot correctly.

I love my car - :bashtard: - I love my car
 

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a-talk said:
I finally bought a CIS fuel pressure tester after years of VAG ownership. Got around to testing control and system pressure on the '90 TQA yesterday. We had a little trouble - mostly the directions on 1) where to hook it up, and 2) what adapters to use were rubbish. No problem though, after a bit of fiddling around we got it figured out.

During the trouble, we swapped in the WUR off my parts car (just made it easier to swap connections). So, system pressure is at a respectable 6.1 bar, and warm control pressure is at 3.6 bar.

So we installed the replacement WUR since it tested OK, and now my power is back! Obviously my old WUR was bunk - we hadn't got any readings before we switched, so I don't know exactly what is wrong with it. Maybe I'll take it apart and rebuild it down the road. But for now I'm happy.

Haven't had a chance to see if my cold-start issue is any better, as it's seeping just a very little bit now at the fuel line connections on the WUR. Crappy aluminum washers! So, I've got to procure some new ones tomorrow. More later . .

What exactly do you mean by WUR? something something regulator?
 

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Discussion Starter · #35 ·
Yup, warm-up regulator. Don't have a good picture of it, but it sits on the driver's side of the block, and two braided fuel lines run to it. It controls the fuel pressure as the car warms up.

Here's a pic of one off the car, borrowed from PelicanParts.com (some older Porsches run CIS too):



dustin4kq said:
warm up regulator
 

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Discussion Starter · #36 ·
Forgot to post these, but my girlfriend got me this for Christmas :-D
 

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Discussion Starter · #38 ·
Hmm, well, it's been a busy year. My daughter was born last August. So there's was plenty of moving and prep before that. And now there's more moving and prep as we shop for our first house (hopefully with a GARAGE, thank you! :D).

Right now, I'm finishing up rebuilding the PS system. All hoses were replaced (ouch - pricey!), the pump X caps were resealed, and I'm installing new tie rods and a steering damper upgrade. Since my last update, I've also done new reference sensors, 034 silicone breather hoses, plug wires, and a new cold start valve. Oh, and I removed the roof rails and installed a car seat base :). I've got more update plans for this car in the future, but right now I need a good working space before I can start tearing in. The Porsche has taken more than it's share of wrenching time this past year, the needy bitch! :D

Here are a few pics I took right before I started the PS rebuild:
 

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