forum.group44.de | DAS Audi 100 & 200 (C3/C4/Typ44, A6 C4) Forum – Technik, Teile, Erfahrungen.

Die englische Version der Frage
One of problems, it what very for a long time to be got{started} (approximately 5 seconds), when the engine HOT! And when the engine COLD to be got{started} at once (is normal)! It seems to me, what is it the gauge of temperature of a refrigerating liquid has broken (that gauge which gives the information to system of ignition and injection of fuel, instead of on the instrument panel), therefore, at start of the engine, the starting atomizer (which should work only at the cold engine) begins job! Therefore the fuel mix turns out enriched and the warm engine to be got{started} for a long time! Whether rights I? Prompt, please, that else can be?

Die deutsche Version der Frage

Eines der Probleme, es, (ungefähr 5 Sekunden), wenn den Motor HEISS was sehr lange geführt zu werden! Und wenn den Motor KALT, sofort so geführt zu werden ist () normal! Mir scheint es, dass es ein Sensor{Geber} der Temperatur der Kühlflüssigkeit ist wurde (jener Sensor{Geber} der zerbrochen gibt die Information dem System der Zündung und der Abspritzung des Brennstoffes, und nicht auf das Gerätepaneel), deshalb, bei dem Start des Motors, beginnt die Arbeit die Startdüse (die soll nur bei dem kalten Motor) arbeiten! Als dessen Ergebnis die Brennstoffmischung erhalten bereichert und den warmen Motor wird, lange geführt zu werden! Ob der Rechte ich? Sagen Sie, bitte vor, was noch sein kann{darf}?

Privet Smirnov,

there could be a few reasons for the hot start problem.

- single Temp. sensor near the hydraulic pump defective and/or broken wire
- fuel injectors leaking / residual pressure too high
- worn fuel pump relay
- fuel filter very old
- air/fuel mixture out of tune

The cold start valve (starting atomizer) could be activated, if the engine thinks, that its´cold. This will happen, when the single temp. sensor ist defective or not connected - Audi part number is 049 919 501.
There are two of them located near the coolant outlet/hydraulic pump at the cylinder head.

Do you know, how to activate the fault code readout?
If not, you may read www.sjmautotechnik.com for further information.
It´s one of the best websites for Audi 100 turbo - written in english though.

I have the russian Audi 100 manual for download on my website - here ist the link: http://www.audi100-online.de/sonstige/T ... _83-91.pdf

Greetings,
Olli

Olli W. hat geschrieben:Privet Smirnov,

there could be a few reasons for the hot start problem.

- single Temp. sensor near the hydraulic pump defective and/or broken wire
- fuel injectors leaking / residual pressure too high
- worn fuel pump relay
- fuel filter very old
- air/fuel mixture out of tune

The cold start valve (starting atomizer) could be activated, if the engine thinks, that its´cold. This will happen, when the single temp. sensor ist defective or not connected - Audi part number is 049 919 501.
There are two of them located near the coolant outlet/hydraulic pump at the cylinder head.

Do you know, how to activate the fault code readout?
If not, you may read www.sjmautotechnik.com for further information.
It´s one of the best websites for Audi 100 turbo - written in english though.

I have the russian Audi 100 manual for download on my website - here ist the link: http://www.audi100-online.de/sonstige/T ... _83-91.pdf

Greetings,
Olli

Thanks for the information! It is good links! But speed of my modem 36 Kbit/sec, therefore I cannot open http://www.audi100-online.de/sonstige/T ... _83-91.pdf

Smirnov,

no good with a 36k modem...

But you can buy the entire book at your local Dom Knigi.

I found these books at www.yandex.ru





(funny, this is a picture from my car, taken by myself back in 1999!)




Have a look at www.autodata.ru - seems like many books in russian language.

http://www.autodata.ru/goodsinfo.osg?id ... ype=1&c=li


Greetings,
Olli

Olli W. hat geschrieben:Smirnov,

no good with a 36k modem...

But you can buy the entire book at your local Dom Knigi.

I found these books at www.yandex.ru





(funny, this is a picture from my car, taken by myself back in 1999!)




Have a look at www.autodata.ru - seems like many books in russian language.

http://www.autodata.ru/goodsinfo.osg?id ... ype=1&c=li


Greetings,
Olli

Thanx, I have the second book already. I'll look for others.

Olli, do you not have the correct values for the temperature sensor in the MC? Then Smirnov could measure his sensor with a multi-meter. (Both with cold and with warm engine).

In the NF engine, the sensor is an NTC sensor, with about 6 k-Ohm at 0°C, about 2.5 k-Ohm at 20°C, and about 200 Ohm at 90°C.

Hi Folks,

here´s a quote from www.sjmautotechnik.com:

With the single wire removed, the resistance should be tested between the sensor terminal and the cylinder head (engine ground). The resistance should be approximately 80 ohms with the coolant temp around 212F, (100C), approximately 130 ohms with the coolant temp at 176 degrees F (80C), approximately 1000 ohms at 68F (20C), and approximately 6000 ohms at -4F (-20C).

Most common failure is that of a broken wire and/or coroded crimp connector. Sometimes, the sensor itself can fail, delivering too high resistance.
Failure is recorded by the on-bord diagnostic system.

Greetings,
Olli