Nedavno Steve Sears pise:

| The temperature:rpm correlation should be about right, as the LPG will
| turn to a more diffuse gas with greater heating, and you are using the
| engine coolant to heat the LPG, right?

I think that engine coolant is used only to keep vaporizer from freezing
and it perhaps heets lpg spmewhat, but I think that does not make any
difference.

| It sounds like the ISV is indeed working, but the feedback from it
| being designed for a different purpose than LPG sounds like it may be
| causing the problem (by working properly!) - I suggest that you may
| have to rig in a way to disable the ISV when you are running LPG, as
| the engine runs properly when you're running on gasoline, correct?

No. It is the same, gasoline or lpg, I did some more testing. Perhaps a
problem is not so big on gasoline as it is on lpg, but it is there.

| Thus, when the LPG turns on(engine at required temperature), then you
| would have to take the ground connection away from the ISV. I expect
| that there may be a relay doing that already - to shut off the fuel
| pump.

I can install a switch to disconnect ISV, but as I just wrote I have the
same problem with gasoline too.

| BTW, the Audiworld type 44 (aka type $$) forum, which covers
| 100/200/5000/V8(and, apparently 500 in South Africa and other places)
| - appears as: http://forums.audiworld.com/v8/
| - it's not just V8's covered in there

I will check thaere, thanks.

| And the "Haynes" manual?.......ugggh! When you read "Assembly is the
| reverse of removal" you'll realize why the Bentley Manual is worth the
| extra$ for those who actually do work on their car.

It seems like I will have to get the Bentley Manual, I just received
Haynes manual for '77 Puch Maxi that I own, and I am completely
disappointed. It looks like "complete idiots guide" to disassemble and
assemble moped's engine. I did that without the manual.



--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** http://counter.li.org/ **
/__/\____/--\__\ ** Reply at: iimperl - at - ml1 - dot - net **

 

Nedavno Steve Sears pise:

| The temperature:rpm correlation should be about right, as the LPG will
| turn to a more diffuse gas with greater heating, and you are using the
| engine coolant to heat the LPG, right?

I think that engine coolant is used only to keep vaporizer from freezing
and it perhaps heets lpg spmewhat, but I think that does not make any
difference.

| It sounds like the ISV is indeed working, but the feedback from it
| being designed for a different purpose than LPG sounds like it may be
| causing the problem (by working properly!) - I suggest that you may
| have to rig in a way to disable the ISV when you are running LPG, as
| the engine runs properly when you're running on gasoline, correct?

No. It is the same, gasoline or lpg, I did some more testing. Perhaps a
problem is not so big on gasoline as it is on lpg, but it is there.

| Thus, when the LPG turns on(engine at required temperature), then you
| would have to take the ground connection away from the ISV. I expect
| that there may be a relay doing that already - to shut off the fuel
| pump.

I can install a switch to disconnect ISV, but as I just wrote I have the
same problem with gasoline too.

| BTW, the Audiworld type 44 (aka type $$) forum, which covers
| 100/200/5000/V8(and, apparently 500 in South Africa and other places)
| - appears as: http://forums.audiworld.com/v8/
| - it's not just V8's covered in there

I will check thaere, thanks.

| And the "Haynes" manual?.......ugggh! When you read "Assembly is the
| reverse of removal" you'll realize why the Bentley Manual is worth the
| extra$ for those who actually do work on their car.

It seems like I will have to get the Bentley Manual, I just received
Haynes manual for '77 Puch Maxi that I own, and I am completely
disappointed. It looks like "complete idiots guide" to disassemble and
assemble moped's engine. I did that without the manual.



--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** http://counter.li.org/ **
/__/\____/--\__\ ** Reply at: iimperl - at - ml1 - dot - net **

 

Nedavno Randolph pise:

| > | Also, What car is this?
| >
| > 1989 Audi 100 2.3E (NF 5-Cyl. engine).
|
| I have an '87 VW Golf GTi with CIS-e (= KE-Jetronic) fuel injection. I
| too had a problem with idle speed earlier this year. I first suspected
| the ISV and replaced it (the replacement cost me $4, so replacing it
| was cheap troubleshooting).

ISV for my car is $220 (BOSCH 0 280 140 512) Audi part 034 133 455B is
probably more $$.

| No change. I then found out the the idle
| position switch (the switch that closes when you release the gas
| pedal) was broken.

One on my car works OK. I checked.

| I don't know what type of fuel injection you have on your car, but I
| believe you said you do not have an oxygen sensor.

I have O2 sensor.


--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** http://counter.li.org/ **
/__/\____/--\__\ ** Reply at: iimperl - at - ml1 - dot - net **

 

Nedavno Randolph pise:

| > | Also, What car is this?
| >
| > 1989 Audi 100 2.3E (NF 5-Cyl. engine).
|
| I have an '87 VW Golf GTi with CIS-e (= KE-Jetronic) fuel injection. I
| too had a problem with idle speed earlier this year. I first suspected
| the ISV and replaced it (the replacement cost me $4, so replacing it
| was cheap troubleshooting).

ISV for my car is $220 (BOSCH 0 280 140 512) Audi part 034 133 455B is
probably more $$.

| No change. I then found out the the idle
| position switch (the switch that closes when you release the gas
| pedal) was broken.

One on my car works OK. I checked.

| I don't know what type of fuel injection you have on your car, but I
| believe you said you do not have an oxygen sensor.

I have O2 sensor.


--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** http://counter.li.org/ **
/__/\____/--\__\ ** Reply at: iimperl - at - ml1 - dot - net **

 

Nedavno Randolph pise:

| > | Also, What car is this?
| >
| > 1989 Audi 100 2.3E (NF 5-Cyl. engine).
|
| I have an '87 VW Golf GTi with CIS-e (= KE-Jetronic) fuel injection. I
| too had a problem with idle speed earlier this year. I first suspected
| the ISV and replaced it (the replacement cost me $4, so replacing it
| was cheap troubleshooting).

ISV for my car is $220 (BOSCH 0 280 140 512) Audi part 034 133 455B is
probably more $$.

| No change. I then found out the the idle
| position switch (the switch that closes when you release the gas
| pedal) was broken.

One on my car works OK. I checked.

| I don't know what type of fuel injection you have on your car, but I
| believe you said you do not have an oxygen sensor.

I have O2 sensor.


--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** http://counter.li.org/ **
/__/\____/--\__\ ** Reply at: iimperl - at - ml1 - dot - net **

 

Yvan wrote:
> Nedavno Tony pise:
>
> I have problem that I briefly described in my previous post. When I
> stop the car rpm drops to some 500-600 and then sometimes stalls, and
> sometimes goes up to 900-1000 and then back to standard 750.
>
> | Also, What car is this?
>
> 1989 Audi 100 2.3E (NF 5-Cyl. engine).
>
> | If a T44, you might want to see numerous threads on this at Audiworld:
> | http://forums.audiworld.com/v8/
>
> It is not V8.

The forum link that I gave is for all Type 44s ('82 to '91) and most of the
discussion is for the five cylinder engines.

> | The ISV is operated with the ISV controller (in T44s it is in drivers
> | side under dash in Aux relay panel).
> |
> | One input that it uses is a temp sender (on T44, I5 it is under the
> | upper radiotor hose)
>
> I found some instructions here:
>
> http://www.sjmautotechnik.com/troubl...r.html#mixture

Very good source for information. SMJ site is nearly the 'bible' for T44 series.

> but it seems it is not for my NF 5-Cyl. engine. But I am going to test
> it like this anyway.
>
That would be a good start.

Good luck.

Tony
'91 100q 5spd
ISV BTDT

 

Yvan wrote:
> Nedavno Tony pise:
>
> I have problem that I briefly described in my previous post. When I
> stop the car rpm drops to some 500-600 and then sometimes stalls, and
> sometimes goes up to 900-1000 and then back to standard 750.
>
> | Also, What car is this?
>
> 1989 Audi 100 2.3E (NF 5-Cyl. engine).
>
> | If a T44, you might want to see numerous threads on this at Audiworld:
> | http://forums.audiworld.com/v8/
>
> It is not V8.

The forum link that I gave is for all Type 44s ('82 to '91) and most of the
discussion is for the five cylinder engines.

> | The ISV is operated with the ISV controller (in T44s it is in drivers
> | side under dash in Aux relay panel).
> |
> | One input that it uses is a temp sender (on T44, I5 it is under the
> | upper radiotor hose)
>
> I found some instructions here:
>
> http://www.sjmautotechnik.com/troubl...r.html#mixture

Very good source for information. SMJ site is nearly the 'bible' for T44 series.

> but it seems it is not for my NF 5-Cyl. engine. But I am going to test
> it like this anyway.
>
That would be a good start.

Good luck.

Tony
'91 100q 5spd
ISV BTDT

 

Yvan wrote:
> Nedavno Tony pise:
>
> I have problem that I briefly described in my previous post. When I
> stop the car rpm drops to some 500-600 and then sometimes stalls, and
> sometimes goes up to 900-1000 and then back to standard 750.
>
> | Also, What car is this?
>
> 1989 Audi 100 2.3E (NF 5-Cyl. engine).
>
> | If a T44, you might want to see numerous threads on this at Audiworld:
> | http://forums.audiworld.com/v8/
>
> It is not V8.

The forum link that I gave is for all Type 44s ('82 to '91) and most of the
discussion is for the five cylinder engines.

> | The ISV is operated with the ISV controller (in T44s it is in drivers
> | side under dash in Aux relay panel).
> |
> | One input that it uses is a temp sender (on T44, I5 it is under the
> | upper radiotor hose)
>
> I found some instructions here:
>
> http://www.sjmautotechnik.com/troubl...r.html#mixture

Very good source for information. SMJ site is nearly the 'bible' for T44 series.

> but it seems it is not for my NF 5-Cyl. engine. But I am going to test
> it like this anyway.
>
That would be a good start.

Good luck.

Tony
'91 100q 5spd
ISV BTDT

 

Oh, that's right and the thought is that on LPG the ISV might be functioning
just opposite from gas due to the location of the LPG infection.

Tony

Steve Sears wrote:

> Tony,
> Yvan has a Type $$, but he's running an LPG convertion on his car. You'd
> have to look at the a.a.a archives to see the troubleshooting that went on a
> couple of months ago.

 

Oh, that's right and the thought is that on LPG the ISV might be functioning
just opposite from gas due to the location of the LPG infection.

Tony

Steve Sears wrote:

> Tony,
> Yvan has a Type $$, but he's running an LPG convertion on his car. You'd
> have to look at the a.a.a archives to see the troubleshooting that went on a
> couple of months ago.