"Randolph" <trash@junkmail.com> wrote in message news:41AAC9CF.C2757140@junkmail.com...
> Caleb wrote:
> > Thanks, it was the oil in the distributor that was causing the jumping
> > tacho, I replaced the distributor and the VAD and it is running great
> > now (apart from idle) I can do the timing and reset the ECU and check
> > for leaks, but how do i reset the idle? and wheres the idle mixuter?

> Odds are you don't have an idle-mixture adjustment, the PGM-FI system
> controls the mixture. There is an idle speed adjustment, but you need to
> know what you are doing before trying to adjust it.

Randalph is right, there is no idle mixture. I'd mistaken. I was
referring to the idle adjusting screw.

>Typically adjusting idle speed on a fuel injected
> engine entails disabling one or more vacuum hoses
> and bypass valves etc., and then adjust to a certain RPM.
> The factory manual from http://www.helminc.com will have
> instructions. Haynes or Chiltons probably do too.

Typical early Honda FI idle adjustment require disconnecting the
EACV electrical connector then set idle adjusting screw on throttle
body to 650-rpm +- 50 in neutral with no load. Shut off engine,
reconnect the 2-pin connector, reset ECU and restart engine again.
It should be at 750-rpm +- 50 with loads. Check Acura Helm
manual for accuracy.

Warning: Be sure no trapped air, fast idle, vac-leak, or
cold sensor causing high idle problems and that the VAD is not
from a junk yard and leaking.

> One word of warning: On the throttle body there is a throttle stop screw
> that looks and works like the idle adjustment screw on a carburetor. Do
> not touch it. This is NOT where the idle is adjusted. This screw is
> factory adjusted, and the service manual has big warnings about all hell
> breaking loose if you touch it.

Absolutely right.

 

Burt Squareman wrote:
> "Randolph" <trash@junkmail.com> wrote in message news:41AAC9CF.C2757140@junkmail.com...
>
>>Caleb wrote:
>>
>>>Thanks, it was the oil in the distributor that was causing the jumping
>>>tacho, I replaced the distributor and the VAD and it is running great
>>>now (apart from idle) I can do the timing and reset the ECU and check
>>>for leaks, but how do i reset the idle? and wheres the idle mixuter?
>
>
>>Odds are you don't have an idle-mixture adjustment, the PGM-FI system
>>controls the mixture. There is an idle speed adjustment, but you need to
>>know what you are doing before trying to adjust it.
>
>
> Randalph is right, there is no idle mixture. I'd mistaken. I was
> referring to the idle adjusting screw.
>
>
>>Typically adjusting idle speed on a fuel injected
>>engine entails disabling one or more vacuum hoses
>>and bypass valves etc., and then adjust to a certain RPM.
>>The factory manual from http://www.helminc.com will have
>>instructions. Haynes or Chiltons probably do too.
>
>
> Typical early Honda FI idle adjustment require disconnecting the
> EACV electrical connector then set idle adjusting screw on throttle
> body to 650-rpm +- 50 in neutral with no load. Shut off engine,
> reconnect the 2-pin connector, reset ECU and restart engine again.
> It should be at 750-rpm +- 50 with loads. Check Acura Helm
> manual for accuracy.
>
> Warning: Be sure no trapped air, fast idle, vac-leak, or
> cold sensor causing high idle problems and that the VAD is not
> from a junk yard and leaking.
>
>
>>One word of warning: On the throttle body there is a throttle stop screw
>>that looks and works like the idle adjustment screw on a carburetor. Do
>>not touch it. This is NOT where the idle is adjusted. This screw is
>>factory adjusted, and the service manual has big warnings about all hell
>>breaking loose if you touch it.
>
>
> Absolutely right.
>
>
>
>

Thanks for the advice, I will try that today, What happens if i have
adjusted the throttle stop screw? I put it back to where it was (well
pretty close anyway) as it didnt seem to do anything. And what is the
easiest way to replace the altenator?

 

Burt Squareman wrote:
> "Randolph" <trash@junkmail.com> wrote in message news:41AAC9CF.C2757140@junkmail.com...
>
>>Caleb wrote:
>>
>>>Thanks, it was the oil in the distributor that was causing the jumping
>>>tacho, I replaced the distributor and the VAD and it is running great
>>>now (apart from idle) I can do the timing and reset the ECU and check
>>>for leaks, but how do i reset the idle? and wheres the idle mixuter?
>
>
>>Odds are you don't have an idle-mixture adjustment, the PGM-FI system
>>controls the mixture. There is an idle speed adjustment, but you need to
>>know what you are doing before trying to adjust it.
>
>
> Randalph is right, there is no idle mixture. I'd mistaken. I was
> referring to the idle adjusting screw.
>
>
>>Typically adjusting idle speed on a fuel injected
>>engine entails disabling one or more vacuum hoses
>>and bypass valves etc., and then adjust to a certain RPM.
>>The factory manual from http://www.helminc.com will have
>>instructions. Haynes or Chiltons probably do too.
>
>
> Typical early Honda FI idle adjustment require disconnecting the
> EACV electrical connector then set idle adjusting screw on throttle
> body to 650-rpm +- 50 in neutral with no load. Shut off engine,
> reconnect the 2-pin connector, reset ECU and restart engine again.
> It should be at 750-rpm +- 50 with loads. Check Acura Helm
> manual for accuracy.
>
> Warning: Be sure no trapped air, fast idle, vac-leak, or
> cold sensor causing high idle problems and that the VAD is not
> from a junk yard and leaking.
>
>
>>One word of warning: On the throttle body there is a throttle stop screw
>>that looks and works like the idle adjustment screw on a carburetor. Do
>>not touch it. This is NOT where the idle is adjusted. This screw is
>>factory adjusted, and the service manual has big warnings about all hell
>>breaking loose if you touch it.
>
>
> Absolutely right.
>
>
>
>

Thanks for the advice, I will try that today, What happens if i have
adjusted the throttle stop screw? I put it back to where it was (well
pretty close anyway) as it didnt seem to do anything. And what is the
easiest way to replace the altenator?

 

Caleb wrote:

<snip>

> >>One word of warning: On the throttle body there is a throttle stop screw
> >>that looks and works like the idle adjustment screw on a carburetor. Do
> >>not touch it. This is NOT where the idle is adjusted. This screw is
> >>factory adjusted, and the service manual has big warnings about all hell
> >>breaking loose if you touch it.

> Thanks for the advice, I will try that today, What happens if i have
> adjusted the throttle stop screw? I put it back to where it was (well
> pretty close anyway) as it didnt seem to do anything.

The stop screw is there so that the throttle will rest against the screw
rather than rub against the inside wall of the throttle body. My Civic
service manual does not say how to recover if one should have moved the
screw, but the service manual for my brother's VW has a section on it.
It goes something like this:

1. Loosen the lock nut and unscrew the throttle stop screw until it no
longer touches the stop.

2. Stick a piece of paper between the screw and the stop and tighten the
screw until you can just barely move the paper back and forth.

3. Remove the paper and tighten the screw 1/2 turn and tighten the lock
nut.

 

Caleb wrote:

<snip>

> >>One word of warning: On the throttle body there is a throttle stop screw
> >>that looks and works like the idle adjustment screw on a carburetor. Do
> >>not touch it. This is NOT where the idle is adjusted. This screw is
> >>factory adjusted, and the service manual has big warnings about all hell
> >>breaking loose if you touch it.

> Thanks for the advice, I will try that today, What happens if i have
> adjusted the throttle stop screw? I put it back to where it was (well
> pretty close anyway) as it didnt seem to do anything.

The stop screw is there so that the throttle will rest against the screw
rather than rub against the inside wall of the throttle body. My Civic
service manual does not say how to recover if one should have moved the
screw, but the service manual for my brother's VW has a section on it.
It goes something like this:

1. Loosen the lock nut and unscrew the throttle stop screw until it no
longer touches the stop.

2. Stick a piece of paper between the screw and the stop and tighten the
screw until you can just barely move the paper back and forth.

3. Remove the paper and tighten the screw 1/2 turn and tighten the lock
nut.