DANdeMAN

I had a no start that was resolve by changing my FI relay. To know more, it start at post #28

In resumé : Now I have a rough idle when warm(after a few minute) with misses on fast acceleration.
When cold the "****" run's great even with hard accel - that should elliminate vacuum/wires and plug!?.

What I have done up to now :

- New coil
- Rebuilt alternator - it needed it.
- New battery
- New FI relay
- New wire and plug on the way - planed with plenum refresh this summer anyway.
- Tested knowned good green wire - no change.
- Tested resistor to coil - no change.
- Tested all sorts of voltage and ohms on a veriaty of parts - info in other thread.

That bring's us to my last trouble shooting :
I have unpluged the Temp II sensor and the car won't start at all.
The Ohms reading to gound on each of the connectors and with themselfs is nothing at all. I repluged it.
I have unpluged the Thermo Time switch, the Ohms to ground is 140, 70 and 74 contact to contact.
But the car runs way better with it unpluged. So for now it will stay unpluged, at least it is drivable.
I did that on the weekend and after a while it get rough a bit at idle....
Note : today it is cool here, so that is another variable to consider.

OK, my gut feeling is that the cold start valve is acting up and sending fuel as if cold???
Or Thermo Time switch is involed???
Before I buy another $300+ in goodies that I may not have to, I need your expertise....

Mrmerlin

run the car in the dark after it gets up to temp and check the plug wires ,

DANdeMAN

Thanks for the suggestion...You are among the posters that I do take seriously.
I would like to had that the car was running perfect before the relay went caput (while moving).
I don't see how wires would suddenly be affected by that.
But, I did play around with the distributor prior to changing the relay.
And, I'm getting a reading of 1.2kohms insted of 2.5kohms on the coil to dist. line.....
In any case, the wires/plugs will be changed as soon as the new ones arrives. That will clear that.


Now, today, I started the car cold from the night without reconnection the thermo time switch (TTS).
It took a few more cranks than with it connected and I went off for a long drive mostly out of the city.
It ran very good, as normal untill it got warm then at stops or lights (in gear) it started to idle rough and sputered on accel but after that at speed it ran fine.
In nutral the idle is OK.

Tonight I will be going to view a possible DDriver, this time in the city with many stop and go.
Will report back ..... For the love of GOD, pray for me in those dark times.

DANdeMAN

Ok, got back from the ride and same thing; rough idle at stops in gear ok in neutral.
Have to press gently to start rolling to minimise misses but after that it rolls pretty good.

Any suggestions other than to check the wires!?

zoltan944

have you pressure tested the intake for leaks? Swapped your AFM for a known good one?
If infact you feel there was some 'electrical problem' that was all the sudden, have you swapped your brain for a know good one?
Once you get passed alot of the common stuff and still have weird issues, it is really nice to have someone with a similar car close by to start checking components.
Plugs and wires will be a good start to eleiminate those off the bat, make sure to take a few pics of the plugs so we can see them, also make sure they were the right ones and not hotter ranges.
Other than that your this would usually bring up a Temp II issue, I beleive temp II on your year should be read across both of your terminals, if you are getting no reading you should have ordered that too

DANdeMAN

Zoltan, the Temp II & TTS are on there way to

Yeah, an AFM and Brain are not comon around here I'm afraid.
The AFM will be checked when I dismantel the plenum.
It will be a good time to clean and check both truttle switch as well as the aux. air valve and the CSV (cold start valve).
The brain will be the absolute last Item I will consider testing.

I was hopping to drive it a litle longer before I start the plenum RR.
But if there is no progress by Sunday, I will start the RR.
Yes I will take pics of relevent parts....

Thanks for posting Zoltan

zoltan944

From this post, I am quite sure you will have it handled when your shipment comes in. Just replace all of it and who cares which one was the actual culprit!
Remember to plug back in your AFM

DANdeMAN

Last week in a last effort to sort out the problem and enjoy what is left of the so call summer we are having, I removed the CSV(cold start valve) for some bench test and cleaning.
After removing the air boxe, I had acces the plugs & wires so I replaced them.
The plugs were all clean with a nice light grey "patina".
The wires all checked at about 3ohms (good/bad?)

On the bench, I placed the CSV in the vise with a contaner under it.
Connected 2 wires to my battery charger and set it at 2amps.
Did a dry test and I could ear the the valve open and close.
I had a small funnel that fited just right on the opening.
I poured a little ATF in it and applied power, took a few sec and it started to drip... on/off a few time to lubricate well.
Then poured some regular gas in it and repeted the prosses.

Friday after work, I reassemble the lot and also hadded a fuel pressure gauge from Roger...the pressure is perfect at 30psi(2bars).
Started the car and since then no more rough anything....

Thanks to all for your input.

Oooops almost forgot, took the AFM out and clean that and the thottle body opening (was dirty) and reinstaled.
Did not do any ajustment on the AFM....

oups59

Good job Daniel

DANdeMAN

Merci Luc....

I didn't take any pics, I felt it was unecessary at the time since everything was normal...

Here is one of the gauge...easy to instal.
I know, it's 28psi... 2bar=29psi close enough

Bertrand Daoust

Happy that everything turn out well.
It is often something quite simple that fix our complex - seem to be - problem.

DANdeMAN

Yeap, seem's to be...

Çà fait 3 fois que je passe chez toi pi té jamais là... à la prochaine