Bad Ground????

OK Matt here is the link to the aldl info. You will find the link to Aldlview down a ways. Lots of reading but lots of good info.
Take your time and read through it and digest what is explained. Might be a lot more than you want to know but knowledge is a good thing.

https://www.fiero.nl/forum/Forum2/HTML/069590.html

Try the config setting I indicated and take another log. Then we'll see what it looks like.

DR

Just so other know what's up. Matt's log file looked to be for a different ecm and contained fields for sensors and don't exist on the v6 ecm. Just need to bring him up to speed on Winaldl and aldlview.

[This message has been edited by Dodgerunner (edited 05-05-2006).]

just a note, if unsure of the exact ecm, pull the center console, it should be on the label on the ecm. There were a few years where there could be 2 differrent types for the same motor, IIRC.

Another note, look in your drop down while you have winaldl hooked up--to make sure you have chosen the correct computor --that # should match the # on your ecm.

Ok everyone I have a new problem may or may not be related. A couple days ago my cars ignition is acting up. It will just plain out die while driving. I am sure this is igntion related because I smell gas when the car turns over. Ignition module and coil are both good. Wires to coil are good as far as i know. Sometimes it will start if i mess with the wires, other times when i replaced ignition modules it worked. But anyways i took it to the shop today because i finally could not get it to restart after tinkering and they could not replicate the problem because they did not take it for a drive and it started up fine at the shop. It will run once you get it started in park with no problems, it just happens while driving no bucking or anything just plain stops. Any ideas????

Did you happen to read the post about grabbing the dis. and kind of jerking it around and it would clear up the problem. He thought that is was due to the plate the module attaches to is pressed onto the shaft housing. He believed that there might be a grounding problem between the plate and tube. When he touched a ground wire to the dist. cap screws it would run better.

Reason I bring it up is it sounds like you have an intermittent connecton problem with your ignition. How are the spade connectors that plug to the module?

Just like this post
https://www.fiero.nl/forum/Forum2/HTML/073435.html

[This message has been edited by Dodgerunner (edited 05-15-2006).]

Are you coding anything other than 12 ? did you put heat sink compound on the modual, is there spark getting to the coil, does it re-start* right away* after its stops running?

OK well it turned out to be something with the pickup coil and they recommended a whole new dist, i did that with new tps and O2. It still stalls at startup. Also they found during diagonoses with the smoke machine, the middle of my egr tube is leaking . I have like 47 psi fuel pressure. So my guesses were the tube or injectors still. She is running better. I just installed the idle pully from rodney, nice not hearing the belt sqeual. Anymore ideas of what causes a stall at startup? also dont know if it is related but sometime just cruising it does seem to buck a little bit......

If it stalls right when you put it in gear ---check or unplug your tcc. If it quits stalling you located one of the problems. Can`t remember if you installed a new iac, tps ?

yes both are new ill check the tcc

Ok well as an update, i replaced the TCC and it did not correct the stalling or stumbling. Next i replaced the fuel injectors with rebuilt ones and a braided egr tube. And finally the stumbling went away. It will still stall 1-2 times at startup, then the next time it will run like nothing is wrong. At stop lights it will randomly kind of stutter or miss and im not sure what is causting it. My original egr tube was not damaged so i suspect the fuel injectors were the fix. The problem with the new injectors is that i think they came from an 86 but they are not as long and have a different nozzle than the originals i took out. The seals on the new ones are in the holes and they dont leak and it doesnt stumble anymore so im not going to worry about it. So basically does anyone have any ideas on what would cause stalling from a cold start or the sort of miss stopped in drive. Additionally the car will buck around 40 or so but im going to guess from previos posts that that is a common problem.

Matt,Can you still run aldl logs? Ok heres a list of possibility`s, some have been covered, I still think it could be the stop idle screw, but lets move on, also the car should not buck at 40mph.
1. idle speed incorect
2. fuel filter clogged or impurities in the gas
3. distributor components damaged
4. faulty emmisions system components
5. faulty or in correctly gapped plugs
6. faulty or leaky plug wires
7. vac leak, in fuel injection system, intake manifold, vacum hoses
8. in correct timimg
9. low or un-even cylinder compression
10. broken or cracked ignition wires & or sensor connectors
1.1.1.1.1.... Wer`e going to have to pin this with aldl logs --I have a feeling... Intermediate electrical is a **** to nail down.
I can`t help it ,I still think its the stop idle screw, making the ecm work like hell to compensate. As mentioned I went threw a year of fooling with that thing, before getting another t.b. with cap & iac to correct mine. Ohh your injectors are ok --they are just a different style.. PM dodgerunner --see if we can start reading logs on this...

OK i will take a log tomorrow. to eliminate some possibilities, 2) I have replaced the fuel filter recently with the fuel pump, my gas tank was really clean, had no impurities in it. unless something is clogged in the lines but when it was in the shop it had 47 psi.3) Have a rebuilt distributor.4) New egr valve,solenoid,tube.5) new plugs properly gapped maybe 4 months ago, i could check though. 6) New autolite wires 8 months ago or so maybe longer, dont remember, i could try a replacement, i do have a set of the make your own accel wires laying around. 7)Any crack in my vac lines has rubber tube around it, and my car will stall when you do the finger over the hole test. 8)Timing is correct with new distributor. 10) At the shop a diagonoses was preformed checking most sensors and ive replaced most of them so i dont suspect it is a sensor problem.

That leaves 1) incorrect idle speed, 9)Still need to check compression,

From the list of things i elminated, what should i double check?

Without going back and rereading all the post. Have you again tried disconnecting the EGR valve to see what affect it had on the stalling.

Also when you replace the injectors. Did you take a close look at the short rubber hose that connects from the port by the cold start injector to the pipe going to the TB. Was it in good shape and no cracks.

Hmm i dont recall seeing the pipe youre talking about. Is it visible without removing anything?

quote Originally posted by matt_p182: Hmm i dont recall seeing the pipe youre talking about. Is it visible without removing anything?

I think dodgerunner is talking about the black tube that comes out of the back/side/under your t.b., then runs over to the little rubber tube that sticks up from your intake --it has no clamps on it, its just pushed back into the t.b. then has too be man handled into that little tube on intake----also I caught this twice in your post---how are you repairing those black plastic vac lines---you mentioned **any cracks in vac lines have rubber tube around them** that won`t work 100% been there, you really need Rodneys aluminum, I had a crack on a set of lines, put the same thing you did around it, it was ok for a little while, still looked good , until I took off the top plentum, it had a conceled 4 inch slit running up the side of the line, which was causing all kinda problems, unless vac lines are known to be 100% intach before install , I would order Rodneys kit, mine stalled also when plugging iac hole, thats what threw me off for so long....

i suppose i should look into rodneys kit, but i think my vacuum lines are ok. About the tube you are talking about, i do remember it was in the t.b. securely, but i dont think i looked where it went to, so i dont know about the other end.

quote Originally posted by matt_p182: Hmm i dont recall seeing the pipe youre talking about. Is it visible without removing anything?

Here is a link where we where discussing it. With pics.

It 's down behind the distributor.

https://www.fiero.nl/forum/Forum2/HTML/075153.html

[This message has been edited by Dodgerunner (edited 07-17-2006).]

I wonder if he ever got this fixed?

dunno...follow-ups are always good. lets people see what advice is actually working.
this guy had a nice collection of problems - not one single thing would have fixed him up....

thanks to all of you this just solved my problem with my new stock-ish 85 2.8gt motor that had some issues

?- are there cold start injectors on these engines? just a ? I aint sure

yes, there is. its on the back of the intake manifold. its near the distibuter. you'll see a small metal fuel line running to it from the fuel rail.

See that silver/aluminum tube to the right of the screen with a nut on it, right next to the black mushroom looking thing (fuel pressure regulator) follow it down under the distributor and you`ll run right into it.... Pic courtesy of jazzman
http://www.fierocentral.com/images/Formula/misc/PIC00088.JPG