2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

UIM Ground * pic *

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Old Jul 30, 2006 | 09:46 PM
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Archangels's Avatar
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Question UIM Ground * pic *



Did i get the UIM Ground done properly?, and in the right place?...

I couldnt reach it unless i took the throttle body and UIM out, so i'm assuming yes....

I made a grounding strap from that bolt to the strut-tower, the car starts fine and drives alright, but with all of my other grounds it still has a slight hesitation at 4200rpm....

And there was nothing else i could have grounded that had a clip on it, this one did have a ring connector, and this was the best pic i took....

Any Input?...
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Old Jul 31, 2006 | 03:12 AM
  #2  
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Originally Posted by Archangels
Did i get the UIM Ground done properly?
"Doing it properly" simply requires unbolting it, cleaning up the ring terminal, bolt and contact surface, and putting it all back together. You then repeat the process for the main ground strap contact points at the battery, chassis and engine.

You seem obsessed with all these extra wires, while completely ignoring the stock ground points, which worked fine when they were new and clean.

With all these added wires not making any difference I would've thought you'd be looking at other possible causes of your problem. Why are you so convinced all these extra grounds will help? I suggested ignition a while ago. What condition are your plugs and leads in?
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Old Jul 31, 2006 | 09:07 AM
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Slight hesitation at 4200 sounds like you may need to clean the secondaries. Also, if the secondaries are not getting proper signal as to when to come on, you will definately get a sag as the primaries are not able to completely keep up with fuel demand.
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Old Jul 31, 2006 | 09:40 AM
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dude, thats a wicked grounding maze!! Reminds me of hedge maze but with 4 gauge wire......

Although extra grounds....supposedly....can't really hurt anything - you're kinda going over board on this.

But *technically speaking* if they're soldered and th connections are clean then those grounds are "done properly" meaning you've connected them tightly and current should flow through them well.

But you should be (as mentioned) checking out other moe pertinent items that may be related to the problem:

Injectors
Injector clips
Ignition
Plugs/wires

once all of the simple causes are ruled out, move down the line...just grounding the crap out of it won't get you much further....
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Old Jul 31, 2006 | 09:58 AM
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i have grounded everything possible that i could and it has helped immencely!...

i have cleaned and re-grounded all of the stock grounds that i could find and were informed of....

i guess the only thing i have left to do would be the clips, but was i right in the sence that what is circled in white is the "Harness Ground"...?

if anything could someone inform me of where ALL of the stock "ground points" are?...

the secondaries are brand new almost a year ago, same with the plugs, the clips were installed with the secondaries but i think the guy may have used old clips....

Last edited by Archangels; Jul 31, 2006 at 10:05 AM.
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Old Jul 31, 2006 | 11:21 AM
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*******if anything could someone inform me of where ALL of the stock "ground points" are?...
*********************************************8

You've come to the right forum for an answer. All the stock grounds are shown in the wiring diagram section of the series four fsm. I mean, there is a PAGE that shows where each and every gnd point is located.
Attached Thumbnails UIM Ground   * pic *-groundingone.jpg   UIM Ground   * pic *-groundingtwo.jpg   UIM Ground   * pic *-groundingsix.jpg   UIM Ground   * pic *-groundingthree.jpg   UIM Ground   * pic *-groundingfive.jpg  


Last edited by HAILERS; Jul 31, 2006 at 11:36 AM.
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Old Jul 31, 2006 | 03:24 PM
  #7  
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Originally Posted by Archangels
if anything could someone inform me of where ALL of the stock "ground points" are?...
Sure. The Factory Service Manual is available in the FAQ.....

Within 30 days, I will be posting a grounding writeup to my website. It will cover grounding in a complete and proper way....So if you can wait....
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Old Jul 31, 2006 | 07:44 PM
  #8  
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i cant wait Aaron!...

thank you hailers!...

after i grounded what i grounded it seams my car when i start it idles low till i blip the gas, and today it flooded like crazy, is it probably because after a year i'm enjoying my car?, or did i do something wrong?...

you guys ******* rule!...


one more thing, i still have a little blip in power at the 4200rpm range, and feel a sudden jolt when my secondaries come on, is it ok to enjoy my car or should i rectify the problems before i do so?...
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