Just to make sure.

[ozzy smith]

It tested good can it be a bad ground . What are the grounding points the whole car tho

 

[LOUDSHO92]

Get a voltmeter and check the battery. Running you should see 14 volts and not running around 12 volts. If the alternator is bad it could cause your problems.

You might want to check the battery cables and terminals. Old wires or corroded terminals can cause similar issues.

 

[rubydist]

The main ground is the large black wire from the block next to the starter up to the battery. There is at least one smaller black wire that runs from the firewall to the battery negative as well. The engine needs to be grounded to the chassis and the intake needs to be grounded to the block.

The alternator is grounded back to the harness by one of the wires in the alternator connector, that runs to the chassis.

Does it have this "runs poorly and alternator light flickers" issue all the time, or does it come and go? I wonder if the voltage regulator works some of the time (like when its getting tested) and not all of the time (like once it warms up)?

 

[ozzy smith]

The car runs poorly as soon as it's on light flickers at all rpm I check the voltage again it was 13.84 so I hook it up too my girls car with the jumper cables and they didn't go up.ima check all the wire . I recently changed my oil too like always it gets messy on the starter

 

[luigisho]

That's a little too low with the alt running. I would look at the battery,alt, and starter and the easy to see wiring between them. First place I would concentrate on is the alt and the battery. Those two end up damaging each other over time when they are not working at full capacity. Reman units you get from the auto parts store can be tricky. Sometimes they are junk out of the box and sometimes they start to have issues early after install. Especially alternators (and starters). All 3 are usually recycled, rebuilt and resold units.

 

[ozzy smith]

The weird thing was that today when I decided to drive it again I check the voltage and it was 14.3 and battery light was not flicking . But I still have the misfire hesitate with no check engine light

 

[rubydist]

are there any codes now?

 

[ozzy smith]

Nope! I drove it on highway nothing comes up.

 

[rubydist]

based on my experience, in your situation I would change the DIS for the misfire. but its just a guess since you have no codes...

 

[ozzy smith]

Also I have a bad motor mount have so!e discoloration on the intake does that affect anything? Another Sho member says a bad motor mount affect them ?

 

[LOUDSHO92]

In extreme cases when the front mount is really broken and you let it go for a long time it can slam the DIS into the hood.

 

[ozzy smith]

Is their any way to test it?

 

[luigisho]

Also I have a bad motor mount have so!e discoloration on the intake does that affect anything? Another Sho member says a bad motor mount affect them ?

It does not directly affect anything. It is a clue. It indicates that the engine is moving more than it should and that --may-- affect wiring or the DIS module as there is not always enough slack to accommodate all the extra movement. It does not mean it is a direct cause and effect for motor mount and misfire. It means that it is a clue to consider and test the hypothesis. This has been an issue for plenty of people to make it a good area to consider when the more obvious stuff does not solve the issue

 

[ozzy smith]

So what do you recommend that I do ?

 

[luigisho]

I'm lost here. Your voltage readings seem a little off and then they are ok. Does the thing consistently have a miss or does it come and go? Have you replaced the DIS module with a known working one? Did you replace the knock sensor? Isn't that located in the block valley and require intake removal to replace? Did everything go back on correctly? Vacuum leak? Pinched hose? Replaced electrical components? Tested battery and alt? Checked computer for faults? Electrical issues and electronics or wiring problems can have you chasing your hind parts. alot of stuff to cross off the list...

You should probably condense everything in a single post that is easy to read and lists what was done when and why. There may be an issue of something presumed fixed that may have not turned out 100% either by human error or faulty part. You have a bunch of threads and posts and I can't get my head around all the stuff separately. You close to someone who's good at SHO stuff?

 

[ozzy smith]

I think the voltage Had to do with oil on the starter clean that up.the misfire is a constant thing as soon as the car is on.yes I replaced the knock sensor with a new one . Work great for 3 days then came on again only over 70 .also replaced the cam chain tensioner since it has a slap on the valve cover.by the way still has a small notice slap.evrything was working good tho other then the knock sensor still coming on.I been feeling the motor mounts bad for a while. I did test the battery and alternator also starter they were all good pass.i have not replace the dis module since here in el Paso TX this car are rare.no cell code only one has been 111 system fine. Also I replace the hose that goes from the block to interview the throttle antifreeze hose since it was leaking. Other then that I just have the constant misfire at all rpm. . And no their no people that know about the car they get scared as soon as they see the intake. The dis gave me problem when I first got the car one day it had no spark but it just fix itself. That was when I first got the car a year ago.

 

[luigisho]

Nothing just fixes itself. Do you have another car you can swap from? Have you tried wiggling wires to see if it changes the ignition miss? I would check for vacuum leaks, wiggle wiring and look for cheap used replacement parts

 

[rubydist]

I think that either you have an alternator with a voltage regulator that sometimes works fine and sometimes does not (and works fine when the alternator is tested) or else you have an intermittent ground issue to the intake manifold. You also could easily have a damaged DIS due to the motor mount problem.

 

[ozzy smith]

Tried I even had them connected across with a zip tie. And like I said it's hard to get part for it .o Reilly and AutoZone don't carry them everything I s special ordered. I'ma buy a dis module from sho source . Since it's fifty bill but thanks guy I really do appreciate your guys is help.the alternator seem to be working fine after I cleaned the starter filled with oil

 

[luigisho]

Look for used parts in the classified section and look for Dan Barbush (SV&HODan screen name on this forum) he sells used parts at very reasonable prices, ships quickly and is easy to deal with. Can't recommend anyone higher than him.