fuel issues on my stock 95 gt

[black 95 gt]

this is my first 95 mustang gt all other cars were 87-93 fox bodies and im stumped my car has a mis to it i have changed head gaskets, cam (msd), ignition control module ,mass air,harmonic balancer,fuel pump,fuel filter, and regulater and the mis is still there also temp goes to 230-250 changed sensor and put auto meter temp gauge i have not changed injectors yet every once in a while the voltage gauge drops from above half to just under half also please help its driving me crazy

 

[Mrstangerbanger]

this is my first 95 mustang gt all other cars were 87-93 fox bodies and im stumped my car has a mis to it i have changed head gaskets, cam (msd), ignition control module ,mass air,harmonic balancer,fuel pump,fuel filter, and regulater and the mis is still there also temp goes to 230-250 changed sensor and put auto meter temp gauge i have not changed injectors yet every once in a while the voltage gauge drops from above half to just under half also please help its driving me crazy

Sounds like you have more then one problem .. I would see if someone can hook up a diagnostic machine to the car like a snap on solus pro or something like that.. could be the CCRM having problems but could also be hundred more things the best thing to do is hook up a diagnostic machine to see what the computer is saying with KOEO ..

 

[black 95 gt]

I have put it on the scanner and codes are eca code and o2 sensors running lean/low voltage I have changed the ccrm and ecm

 

[CC'S95GT]

have you changed the coil to fix the miss?
Have you had the Alt tested?

 

[black 95 gt]

I have not changed the coil and alternator was tested they said it was good

 

[GT Rob]

+2 about the coil

 

[Bossman]

What has been stated above and...
On the alternator test... I just changed one in my Ranger I knew was giving me problems, but it was intermittent. The tester Vatozone used is only for a very very short window of time. Anyways I changed it, and the voltage dipping went away. I also changed my battery as well.
Check your grounds for corrosion and loose bolts.

 

[black 95 gt]

I will change the coil in the morning and the alternator on Friday (payday) thank you all for your advise I will post what happens Nd the progress

 

[Mrstangerbanger]

Check all your grounds also .. A code reader and a diagnostic machine are way different bro .. A D machine will tell you exactly what is wrong in seconds they cost 5,000 plus dollars and will tell you the data for every sensor in your car .. Find a snap on mt2500 or solus pro

 

[black 95 gt]

changed the coil still has a miss i will go and have the scanner done tomorrow will post the outcome thank you all

 

[black 95 gt]

Is there a way to disconnect the o2 sensors like the foxbodys and run without them

 

[RichV]

Unplug the harness right under the oil filter. It will run without O2s.

 

[CC'S95GT]

But it will run rich if the sensors are unplugged.
Also, have you cleaned the maf. often times the k/n filter will deposit oil on the maf, then the dirty maf will not send the right sign to the computer.

 

[black 95 gt]

Using stock filter box and filter brand new maf

 

[ttocs]

I find it interesting everyones recomendations when all we know about the problem is in the title and so vague.... its amazing what can happen here when there is a more comple list of what happened, what didn't happen or what you expect to happen rather then a list of parts exchanged.

 

[black 95 gt]

had it on a hand held snap on code reader and the code 212 came up loss of diagnostic monitor (idm) signal short to ground in spark output (spout) circuit. I DONT UNDERSTAND

 

[black 95 gt]

drove the mustang today after clearing the codes and letting it sit for two days and i let it warm up in the driveway temp got to about 200 (195) thermostat, drove it about 2miles temp starting rising (getting on the throttle here and there ) get on freeway another 2 or 3 miles temp was at 230 check engine light came on starting pinging at about 2200 rpms in 4th gear so i pulled over waited a few minutes and checked the codes codes 176/181/189/172/and 212 came up telling me its running lean I dont understand everything has been changed except fuel injectors , tps , and air bypass valve i can change the parts just dont know how to diagnose and i am not giving up lol any ideas AND THANK YOU ALL VERY MUCH FOR YOUR HELP

 

[CC'S95GT]

when I had those codes it was from a dirty MAF. If you already cleaned it then maybe there is some way to test the ohms of the filament.

Cooling- change your thermo to a 180* and flush your rad while your at it.

 

[black 95 gt]

I just put it back from a 180 and the fan on the key and I have a brand new stock radiator

 

[CC'S95GT]

Which way did you put the thermostat in? spring up or spring down? i have to ask.
When you burped the rad, did you see coolant flowing? is the fan kicking on?