How I Can Figure Out If Distributor Is Going Bad?

Slow5.0 · Apr 12, 2004

Yesterday I get in trouble with my Stang , I taught my fuel pump going bad because I pulled CEL code 543 but thats bad code , it's gone now , I thing something is wrong with ignition , I chack almost evetything
spark plugs, spark plug wires, ingition module , distributor cap, rotor , fuel pump works fine , I have spare ECU computer and CCRM so I try swap them but nothing , I have no idea whats wrong but car run like **** and too frickin rich , spark plugs are wet , I find little bit fuel on them, meybe distributor or distributor gear is bad but when I start engine ,whole engine is shaking ,than sometime stop shaking than again shake again it's like in one hour engine run 25% good and 75% bad

How I can find if is Distributor or Distributor gear is bad

Slow5.0 · Apr 12, 2004

95GTeee · Apr 12, 2004

Check your timing and make sure your air filter is clean. Maybe you got some bad gas too?? Have you replaced the fuel filter lately?? My guess is a timing problem.

Slow5.0 · Apr 12, 2004

That night when I come back from the track I fill up full tank of gas
I have CAI and filter is in the fender , I didn't check that yet
Fuel filter I replaced 2 months ago
If timing is bad than distributer gear is f*** up , I hope so not or meybe yes because than I will find whats problem

swingline · Apr 12, 2004

Are your wires in the right order? Maybe your MSD unit or coil is bad?

Slow5.0 · Apr 12, 2004

wires is in the right order
MSD box is good , I tryed without MSX same thing
I tryed change coil too because I have spare coil , same thing

mo_dingo · Apr 13, 2004

When my distributor went bad in my Chevy truck, it shook violently, even at idle. If that is the case in yours, I would get a whole new dist.

Are all of the spark plugs running rich?

If all 8 are running rich, check the following.

#1 Fuel Pressure - If the FPR is bad, you may be getting too much fuel.
#2 Vacuum Check - Check the vacuum at idle. It should stay very steady.
#3 Check MAF - If the MAF element is clogged, it may cause the computer to add too much fuel.

#4 Disconnect the battery for a few minutes. Then drive the car for 20 minutes. Then run the codes again. Hopefully you should get some sort of codes. The O2 sensors should at least say you are running rich.

Post back when you perform the tasks outlined so we can go from there.

Good luck Ernie!
Scott

Slow5.0 · Apr 13, 2004

Fuel pressure regulator is good, FP is 39 psi like always
There is no Vacum leak , idle is 900rpms like always
Now I gonna check air filter, fuel filter, MAF, ECT, IAC
I disconected battery many times does't works that way
Engine just loopin like missed fire non stop, on aif/fuel ratio gauge I read right O2 sensor normal BUT on left O@ , this one is kinda weird , works wirh many lights, meybe one O@ sensor on left is bad ,
But I can understand why when I rev up a few times problems is gonne for a few min than come back , and it's worst on lower rpms 1700 and down

Slow5.0 · Apr 13, 2004

This morning I check ECT , IAC , MAF , air filter, all plugs and witers, rotor and distributer cap , ingition coil and module , everything is fine , now I have to check timing, dirstibuter gear and fuel filter
I was thinkin , night before I fing this problem I fill up full tank of gas , what I have some wather in the gas , metbe that cause my problem

DCOBRA97 · Apr 15, 2004

Long tubes

I noticed that you have the long tube headers......how long have they been on the car? and did you lengthen the connections your self or did you buy the longer connections.......and last but not least I would suggest tracing your o2 sensor wiring harnesses and ensure that they havent burnt through anywhere........last but not least hit one of the local auot stores and get the .99 cent gas treatment.
Good Luck!

Slow5.0 · Apr 16, 2004

Itoday I do compression test and all cilynders have good psi , so next is check again injectors

Zero Signal · Apr 16, 2004

If you suspect the distributor, your best bet would be to take it out and turn by hand. I knew my old one was bad when I tried to turn it by hand and it would bind like crazy. SO I ordered a REAL distributor to take it's place

Noobz347 · Apr 5, 2017

RobertSherwood said:
Does any one have the ohm # for the 3 prongs in the distributor? A ground B power C pip signal. A-B= ? B-C= ? A-C=? I need to check the hall effect. Mine cuts out at 4500 in first gear only.

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How I Can Figure Out If Distributor Is Going Bad?

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swingline

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