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Topic: Confusing Rough Idle.... (Read 1384 times) previous topic - next topic

Confusing Rough Idle....

Ok, I know what the automatic response to this question will be:

"Change the timing"...

But folks, I shouldn't have to do that.

When I got my 87 t-bird v6, It ran just fine. No major vibrations, and everything seemed peachy.

Of course, then came my several breakdowns which resulted in my changing out the T.F.I. module, changing out all 6 plugs, and for the heck of it, I even threw in an Oil change as well.

However, will all of that done, the car just runs really rough at idle. I have no idea why either. As I said, when I purchased this automobile 3 months ago, it did not have that problem. Ever since those breakdowns however, I just can't get it to run like it used to.

When I changed out the TFI chip, I solved the breakdown problem. I temporarily solved the roughness when I changed out the plugs, but now it is back again. I have no idea why it's doing this. Any Ideas?
<---One must always remember to Remain cool, calm and collected when dealing with your fellow man, especially on the Internet....
-DMC24guy
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Confusing Rough Idle....

Reply #1 –
Pull the plugs and see if any are fouled. Also, did you change the wires and cap/rotor when you changed the plugs?
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Confusing Rough Idle....

Reply #2 –
I changed the plugs about 2 weeks ago. The other 3 about a month earlier. Once I changed the Passenger side plugs about 2 weeks ago, I thought the problem was gone. And Temporarily it was. The car ran just like it did when I bought it. However, about 1 week ago it started running real rough again. No, I didn't change the wires or the car/rotor.
<---One must always remember to Remain cool, calm and collected when dealing with your fellow man, especially on the Internet....
-DMC24guy
[/SIZE]

Confusing Rough Idle....

Reply #3 –
Have you pulled any codes.  That should be your first step.

Confusing Rough Idle....

Reply #4 –
Well, I just changed the Rotor and Cap, but the vibration is still there when idleing. What's worse is that I can't seem to figure out how to adjust the timing with all of that Throttle body . Any suggestions?
<---One must always remember to Remain cool, calm and collected when dealing with your fellow man, especially on the Internet....
-DMC24guy
[/SIZE]

Confusing Rough Idle....

Reply #5 –
Go have the codes pulled quit throwing parts at it.

Confusing Rough Idle....

Reply #6 –
Codes:

31,
94,
44.

Those came up during the check.
<---One must always remember to Remain cool, calm and collected when dealing with your fellow man, especially on the Internet....
-DMC24guy
[/SIZE]

Confusing Rough Idle....

Reply #7 –
Timing ain't gonna make a engine idle rough(at least not intermintantly), check the vaccum lines for cracks etc.

31 is EGR, which may be your rough idle if the valve is sticking... May be able to pull the valve and clean it... The 94 & 44 are air management problems with the TAB and TAD solenoids. These codes are often vaccum line related.
 

Confusing Rough Idle....

Reply #8 –
Quote from: DMC24guy
Codes:

31,
94,
44.

Those came up during the check.

                                                   
31EVP - EVP signal is/was out of range - EVP
 
44AIR system inoperative - Air Injection           
   
94AIR system inoperative - Air Injection
                         
 Transmission TCC circuit/solenoid problem - Transmissions

http://autorepair.about.com/od/troubleshooting/l/bldtcs29.htm
             
           
 

Best I can do for you I would suggest going to autozone or advanced have them pull the codes on thier comp, will tell you better. This is the best i could find online.