Print Page - 86 t-bird not running right

Title: 86 t-bird not running right
Post by: buggmann on January 12, 2010, 09:46:16 PM

i have a 1986 t-bird it has a 3.8 v6 tbi

here's how it is

idles fine but put it in gear some times
it will die it acts like its not getting fuel but i put in a new
pump new relays new filter and it was fine till about a week
ago now when you drive her and come to a stop some times she
will shake then die or just die all together some times if you undo
the batt it will run fine then start up all over again but the car has no power just no sure if the car had any power in that v6 to start with

any help

thanks buggmann

Title: 86 t-bird not running right
Post by: blackcougar71 on January 13, 2010, 12:17:57 AM

i would start checking the fuel injectors and check the fuel pressure.

Title: 86 t-bird not running right
Post by: thunderjet302 on January 13, 2010, 05:37:55 PM

Pull codes before you replace parts.

Title: buggmann
Post by: buggmann on January 13, 2010, 07:31:22 PM

Quote from: blackcougar71;306149

i would start checking the fuel injectors and check the fuel pressure.

how do you do that on that tbi set up

Pull codes before you replace parts.

how do you pull codes on this car i did not think you could do that

thanks buggmann

Title: 86 t-bird not running right
Post by: Loaded87IROC on January 13, 2010, 07:50:33 PM

This link will give you all you should need to test. http://www.fordfuelinjection.com/?p=13

The self test connector on my 84 V6 is located on the drivers side by the washer fluid reservoir. Also the schrader valve to test the FP should be on the drivers side of the throttle body.

:Edit for better pics in this link: http://www.therangerstation.com/tech_library/OBD_I.html

Title: 86 t-bird not running right
Post by: softtouch on January 14, 2010, 02:01:17 AM

Quote from: Loaded87IROC;306231

:Edit for better pics in this link:http://www.therangerstation.com/tech_library/OBD_I.html

These are also better instructions than the fordfuelinjection site.
Jumpering the STI to the Sig RTN is the proper way to activate the self test and pull codes.

Title: 86 t-bird not running right
Post by: buggmann on January 14, 2010, 03:59:01 AM

Quote from: softtouch;306262

These are also better instructions than the fordfuelinjection site.
Jumpering the STI to the Sig RTN is the proper way to activate the self test and pull codes.

im not to sure what ((the STI to the Sig RTN )) are more info please
not use to working on a car like this to much comp stuff if i cant fix it
i just might sell it to put in to my other car i can work on that one

Title: 86 t-bird not running right
Post by: tbirdsps on January 14, 2010, 12:40:02 PM

My 86 did the same thing.

It was the fuel pump. It took a long time to die completely but I went nuts trying to figure it out. Only after it conked out completely and replaced did the car run right.

Also don't forget vacuum leaks. I had the brake booster big hose rot on the bottom and didn't notice until it failed the smog test. New hose and all was well.

Title: 86 t-bird not running right
Post by: softtouch on January 14, 2010, 02:15:52 PM

Quote from: buggmann;306266

im not to sure what ((the STI to the Sig RTN )) are more info please
not use to working on a car like this to much comp stuff if i cant fix it
i just might sell it to put in to my other car i can work on that one

Did you look at the link?

Title: 86 t-bird not running right
Post by: buggmann on January 15, 2010, 12:57:43 AM

Quote from: tbirdsps;306281

My 86 did the same thing.

It was the fuel pump. It took a long time to die completely but I went nuts trying to figure it out. Only after it conked out completely and replaced did the car run right.

Also don't forget vacuum leaks. I had the brake booster big hose rot on the bottom and didn't notice until it failed the smog test. New hose and all was well.

the pump is new as are the relays and the filter

Title: buggmann
Post by: buggmann on January 15, 2010, 01:00:32 AM

Quote from: softtouch;306284

Did you look at the link?

i have not had a lot of time to look at the link but i did take a look at it
and i think it will help out i will read more on the link in a little bit
thank you

if this is not what is making it do this any more ideas on the prob

thanks buggmann

Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: buggmann on January 12, 2010, 09:46:16 PM