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Topic: the vert isnt running very good...help (Read 1317 times) previous topic - next topic

the vert isnt running very good...help

85.5.0 tbi........when i crank it .it idels fine for a sec and then acts like it wants to shut off and if u dont give gas it will...know driving if you lightly give it gas its fine just really slow .but if u give it normal gas it just falls on its face.when you put it in revers and you dont 2 foot it .it stalls.....what is wrong with her
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the vert isnt running very good...help

Reply #1
codes?
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

the vert isnt running very good...help

Reply #2
i  only have a ob2 scanner .and its been so long since i done 0b1 i wouldnt know how
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the vert isnt running very good...help

Reply #4
sounds like a fuel pressure issue
louie  :birdsmily:
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My famous last words:
It seemed like a good idea at the time.        88TC R.I.P.      88 Sport build in progress

the vert isnt running very good...help

Reply #5
u know my gas tank does hold pressure when ever i take my gas cap off it all lets out ppppshshshshshshshh
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the vert isnt running very good...help

Reply #6
egr valve?

the vert isnt running very good...help

Reply #7
Quote
u know my gas tank does hold pressure when ever i take my gas cap off it all lets out ppppshshshshshshshh


Believe it or not, some older cars were actually designed to do this.  My '92 Topaz for instance...
Why your car is doing it, who knows...
I honestly doubt that would be the reason for your issue though.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

the vert isnt running very good...help

Reply #8
Quote from: BEARMAX;239201
85.5.0 tbi........when i crank it .it idels fine for a sec and then acts like it wants to shut off and if u dont give gas it will...know driving if you lightly give it gas its fine just really slow .but if u give it normal gas it just falls on its face.when you put it in revers and you dont 2 foot it .it stalls.....what is wrong with her


first pull codes key on engine off like described on the link provided as well as in my diy link.


-hook up fuel pres tester to the cfi and duct tape the guage to the windshield and observe presure while the transmission is going through gears and post your PSI results.

-If you have never had the CFI off, you **will** have carbon build up just beyond the gold fitting on the rear driver side of the CFI.  Take the CFI off and flip it over, chip away at anything that does not belong.  =see diy link for process.

-double check that you have nice bluish white spark.

-If your fuel injectors have never been serviced,, you may want to consider the injector screen delete / replacement - see diy link as well.

Primary thing is to pull code though.