Ford Mustang Forums banner

21 - 40 of 106 Posts

·
Registered
Joined
·
143 Posts
There is a fuel gauge permantly on the engine, 44psi (walbro 255 fuel pump) I will try to get the sensor on ebay.
Is the thermostat housing connected to the plastic coolant tank at the side of the radiator?
44 at idle or engine off?
follow your upper rad hose to the engine, thats your thermostaqt housing
I did unplug the IACV and the car idles fine, but lots of smoke coming out exhaust. I had the injectors changed recently 24lb excel. The car had the idling problem before I had the injectors changed. I noticed minor oil in the spark plug threads which I suspected was the O rings. ( I need to check that)
have you tuned for the injectors? based on your post about the old maf, im sure its not calibrated for the bigger injectors. Im almost positive this is your problem. swap back to factory 19lb injectors and youll probably be fine, or buy a maf thats calibrated for 24lbs.
Also, cleaning or replacing the IAC is most likely a part of your solution as well
 

·
Registered
Joined
·
60 Posts
Discussion Starter #22
aThanks, it had 24lb injectors in it before. Actually the car ran perfectly without the IACV connected from the garage to home. I possibly ran out of petrol on the driveway; I put 2 gallons in a few days later before I started it.
 

Attachments

·
Registered
Joined
·
60 Posts
Discussion Starter #23
The new injectors were 24lb (see pic) I had a receipt for the old ones from previous owner same box code from summit racing. the number on the injector itself was slightly different. 01D126B is the old injector Should be the same.
 

Attachments

·
Registered
Joined
·
60 Posts
Discussion Starter #24
44 at idle or engine off?
follow your upper rad hose to the engine, thats your thermostaqt housing

have you tuned for the injectors? based on your post about the old maf, im sure its not calibrated for the bigger injectors. Im almost positive this is your problem. swap back to factory 19lb injectors and youll probably be fine, or buy a maf thats calibrated for 24lbs.
Also, cleaning or replacing the IAC is most likely a part of your solution as well
44 WITH ENGINE ON
 

·
Registered
Joined
·
60 Posts
Discussion Starter #25
44 at idle or engine off?
follow your upper rad hose to the engine, thats your thermostaqt housing

have you tuned for the injectors? based on your post about the old maf, im sure its not calibrated for the bigger injectors. Im almost positive this is your problem. swap back to factory 19lb injectors and youll probably be fine, or buy a maf thats calibrated for 24lbs.
Also, cleaning or replacing the IAC is most likely a part of your solution as well
44 WITH ENGINE ON.
 

·
Registered
Joined
·
143 Posts
No I haven't, I'm a novice, could I check it myself, or easily replace the parts?
Yes, its a little metal pot on the fuel rail. Should have a hose to the intake manifold. With the car off, check the condition of the vac hose, then remove it from the regulator. If gas squirts out, it needs replaced.
 

·
Registered
Joined
·
60 Posts
Discussion Starter #30
THANK YOU so much.. try tomorrow, Actually that petrol gauge is 44 with the key on, will check the engine running pressure tomorrow too. I thought it was 39 before!
 

·
Registered
Joined
·
3,913 Posts
#1 - you can’t use 24# injectors in a GT without changing the tune in the EEC.
 

·
Registered
Joined
·
60 Posts
Discussion Starter #33
#1 - you can’t use 24# injectors in a GT without changing the tune in the EEC.
There was 24lb injectors in it. It was tuned for them 10 years ago.... I just changed the injectors for new ones. actually they just needed the Orings changed.
 

·
Registered
Joined
·
3,913 Posts
Is the CEL on?
Try to pull the codes. If you can’t retrieve codes, that is a sign if a faulty EEC. Another sign of a faulty EEC is black smoke out the tailpipes, poor running/idle.

How was it tuned for the injectors?
 

·
Registered
Joined
·
60 Posts
Discussion Starter #37
No fault lights on the dashboard. It wasn't tuned for the replacement injectors; I assumed they were replacing exact parts. Forgive my ignorance but is the EEC the computer? The last owner of the car had it tuned by specialist. It has been running on those 24lb accels since 2008, It wasn't smoking when I drove it home from changing the injectors. although it was only a third of a mile home.
 

·
Registered
Joined
·
23,197 Posts
you changed injectors, without a retune?

are they identical?
 

·
Registered
Joined
·
23,197 Posts
sounds like you have a adjustable fuel pressure regulator

remove the vac line, cap it, and restart, if you can let it run for a bit, check the regulator, ensure no fuel is coming out of it.

cheesy adjustable regs have a nasty habit of failing often
 
21 - 40 of 106 Posts
Top