From the factory the 85 3.8 should have only a low pressure in tank pump
Its CFI
1985 mustang cfi has an in tank pump from what I have found.
Hard to tell without getting it up off the ground, but I will say either the gauge or the sender doesn't work in the car because the fuel gauge doesn't move at all and i've got a yellow light for low fuel all the time. So I'm guessing my sender is bad as well.Now I read some posts about swapping a 86 up pump but there was a bit of a discussion about the sender, I think they were speaking about the gauge sender.
The in line pump have factory looking wiring?
Now I read some posts about swapping a 86 up pump but there was a bit of a discussion about the sender, I think they were speaking about the gauge sender.
The in line pump have factory looking wiring?
Gauge sender is separate from the in tank pump
Might have a heavy float is all
Pull sender when you replace the in tank pump and inspect / test
Right now it's surging a lot. It cranks up just fine it seems but surging a lot, bad throttle response almost dies out if you rev it.What is the symptom of the car? If no symptom, I don't think you have anything bad (like the fuel pressure regulator) if it runs
25 is the spec for your 3.8's CFI (most are lower )(around 14)
Dropping to 15 is suspect (one of your 2 CFI injectors might be leaking / drizzling)
What is the symptom of the car? If no symptom, I don't think you have anything bad (like the fuel pressure regulator) if it runs
25 is the spec for your 3.8's CFI (most are lower )(around 14)
Dropping to 15 is suspect (one of your 2 CFI injectors might be leaking / drizzling)
Here's an example of it running;Right now it's surging a lot. It cranks up just fine it seems but surging a lot, bad throttle response almost dies out if you rev it.
The serp belt? I've replaced it and it's on there good. Not loose, not too tight. It's on proper.See how loose the timing chain is for the surge
I'll have to buy a vacuum gauge kit, but where's the best place to test for vacuum on these cars?Grab a vacuum gauge and see if you have a steady needle.
Check timing and make sure all electrical connections in the ignition system are good.
Check vacuum lines.
What rpm is it idling at?
Still waiting on my vacuum gauge to show up, but I also went ahead and checked the ohms for the fuel injectors They are reading 2.4 ohms and 2.7 ohms. Are they supposed to be low impendence injectors? or are these on the verge of death?The vacuum tree at the back of the manifold or the vacuum manifold on the firewall.
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