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Topic: Proper injectors for stock Speed Density 5.0 (Read 1690 times) previous topic - next topic

Re: Proper injectors for stock Speed Density 5.0

Reply #15
yes, it was removed.  New gaskets and o rings were used in the intake/injector re-installation.  I'll check vacuum...
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 3.8 V6 - Rescue
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 5.0 V8 - Survivor

Re: Proper injectors for stock Speed Density 5.0

Reply #16
Vacuum is at 19-20 at idle
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 3.8 V6 - Rescue
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 5.0 V8 - Survivor

Re: Proper injectors for stock Speed Density 5.0

Reply #17
Have you checked for codes?

Re: Proper injectors for stock Speed Density 5.0

Reply #18
checked codes, none stored, CEL isn't on.  Noticed that the exhaust odor is more pungent than usual, and quite a lot of water/carbon came out of the tailpipes yesterday when i had it running/revved it up in the driveway.  Wondering if maybe the converter is getting clogged up, and my removal of the smog system didnt help things
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 3.8 V6 - Rescue
1988 Cougar LS - Cinnabar/Rose Quartz Metallic two tone - 5.0 V8 - Survivor

Re: Proper injectors for stock Speed Density 5.0

Reply #19
You should get a code 11 if there are no fault codes.
If you got no codes of any kind, it could mean the EEC software is not running.
Put the key in run without cranking and the fuel pump should run for a couple of seconds and shut off.
If it runs continuously, that's another indication the software is not running.

 

Re: Proper injectors for stock Speed Density 5.0

Reply #20
No codes can also be a blown signal return circuit in the EEC.
The one wire (pigtail) at the test connector is the signal return.
There are 5 sensors that will not be working if the signal return is blown:
MAP, TPS, ACT, ECT & EGR position.

With the key on, check for 5v between the O/W wire (ref v) and the BK/W wire (sig rtn) at the TPS.
People have fixed this problem by opening up the EEC and tracing pin 46 circuit to find the blown spot and soldering a wire across the open circuit.