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B
beady
Full Access Member
·
From
Tidewater/Northern Neck VA
Joined
Jul 20, 2024
Last seen
Wednesday at 7:14 PM
Posts
50
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B
beady
replied to the thread
1987 454 TBI down on power, runs good otherwise
.
So following up on the solution. The thermostatically controlled flapper on the air filter housing didn’t have the hose running down to...
Monday at 12:42 PM
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
So to close the loop, I repaired those two positive wires and the issues went away. Scanner can talk to ecu and reports no codes now...
Monday at 12:36 PM
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
Could be onto something here, lol. Wires were pinched by the sheet metal starter heat shield.
Sunday at 4:47 PM
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
So from tracing the circuits on the schematic, it looks like I should have always on +12v at two pins on the bulkhead connectors...
Sunday at 2:23 PM
B
beady
reacted to
jimmy87's post
in the thread
1987 injectors no power
with
Like
.
I wanted to provide and update to my issue. After buying a new ecm and icm, I found the problem, the ecm was loosing power on the...
Aug 31, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
It looks to have a remanufactured ecu if that helps point to something.
Aug 31, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
The truck starts and runs on starting fluid. I don’t know which circuits are powered with the key in each position offhand. Does every...
Aug 31, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
I pulled each fuse out of the block and individually checked each one using my meter in continuity check mode. I checked both ecu fuses...
Aug 31, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
It was about $250, apparently one of the only hand held tools that will read the ecu live data. https://www.ebay.com/itm/235344132189...
Aug 30, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
Alright, so I bought a good scan tool that can read some of the live data from the ECU as I figured that would be useful in the long...
Aug 30, 2024
B
beady
replied to the thread
1987 454 TBI down on power, runs good otherwise
.
It will speed up with engine speed, but it feels like it only has 100 hp. Slow to accelerate, and if it kicks down it just won’t...
Aug 30, 2024
B
beady
reacted to
YakkoWarner's post
in the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
with
Like
.
I wonder if someone got tired of seeing it on all the time (or was attempting to get thru an inspection/sale) and just yanked it. See...
Aug 28, 2024
B
beady
reacted to
gmbellew's post
in the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
with
Like
.
if it is the original cluster and the wiring hasn't been hacked to pieces there is a check engine light. on my 1990, it is bottom right...
Aug 27, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
Yeah, I’m a little leery of frying the ecu. I have a fluke that has a simulated analog output (bar graph on the bottom of the screen)...
Aug 26, 2024
B
beady
replied to the thread
‘87 454 TBI, NO Fuel spray, HAS fuel pressure, has 12v @ injectors, has spark
.
I built a device to pull and reset the blink codes on my w124 Mercedes, I bet it might work fit this. Looks like pin 4 is the data out...
Aug 26, 2024
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