Results 1 to 6 of 6
-
03-30-2012, 10:43 AM #1
- Join Date
- Mar 2012
- Location
- Naugatuck ct
- Posts
- 11
Blue- 98 camaro z28 6 speed
Pcm sending little signal to fuel pump relay
i have a 98 camaro z28, im leaning towardfs a pcm at this point which sucks, i have power from the fused line to the relay, i have ground, but no 2-3 sec power from pcm, its very dim power and for like a half of a second, tested the drk green/white right out of the pcm and it did the same thing just short little power when key turned, the pumps good cause it runs when i jump it in the relkay box from 12v to pump sockets, the car just died one day and then would start stall start stall like it ran out of gas, put gas in and towed it home and never ran again, please someone help
-
03-30-2012, 10:49 AM #2
Did you swap out pump relays? Check the connections for corrosion? If you run a bypass will the car run?
-
03-30-2012, 10:56 AM #3
- Join Date
- Mar 2012
- Location
- Naugatuck ct
- Posts
- 11
Blue- 98 camaro z28 6 speed
switched all 4 the relays in that box to see if it was a bad relay none of them change, like i said my problem is theres not enough power coming from the pcm, there should be a 2-3 second power to prime the pump and all im getting is a quick flash with a test light even did it right at the pcm to see if a wire shorted out and still the same quick flash, the pump and everything is still out of the car i did the trap door method but yes if i bypass the relay the pump with run
-
03-30-2012, 11:10 AM #4
Without referencing the service manual for a diagnostic procedure I would recommend checking the wire runs for abrasion or damage, then disconnect the battery and pull the connectors from the PCM. There have been instances where the pins in the connectors have corroded or broken off.
-
03-30-2012, 11:23 AM #5
- Join Date
- Mar 2012
- Location
- Naugatuck ct
- Posts
- 11
Blue- 98 camaro z28 6 speed
ok ill check that now, i have a hanse manual ive been going by, i hope i dont need a pcm cause there hard to find for the 98's but ima check the pins now and check to see if the pcm is getting power and ground while the plug is disconnected, i just put this new motor in and was thinking maybe a wire got cooked but there nothing that i can see, thanks for the quick reply, i think ill runa wire with a switch before i replace the dam pcm lol
-
03-30-2012, 12:06 PM #6
- Join Date
- Mar 2012
- Location
- Naugatuck ct
- Posts
- 11
Blue- 98 camaro z28 6 speed
all the pins on the pcm look good as long as the plug
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Help: Fuel pump relay hookup?
By lovemy87birdTx in forum General HelpReplies: 4Last Post: 07-26-2012, 03:34 AM -
Fuel pump relay signal wire
By JAX04 in forum GTOReplies: 10Last Post: 05-03-2012, 03:53 PM -
will faulty oil sending unit cause fuel pump to shut off
By 98z28duval in forum General HelpReplies: 8Last Post: 09-15-2007, 09:33 AM -
fuel pump assy/sending unit
By redz284u in forum General HelpReplies: 1Last Post: 12-19-2006, 03:15 PM -
Need elect. help with fuel pump relay
By Mach XII in forum General HelpReplies: 4Last Post: 08-03-2006, 06:18 AM
Bookmarks