car wont start

catchx34 · 10-07-2008, 03:23 PM

Here's the problem.

I recently took out the PGM-FI Main Relay 1 located under the hood, to check another vehicle that had a problem with fuel delivery. Long story short, I put the original relay back in and now my car wont start. I dont hear the fuel pump turning on when the key is in the on position and realized that the bars on the temperature gauge goes all the way up and then goes dim as the key is still in the on position.

I tried to switch the main relay with the subrelay located one relay away from it but to no avail. Anyone got any ideas?

catchx34 · 10-07-2008, 03:24 PM

hmmm i ordered another main relay per FYI 05 Accord Recall may affect your 06 Civic I tried to scan for trouble codes but it wont communicate with the ecm. I hope this works...

catchx34 · 10-08-2008, 10:26 AM

well.. i changed both relays and it still doesnt start up. I got part #'s 39794-sda-902 and 004.

anyone?

Fatheadrr · 10-08-2008, 12:30 PM

Not that this will do anything at all but did you try resetting the ecu by taking the battery connection off.

RCracer05 · 10-08-2008, 12:48 PM

you have a short to ground, or a short to power some where. it put the ecm in a sleep mode so it doesnt get damaged.

arlo03 · 10-08-2008, 12:55 PM

Quote:

Originally Posted by Fatheadrr

Not that this will do anything at all but did you try resetting the ecu by taking the battery connection off.

catchx34 · 10-08-2008, 02:23 PM

ive disconnected the battery for about 30 mins twice yesterday to no avail. I tried to reset the ecm again today with a scan tool but still no communication.

catchx34 · 10-08-2008, 02:23 PM

Quote:

Originally Posted by RCracer05

you have a short to ground, or a short to power some where. it put the ecm in a sleep mode so it doesnt get damaged.

how do u put it in sleep mode? Isnt there a fuse or relay inside the ecm to prevent it from blowing up?

catchx34 · 10-08-2008, 11:22 PM

Hmm... Does anyone in Md have an HDS i can borrow to reset the ecm?

10-07-2008, 03:23 PM	#1 (permalink)
catchx34 Senior Member Join Date: Feb 2006 Location: MD Posts: 262 iTrader: 0 / 0%	car wont start Here's the problem. I recently took out the PGM-FI Main Relay 1 located under the hood, to check another vehicle that had a problem with fuel delivery. Long story short, I put the original relay back in and now my car wont start. I dont hear the fuel pump turning on when the key is in the on position and realized that the bars on the temperature gauge goes all the way up and then goes dim as the key is still in the on position. I tried to switch the main relay with the subrelay located one relay away from it but to no avail. Anyone got any ideas?

10-07-2008, 03:24 PM	#2 (permalink)
catchx34 Senior Member Join Date: Feb 2006 Location: MD Posts: 262 iTrader: 0 / 0%	hmmm i ordered another main relay per FYI 05 Accord Recall may affect your 06 Civic I tried to scan for trouble codes but it wont communicate with the ecm. I hope this works... Last edited by catchx34; 10-07-2008 at 03:26 PM.

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10-08-2008, 10:26 AM	#3 (permalink)
catchx34 Senior Member Join Date: Feb 2006 Location: MD Posts: 262 iTrader: 0 / 0%	well.. i changed both relays and it still doesnt start up. I got part #'s 39794-sda-902 and 004. anyone?

10-08-2008, 12:30 PM	#4 (permalink)
Fatheadrr Senior Member Join Date: Mar 2008 Location: Farmington Posts: 216 Ryan iTrader: 0 / 0%	Not that this will do anything at all but did you try resetting the ecu by taking the battery connection off.

10-08-2008, 12:48 PM	#5 (permalink)
RCracer05 Member Join Date: Jun 2008 Location: Winston-Salem Age: 24 Posts: 94 Preston iTrader: 0 / 0%	you have a short to ground, or a short to power some where. it put the ecm in a sleep mode so it doesnt get damaged.

10-08-2008, 02:23 PM	#7 (permalink)
catchx34 Senior Member Join Date: Feb 2006 Location: MD Posts: 262 iTrader: 0 / 0%	ive disconnected the battery for about 30 mins twice yesterday to no avail. I tried to reset the ecm again today with a scan tool but still no communication.

10-08-2008, 11:22 PM	#9 (permalink)
catchx34 Senior Member Join Date: Feb 2006 Location: MD Posts: 262 iTrader: 0 / 0%	Hmm... Does anyone in Md have an HDS i can borrow to reset the ecm?