89 Burb..no fuel from injectors! Need help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

seanu · 11-01-2006, 10:39 PM

My wife was driving the 89 burb 4wd today and it just shut off on her.

I have narrowed it down to no fuel from the injectors, they have just shut off. I have fuel up to them (checked that)..but they are not firing.

Does anyone know what would shut down the injectors? I know on my 91 Olds it has a low oil shut off, but I didn't think the burb had that??

Any thoughts, or ideas?

thanks

Jonboy · 11-02-2006, 06:45 PM

you might check to make sure the wiring at the plug is intact. Also, check the oil pressure gauge. the sending unit for the oil pressure gauge also has a low pressure switch on it, and will kill electricity to the pump on an EFI truck.

seanu · 11-03-2006, 10:15 PM

Yeah...the pump is running fine..I already checked that...but I did find out that the Ignition Control Module can go bad and when that happends, it doesnt send a signal to the ECM to tell it to fire the injectors.

I am going to check the ICM tomorrow, by swapping it out with another and see if that solves the problem.

Russell · 11-04-2006, 12:45 AM

Ignition module would be my guess as well

seanu · 11-04-2006, 09:59 PM

Well, the ICM didn't fix the problem...it was in the dist. it's-self. The magnetic pickup on the dist must have gone bad...took a new dist. to fix the problem.

So it's fixed...

but it cost me $100 bucks

aggiedave98 · 11-10-2006, 01:13 AM

so how did that cause it to stop giving you fuel? curious so i know for the future... thanks.

USAFgunner · 11-29-2006, 01:55 AM

Quote:

Originally Posted by aggiedave98

so how did that cause it to stop giving you fuel? curious so i know for the future... thanks.

Cause it provides a reference to the ecm to fire the injectors. ECM controls the ground circuit on the injector

aggiedave98 · 11-29-2006, 09:41 AM

ahhhh, thanks!

11-01-2006, 10:39 PM	#1
seanu Too many projects!!! Join Date: Jul 2000 Location: Jacksonville, Florida Posts: 508	89 Burb..no fuel from injectors! Need help! My wife was driving the 89 burb 4wd today and it just shut off on her. I have narrowed it down to no fuel from the injectors, they have just shut off. I have fuel up to them (checked that)..but they are not firing. Does anyone know what would shut down the injectors? I know on my 91 Olds it has a low oil shut off, but I didn't think the burb had that?? Any thoughts, or ideas? thanks __________________ Sean 1995 Buick Roadmaster Sedan 2004 Chevy Trailblazer 5.3L V8 1963 Chevy Biscayne 4D Sedan 1971 Chevy C10 (now have 70 cab & frame) 1968 Chevy C10 (parts for the 70) 1991 Oldsmobile Custom Cruiser (Chevy 355 motor) 1937 Pontiac 8 4D Touring Sedan (in pieces) Jacksonville, Florida

11-02-2006, 06:45 PM	#2
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: 89 Burb..no fuel from injectors! Need help! you might check to make sure the wiring at the plug is intact. Also, check the oil pressure gauge. the sending unit for the oil pressure gauge also has a low pressure switch on it, and will kill electricity to the pump on an EFI truck.

11-03-2006, 10:15 PM	#3
seanu Too many projects!!! Join Date: Jul 2000 Location: Jacksonville, Florida Posts: 508	Re: 89 Burb..no fuel from injectors! Need help! Yeah...the pump is running fine..I already checked that...but I did find out that the Ignition Control Module can go bad and when that happends, it doesnt send a signal to the ECM to tell it to fire the injectors. I am going to check the ICM tomorrow, by swapping it out with another and see if that solves the problem. __________________ Sean 1995 Buick Roadmaster Sedan 2004 Chevy Trailblazer 5.3L V8 1963 Chevy Biscayne 4D Sedan 1971 Chevy C10 (now have 70 cab & frame) 1968 Chevy C10 (parts for the 70) 1991 Oldsmobile Custom Cruiser (Chevy 355 motor) 1937 Pontiac 8 4D Touring Sedan (in pieces) Jacksonville, Florida

11-04-2006, 12:45 AM	#4
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: 89 Burb..no fuel from injectors! Need help! Ignition module would be my guess as well __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

11-04-2006, 09:59 PM	#5
seanu Too many projects!!! Join Date: Jul 2000 Location: Jacksonville, Florida Posts: 508	Re: 89 Burb..no fuel from injectors! Need help! Well, the ICM didn't fix the problem...it was in the dist. it's-self. The magnetic pickup on the dist must have gone bad...took a new dist. to fix the problem. So it's fixed... but it cost me $100 bucks __________________ Sean 1995 Buick Roadmaster Sedan 2004 Chevy Trailblazer 5.3L V8 1963 Chevy Biscayne 4D Sedan 1971 Chevy C10 (now have 70 cab & frame) 1968 Chevy C10 (parts for the 70) 1991 Oldsmobile Custom Cruiser (Chevy 355 motor) 1937 Pontiac 8 4D Touring Sedan (in pieces) Jacksonville, Florida

11-10-2006, 01:13 AM	#6
aggiedave98 Senior Member Join Date: Aug 2003 Location: Sugar Land, TX Posts: 1,007	Re: 89 Burb..no fuel from injectors! Need help! so how did that cause it to stop giving you fuel? curious so i know for the future... thanks.

11-29-2006, 09:41 AM	#8
aggiedave98 Senior Member Join Date: Aug 2003 Location: Sugar Land, TX Posts: 1,007	Re: 89 Burb..no fuel from injectors! Need help! ahhhh, thanks!



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