EGR Valve

SlamedDawg · 10-02-2003, 06:12 PM

Hi I'm new here but I have a Question about my '86 Mustang 4 banger. I was wondering if I was to remove my EGR valve would it effect how the car runs? Its shot anyway but I don't want to pay the $70 to get a new one. If anyone knows or has any info I would greatly appriciate it.

Thanks,
Nick

stanger9219 · 10-07-2003, 12:18 AM

wouldnt make your car run any better, i can tell ya that much. i disconnected it on my 5.0 and it idled and revd about the same. put the new one on and it ran like new again. hope its some help if any at all.

84LX89GT · 10-09-2003, 01:29 AM

If you're dead set on removing it, plug the vacuum line going to it and make sure that the pintle is seated against the EGR housing inside (so you're not flowing EGR all the time).

Why is it shot? A common problem is for EGR valves to get coated in carbon and stick in one position. If you take off the EGR valve and tap the pintle against a table or something hard to break the carbon loose, then use carburetor cleaner (let soak for 1/2 hour or so) and clean it out, most of the time you'll fix it. If the vacuum diaphragm has failed, then there's nothing you can do to fix it.

By disabling EGR you'll probably (if anything) have a part throttle pinging concern since the EGR is there to cool down the combustion chamber while it's running lean at part throttle because of the carburetor's stock jetting (mustangs got fuel injected 2.3L in '87 didn't they

).

You could try and disable the valve, and if nothing happens, then no harm done.

10-02-2003, 06:12 PM	#1
SlamedDawg Registered Member Join Date: Oct 2003 Location: Luther, Ok. Posts: 1	EGR Valve Hi I'm new here but I have a Question about my '86 Mustang 4 banger. I was wondering if I was to remove my EGR valve would it effect how the car runs? Its shot anyway but I don't want to pay the $70 to get a new one. If anyone knows or has any info I would greatly appriciate it. Thanks, Nick

10-07-2003, 12:18 AM	#2
stanger9219 Registered Member Join Date: Sep 2003 Location: st. louis, MO Posts: 197	wouldnt make your car run any better, i can tell ya that much. i disconnected it on my 5.0 and it idled and revd about the same. put the new one on and it ran like new again. hope its some help if any at all. __________________ 98 Cobra, CAI, Flowmasters, o/r h-pipe. 4.10s, Hurst shifter.

10-09-2003, 01:29 AM	#3
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	If you're dead set on removing it, plug the vacuum line going to it and make sure that the pintle is seated against the EGR housing inside (so you're not flowing EGR all the time). Why is it shot? A common problem is for EGR valves to get coated in carbon and stick in one position. If you take off the EGR valve and tap the pintle against a table or something hard to break the carbon loose, then use carburetor cleaner (let soak for 1/2 hour or so) and clean it out, most of the time you'll fix it. If the vacuum diaphragm has failed, then there's nothing you can do to fix it. By disabling EGR you'll probably (if anything) have a part throttle pinging concern since the EGR is there to cool down the combustion chamber while it's running lean at part throttle because of the carburetor's stock jetting (mustangs got fuel injected 2.3L in '87 didn't they ). You could try and disable the valve, and if nothing happens, then no harm done. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

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