Question about 1989 Chevrolet G10

1 Answer

Vacuum to the egr valve on my 89 chevy van with 3o5

I have a 89 chevy van with 305. the egr is not working properly. the vacuum out of the throttle body is good but there seem to be no vacuum coming out of the egr valve. is this because egr valve is stuck closed or is there another possible cause for no vacuum at the egr?
if the egr valve is stuck can i clean it by spraying or soaking it?

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert that has over 500 points.

  • Expert
  • 230 Answers

Stuck closed. You can't free these up. Gotta buy a new one.

Posted on Feb 13, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Where would I check for airfow and vacuum problems in a 1994 chevy Astor van.

Under throttle body. Take a can of carb cleaner(make sure you don't have plug wires breaking down) spray under throttle body if it changes the way the engine runs you found it. Egr and pcv are other less likely. Should be getting a lean code if you got a vacuum leak

May 08, 2015 | 1994 Chevrolet Astro

1 Answer

1989 chevy astro van rough idle/runaway acceleration

There is a "spider" injection system in the intake manifold. Check that.

Mar 13, 2014 | Cars & Trucks

1 Answer

1987 Chevy S-10 Throttle Body 2.8, Where does the Vacuum Line from the EGR Valve go to?

It should go to a vacuum switch that controls the EGR valve. Not sure of location usually on intake manifold. will have two vacuum lines and electrical wires that plug in.

Feb 08, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

My 89 chev will die out when i put it in gear its a 350 throttle body

You have a massive vacuum leak somewhere. Check egr valve, power brake booster and all vacuum lines

Mar 16, 2010 | 1989 Chevrolet C1500

1 Answer

How can i test the EGR valve on my 89 G20 van? a guy said try disconnecting and plugging the vacuum hose going to the EGR valve and then what? if the engine turn off its ok? if not its ok? thanks for the...

You should be able to feel underneath it. With your fingers on the bottom plate unplug the vacuum and the plate should move and move again when you plug it back in. Pinch the line when you take it off. If it doesn't move it needs to be replaced. Hope this helps.

Jan 18, 2010 | 1989 Chevrolet G20

2 Answers

Running rich.

The next step is the throttle position sensor.

May 01, 2009 | 1989 Chevrolet Celebrity

2 Answers

Egr valve is bad on my 1989 chevy with 305

You block it off before the valve on the metal pipe that runs to the EGR valve. The problem is that when you go to get it smogged you have to replace the EGR or it will not pass smog

Feb 13, 2009 | 1989 Chevrolet G10

1 Answer


Chk. your egr valve, that it is not sticking and you got vacume to it. could be carboned up and is not working.

Feb 13, 2009 | 1989 Chevrolet C/K 3500

2 Answers

I have a 88 chevy pickup 1500 with a 4.3 liter engine. I have high idle problem. I would do it once in a while and quit. Now it up and wont idle down. I have new throttle position sensor, map sensor. all...

is the check engine light on ? if it idling high chances are you have a vacuum leak take a can of carb cleaner and spray the egr valve and if the engine rpm changes replace egr valve the throttle body may also be plugged pull the vacuum line off the map sensor start vehicle and see if you have vacuum if not remove throttl body and clean vacuum passage hope this helps

Oct 05, 2008 | 1999 Chevrolet K1500

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

393 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77202 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides