# What size EGR Valve nut wrench for 1992 G20 van **URL:** \ **Category:** General Discussion\ **Tags:** van, chevrolet\ **Created:** [March 31, 2021, 1:50am UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885 "2021-03-31T01:50:35Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [April 1, 2021, 1:17pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/21 "2021-04-01T13:17:49Z")
I would never allow a left handed monkey under the hood of one of my vehicles. ---
**Author:** ![fleetmanager](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fleetmanager/32/24111_2.png) [@fleetmanager](https://community.cartalk.com/u/fleetmanager)\ **Post date:** [April 1, 2021, 1:19pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/22 "2021-04-01T13:19:59Z")
My dad had both left and right handed but, I never saw them both at the same time. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [April 1, 2021, 1:32pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/23 "2021-04-01T13:32:34Z")
Thank you for posting pics of an actual monkey wrench. Lots of times folks refer to pipe wrenches as monkey wrenches - not the same tool. ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [April 1, 2021, 2:16pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/24 "2021-04-01T14:16:56Z")
![Sb0ZgAX](https://global.discourse-cdn.com/cartalk/original/3X/3/7/3780409ba3f2a588be81a90e27d3f1ce66497bee.jpeg) Here’s a pic of an actual monkey with a wrench. EGR bolts should be either 3/8 or maybe 13mm, but you’ll need a crescent wrench to remove the idle air valve which is in the way. And the plastic wire connector to the IAC will possibly break since it’s 30 years old. ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [April 1, 2021, 2:27pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/25 "2021-04-01T14:27:29Z")
Surely you didn’t let that left handed monkey under the hood of your ride!!! ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [April 1, 2021, 7:31pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/26 "2021-04-01T19:31:27Z")
I’m too late to the party to add anything of value. ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [April 1, 2021, 7:39pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/27 "2021-04-01T19:39:43Z")
> [@Rod-Knox](#): > > Surely you didn’t let that left handed monkey under the hood of your ride!!! He’s the new lead mechanic around here. He’ll work for bananas. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [April 1, 2021, 7:40pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/28 "2021-04-01T19:40:58Z")
> [@asemaster](#): > > lead mechanic around here Are you sure he wouldn’t be better suited to be the new Service Writer? Or is he over-qualified? ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [April 1, 2021, 9:46pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/29 "2021-04-01T21:46:35Z")
Right now the 2 service writers we have are the best I have ever worked with. One of them works 4 days a week so on Fridays I am a service writer. The monkey is certainly more qualified than I am! ---
**Author:** ![JHulscher05\_174532](https://avatars.discourse-cdn.com/v4/letter/j/cdc98d/32.png) [@JHulscher05\_174532](https://community.cartalk.com/u/JHulscher05_174532)\ **Post date:** [April 2, 2021, 8:09pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/30 "2021-04-02T20:09:36Z")
Well, I’m done, like anybody cares, but, if somebody ever does a search of this topic. You need a 1/2 inch wrench for a 1992 G20 5.7L 350 automatic. I still think a tiny little adjustable wrench would have made it a lot easier. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [April 2, 2021, 9:11pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/31 "2021-04-02T21:11:35Z")
> [@JHulscher05\_174532](#): > > You need a 1/2 inch wrench for a 1992 G20 5.7L 350 automatic. Just one 1/2 inch wrench for anything on a 1992 G20 5.7 automatic ? ---
**Author:** ![JHulscher05\_174532](https://avatars.discourse-cdn.com/v4/letter/j/cdc98d/32.png) [@JHulscher05\_174532](https://community.cartalk.com/u/JHulscher05_174532)\ **Post date:** [April 2, 2021, 10:35pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/32 "2021-04-02T22:35:41Z")
Why do you gotta be a smart ass. I’m trying to help people. It’s not easy to even get a tape measure in there. Oh, and ratchets wont even fit to try sizes. Stick with your Volvo. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [April 2, 2021, 10:38pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/33 "2021-04-02T22:38:17Z")
Glad you got it fixed, life is good? ---
**Author:** ![Jerome-Silverman](https://avatars.discourse-cdn.com/v4/letter/j/71e660/32.png) [@Jerome-Silverman](https://community.cartalk.com/u/Jerome-Silverman)\ **Post date:** [April 3, 2021, 12:03am UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/34 "2021-04-03T00:03:17Z")
Is the nut part of the replacement? Just measure that. ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [April 3, 2021, 1:22pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/35 "2021-04-03T13:22:31Z")
> [@Jerome-Silverman](#): > > Is the nut part of the replacement? Just measure that. He has already figure out it’s a 1/2", and has replaced the part > [@JHulscher05\_174532](#): > > Well, I’m done, like anybody cares, … You need a 1/2 inch wrench ---
**Author:** ![Jerome-Silverman](https://avatars.discourse-cdn.com/v4/letter/j/71e660/32.png) [@Jerome-Silverman](https://community.cartalk.com/u/Jerome-Silverman)\ **Post date:** [April 3, 2021, 6:35pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/36 "2021-04-03T18:35:33Z")
I caught that, just wondered why the question arose. Also, auto fasteners have all been metric for many years so that would be a 12mm or a 13mm. I remember having to heat and bend the shanks of end wrenches into complex shapes to get to a fastener because there was no other way to get to it. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [April 3, 2021, 9:03pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/37 "2021-04-03T21:03:19Z")
> [@Jerome-Silverman](#): > > Also, auto fasteners have all been metric for many years so that would be a 12mm or a 13mm. A 29 year old domestic had LOTS of non-metric nuts and bolts. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [April 3, 2021, 9:14pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/38 "2021-04-03T21:14:03Z")
I lost my 14 mm socket, thinking a 17/32 socket worked, ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [April 3, 2021, 9:20pm UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/39 "2021-04-03T21:20:10Z")
> [@Jerome-Silverman](#): > > auto fasteners have all been metric for many years The differential cover bolts on my 2014 Mustang are still 5/16 bolt x 1 inch English. Same for my 2004 GM SUV. The industry didn’t just change them all overnight, only when a part was re-tooled. That G20’s engine is a Gen 1 350 V8. Lots of English fasteners still used on that one. ---
**Author:** ![Samnono](https://avatars.discourse-cdn.com/v4/letter/s/4491bb/32.png) [@Samnono](https://community.cartalk.com/u/Samnono)\ **Post date:** [April 5, 2021, 6:41am UTC](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885/40 "2021-04-05T06:41:15Z")
Based on what I read, I don’t think you should attempt to remove the EGR. First of all, anyone who attempts to use an adjustable metric wrench probably doesn’t have the knowledge to remove it without dropping a washer or nut into engine. B) you probably haven’t done trouble shooting and you’ll end up replacing something unnecessarily. 3) you probably have a silicon based lubricant which will kill your exhaust sensor. 4) you’re too cheap to buy a good set of tools means you have set up yourself for failure. Best thing you can do is go to the section of cartalk where customers have recommended mechanics in your area to diagnose your problems and fix your van properly. Sorry for the tough love. [Previous page](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885.md?page=1) [Next page](https://community.cartalk.com/t/what-size-egr-valve-nut-wrench-for-1992-g20-van/175885.md?page=3)