How do you know if your governor is bad? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Guy Dudebro · 05-08-2015, 05:39 PM

I'm having shifting issues on my TH 400. It won't come out of 1rst gear. The RPM will go up and never shift, especially when going up hill, and there's a pop that comes from the exhaust.

I pulled the governor out and it seems to be fine. The nylon grooves look intact. Is that the only symptom of a worn governor?
I'm also replacing the vacuum modulator and changing the fluid and gasket while I'm at it. Anything else I should look at?

Jonlopes · 05-08-2015, 05:42 PM

Quote:

Originally Posted by Guy Dudebro

I'm having shifting issues on my TH 400. It won't come out of 1rst gear. The RPM will go up and never shift, especially when going up hill, and there's a pop that comes from the exhaust.

I pulled the governor out and it seems to be fine. The nylon grooves look intact. Is that the only symptom of a worn governor?
I'm also replacing the vacuum modulator and changing the fluid and gasket while I'm at it. Anything else I should look at?

The last time this happened to me it was the vacuum modulator. One other symptom I had was it was sucking tranny fluid through the bad modulator , through the vacuum line, and into the engine creating lots of smoke.

If it is the modulator you should still be able to manually shift from L2 to L1 to D.

First c10 · 05-08-2015, 06:15 PM

His last name is BROWN!!!!

Sorry I could not resist!! Cali guys will get it!!!

check the modulator like Jonlopes said!

**68bowtie** · 05-08-2015, 06:19 PM

Quote:

Originally Posted by First c10

His last name is BROWN!!!!

Sorry I could not resist!! Cali guys will get it!!!

check the modulator like Jonlopes said!

we have a good running streak...

hugger6933 · 05-08-2015, 06:24 PM

i thought you recalled that guy then he is running things again? The 400 ought to powershift as it used to be called that is when it holds first and then hop to second after the rpms get so high. or maybe I just dreamed that. Jim

First c10 · 05-08-2015, 06:29 PM

That was another color Gray Davis was recalled. I just remember years ago where my vacuum line came off my modulator and it would not shift out of first gear

rcrahn · 05-08-2015, 06:48 PM

Paging Moonbeam....earth to Moonbeam....how's your bullet train to Coalinga coming along....Phase 1 projected costs - $68 BILLION making it the most expensive public works project in US history...

Let me apologize now for the outburst....just explaining why I'll be leaving CA

First c10 · 05-08-2015, 07:02 PM

Quote:

Originally Posted by rcrahn

Paging Moonbeam....earth to Moonbeam....how's your bullet train to Coalinga coming along....Phase 1 projected costs - $68 BILLION making it the most expensive public works project in US history...

Let me apologize now for the outburst....just explaining why I'll be leaving CA

That's funny. The bullet train to Coalinga. Smh

**leddzepp** · 05-08-2015, 08:55 PM

Check the vacuum modulator, same thing happened with mine a while back. The vacuum line was cracked.

El Dorado Jim · 05-09-2015, 12:31 AM

XVIII. Posts regarding politics or religion are strongly discouraged. These posts tend to create pissing matches and will be closed.

**leddzepp** · 05-09-2015, 01:16 AM

Please keep politics out of this, I do not want to close a thread in which the OP needs real help in fixing a problem with his truck. Thank you.

First c10 · 05-09-2015, 01:29 AM

Sorry I was just cracking a joke. My apologizes to guy dudebro and the rest.

**71CHEVYSHORTBED402** · 05-09-2015, 02:37 AM

Your tranny is all over the map. Had that happen on a 78 Caprice. Amco said I needed a new tranny. The local replaced the governor for 60 bucks. But that was about 1980.

05-08-2015, 05:39 PM	#1
Guy Dudebro Registered User Join Date: May 2014 Location: Edmond, OK Posts: 72	How do you know if your governor is bad? I'm having shifting issues on my TH 400. It won't come out of 1rst gear. The RPM will go up and never shift, especially when going up hill, and there's a pop that comes from the exhaust. I pulled the governor out and it seems to be fine. The nylon grooves look intact. Is that the only symptom of a worn governor? I'm also replacing the vacuum modulator and changing the fluid and gasket while I'm at it. Anything else I should look at?

05-08-2015, 06:15 PM	#3
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,705	Re: How do you know if your governor is bad? His last name is BROWN!!!! Sorry I could not resist!! Cali guys will get it!!! check the modulator like Jonlopes said! __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!

05-08-2015, 06:24 PM	#5
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,257	Re: How do you know if your governor is bad? i thought you recalled that guy then he is running things again? The 400 ought to powershift as it used to be called that is when it holds first and then hop to second after the rpms get so high. or maybe I just dreamed that. Jim

05-08-2015, 06:29 PM	#6
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,705	Re: How do you know if your governor is bad? That was another color Gray Davis was recalled. I just remember years ago where my vacuum line came off my modulator and it would not shift out of first gear __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!

05-08-2015, 06:48 PM	#7
rcrahn Registered User Join Date: Jun 2007 Location: The West Posts: 767	Re: How do you know if your governor is bad? Paging Moonbeam....earth to Moonbeam....how's your bullet train to Coalinga coming along....Phase 1 projected costs - $68 BILLION making it the most expensive public works project in US history... Let me apologize now for the outburst....just explaining why I'll be leaving CA

05-08-2015, 08:55 PM	#9
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,985	Re: How do you know if your governor is bad? Check the vacuum modulator, same thing happened with mine a while back. The vacuum line was cracked. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

05-09-2015, 12:31 AM	#10
El Dorado Jim Registered User Join Date: Dec 2009 Location: El Dorado Ca Posts: 3,374	Re: How do you know if your governor is bad? XVIII. Posts regarding politics or religion are strongly discouraged. These posts tend to create pissing matches and will be closed. Last edited by leddzepp; 05-09-2015 at 01:13 AM.

05-09-2015, 01:16 AM	#11
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,985	Re: How do you know if your governor is bad? Please keep politics out of this, I do not want to close a thread in which the OP needs real help in fixing a problem with his truck. Thank you. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

05-09-2015, 01:29 AM	#12
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,705	Re: How do you know if your governor is bad? Sorry I was just cracking a joke. My apologizes to guy dudebro and the rest. __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!

05-09-2015, 02:37 AM	#13
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,129	Re: How do you know if your governor is bad? Your tranny is all over the map. Had that happen on a 78 Caprice. Amco said I needed a new tranny. The local replaced the governor for 60 bucks. But that was about 1980. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025



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