Post to the EFV-8 Forum
Post Classified Ads
Shop the Online Store

User Login

Not Registered Yet? Click Here to Sign Up!

Early Ford V-8 Club Forum

FORUM RULES: Users agree to these Rules when using Forum.

The site administrator reserves the right to change the terms and conditions of the user agreement without prior notice to the user. It is the responsibility of the user to regularly review the terms of this agreement.

The user agrees to the following terms:

All information that you provide to us for your membership is correct.
You will not use your membership to spam, harrass, or exploit other members in any way.
Vulgar, Abusive, Racist and Sexist Language will not be tolerated.
Commercial-type sales postings will not be allowed.
No mass posting or flooding of the boards is allowed.
No Advertising of parts or cars; no Ebay or business/commercial ads (please use the "Classified" for ads Wanted or For Sale).
VIEWING MULTIPLE TOPICS ON SCREEN: You can choose to see more than 10 Topics at a time ... Log In and choose "Preferences" from the top bar on the Forum page. Scroll down and Change the "Default Topics Returned" parameter to 25 or 50, and save the changes. Since this setting is stored in your browser 'cookies' (if enabled), it seems to use that stored value even if you are not logged in. So, if you use a PC that you haven't logged into the forum from, the setting still seem to remain at the default.
EXTERNAL PHOTO LINKS ON FORUM: You can still use external photo links in your posts on the new forum. They follow the rules of any link in that they have to have the URL link qualified down to the full image file name (example: .jpg). The links will open in a new browser window, the same as an uploaded image attached to a post. Since an image attachment to any post does not display inline with the post, the results are the same. You can use multiple external links within a post. This link is from photos on a site from Don Clink's 'Deuce@75' albums:

http://donclink.com/deuce_75_1/images/dscn2950.jpg

Using links from photo sites such as Photobucket can help in "size" issue with uploaded attachment files. For best viewing in web browsers, photos should be around the 800x600 pixel range, and probably not more than 1024x768. Most cameras today store HUGE jpg image files, as the default settings are in the 7, 8, 10, and 12Mb image sizes. The image files that are then attached are very large, and the browser can't display the full image size without using the scroll bars. Use the re-sizing functions of your photo editing software to reduce the image to 800x600, which reduces the file sixe and the image load time in the browser. Don uses Google's free Picassa3 software, which is an excellent photo management product. All of the photo albums of the Deuce, Grand National, and Auburn that are links on the NORG site were built using Picassa's web creation functions. And it's free? (THANKS to Don Clink for the info!)
HOW DO I SHOW MY EMAIL ADDRESS ALONG WITH MY USERNAME? You can LogIn on the Forum, and select PREFERENCES. On this page Members can add optional information such as their City,State, Country; Occupation; Hobbies: list a Homepage; list AOL Instant Messanger Handle; Signature; "Make Email Address viewable to others;" and even change the number of Default Topics shown on a page. WHEN others click on your profile, they will see this information.

EFV-8 Club Forum / General Ford Discussion / 1936 gas gauge again

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: 1936 gas gauge again -- page: 1 2

Ron3181

01-05-2020 @ 5:49 AM

reply profile send p.m.

Member
Posts: 30
Joined: Sep 2018

I put in the new sending unit and the same thing occured again. That is with the motor rpm's are up the gauge goes all the way to full and will stay there as long as the rpm's are up (driving at 40 mph) By this time I know that the tank is not full and i am guessing there is just above half in the tank since I have driven around 60 miles since fill up. At idle the gauge shows just above half but when you start going again the rpm's go up so does the gauge reading and it stays up. Anybody have any ideals on what is going on. Thanks for the help.

37RAGTOPMAN

01-05-2020 @ 7:03 AM

reply profile send p.m.

Senior
Posts: 1962
Joined: Oct 2009

HI
was wondering if the car is wired correctly ?
seems like when the generator is working the gas gauge goes up and when it does not it goes down ?
I would recheck the wiring , does it have new wiring, or OLD ORIGINAL ?
also you might have dirty connections ? or corroded ?
were is the wire coming from that supplies voltage to the dash gauges ?
get back to us, to see what you found,
hope this helps, 1937RAGTOPMAN

trjford8

01-05-2020 @ 7:07 AM

reply profile send p.m.

Senior
Posts: 4219
Joined: Oct 2009

Did you run a ground wire from a screw on the sender to a clean spot on the frame as suggested in your previous post? You also mention a "new" sender. Didn't you just need a new float? If you put in a new sender(reproduction?) they do not work well with the original gauge. Need some clarity on just exactly what you have done since your previous post.

Ron3181

01-05-2020 @ 8:36 AM

reply profile send p.m.

Member
Posts: 30
Joined: Sep 2018

original problem was the float, I replaced the float and the gauge worked. however it did the same thing that the new sending unit is doing, that is the gauge goes all the way up at high RPM's and back down at idle to just above half which maybe the right level. All wiring is correct and new, no corroded connections. I did run the ground wire to frame with old unit and new unit. the new sending unit is a reproduction from Dennis Carpenter and they say the unit works with the original fuel gauge.

supereal

01-05-2020 @ 1:31 PM

reply profile send p.m.

Senior
Posts: 6819
Joined: Oct 2009

The problem is likely due to a rise in system voltage as the generator output goes up with engine speed. This is normally controlled by the large resistor mounted on the passenger side of the firewall. The resistance of this unit rises a system voltage goes up by heating the nichrome winding of the resistor. This not only affects the instruments, but prevents the ignition points and coil from burning up. Be sure your car has such a resistor, and that it is a genuine type. Put a voltmeter between a "hot" wire and ground to see what the voltage does as the engine speed rises before and after the resistor. There should be marked difference. You don't mention whether you car has been converted to 12 volts. If so, you need a "voltage dropper" in the feed to the gauges.

JayChicago

01-05-2020 @ 8:33 PM

reply profile send p.m.

Member
Posts: 484
Joined: Jan 2016

I believe the above information is NOT correct. The resistor does not affect the gauges.

In 36 the hot wire feeding the fuel and oil gauges did come off the resistor block, but from the input terminal being fed from the ignition switch. It was just a convenient place to pick-up a switched hot source; the resistor itself does not come into play here. The effects of the resistor would only be at it's output terminal, which only feeds the coil. I don't see how the resistor could affect the gauges.

UNLESS...the wire feeding up to the gauges was inadvertently put on the output terminal of the resistor block rather than the input terminal where it belongs. Then it would be fed after the resistor, and the gauges would be getting about 3 volts or less. I don't know if the gauges would work at all with only 3 volts. I wouldn't think it would be the symptoms described, the gauges would be getting 3 volts both moving or idling.

Ron3181

01-07-2020 @ 6:54 AM

reply profile send p.m.

Member
Posts: 30
Joined: Sep 2018

Still no answer, gauge needle goes up when RPM"s go up comes down at idle. I now have NO ideal how much gas is in the tank. I can not get any steady reading on the gauge.

01-07-2020 @ 9:31 AM

reply profile send p.m.

Senior
Posts: 1260
Joined: Nov 2009

Post some pictures of the old and new sending units you have....

JayChicago

01-07-2020 @ 2:51 PM

reply profile send p.m.

Member
Posts: 484
Joined: Jan 2016

RON3181
Sorry, I feel your frustration with this, but I think we are running out of ideas to help.

Earlier TomO suggested you check voltage at the sender, and check ground at the sender. You posted you did run a ground wire to frame, but I didn't see anything about voltage there. I would be interested to know voltage at the sender, and if there is a substantial difference in voltage with engine at idle vs. driving . Can you put a voltmeter on the wire at the sender, and take readings at both engine RPM's? Do this with the wire disconnected from sender. Let us know what you see.

This message was edited by JayChicago on 1-7-20 @ 4:57 PM

trjford8

01-07-2020 @ 4:09 PM

reply profile send p.m.

Senior
Posts: 4219
Joined: Oct 2009

I'm beginning to think that the poster has an old repo sender and now a new repo sender. Photos would be good of both senders.

<< previous || next >>

PAGE: 1 2

NOTE: YOU MUST BE A REGISTERED USER AND BE LOGGED IN TO POST (and reply to) messages in this forum. If you are a first time user, please click the CREATE A NEW ACCOUNT in the masthead above to register and Log In. After that, all you do is LOG IN to enjoy using this site.

DISCLAIMER: The V-8 Club does no independent testing of any of the opinions, thoughts or suggestions presented in the website on the Forum, in the Tech Tips section, or any section. A reader should consider the website to be a forum wherein differing solutions to a particular set of circumstances may be discussed. Ultimately, the selection of an item for an individual's vehicle must be based upon the independent study of the vehicle owner in consultation with people in the hobby and restoration experts.

Early Ford V-8 Club Forum

Merchandise Questions

Membership Questions