This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
Electric fuel pumps
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Electric fuel pumps
Several years ago I had an Aerostar van that was my tow vehicle which I really liked. About 5k past warranty it started getting low on power and check engine light on. took it to dealer, and he called with good news and bad news. good news, the fuel pump which was a 500 dollar repair had to be changed but Ford would cover it. Bad news, I had to pay for tune up. I did not think any of it was bad news.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
-
- 10+ Years
- Posts: 2784
- Joined: Tue Jul 22, 2008 12:44 pm
- Zip Code: 48370
- Tractors Owned: 184
- Location: Oxford, MI
Re: Electric fuel pumps
Your issue may very well be a failing fuel pump, but the cause of the failure needs to be found.
Low fuel pressure on the fuel rail will cause an engine to run lean. The O2 sensors will sense the lean condition and ask for more fuel causing the pump to work harder. The low fuel pressure may be due to a plugged fuel filter. Most cars today have a couple of them. One under the body probably near the footwell and one small one near the throttle body. Check your vehicle manual for the replacement schedule, but they should be replaced about every 35,000 to 75,000 miles. Some vehicles have an "in tank" filter.
This important service is often neglected because the "car runs fine".
Edit: Some vehicles have two fuel pumps. A high volume electric pump that moves the fuel to the engine compartment and a mechanical pump that is camshaft driven to pressurize the fuel rail.
Low fuel pressure on the fuel rail will cause an engine to run lean. The O2 sensors will sense the lean condition and ask for more fuel causing the pump to work harder. The low fuel pressure may be due to a plugged fuel filter. Most cars today have a couple of them. One under the body probably near the footwell and one small one near the throttle body. Check your vehicle manual for the replacement schedule, but they should be replaced about every 35,000 to 75,000 miles. Some vehicles have an "in tank" filter.
This important service is often neglected because the "car runs fine".
Edit: Some vehicles have two fuel pumps. A high volume electric pump that moves the fuel to the engine compartment and a mechanical pump that is camshaft driven to pressurize the fuel rail.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
-
- 10+ Years
- Posts: 908
- Joined: Sat Feb 15, 2003 7:20 am
- Zip Code: 00000
- Contact:
Re: Electric fuel pumps
outdoors4evr wrote:
Your issue may very well be a failing fuel pump, but the cause of the failure needs to be found. Low fuel pressure on the fuel rail will cause an engine to run lean. The O2 sensors will sense the lean condition and ask for more fuel causing the pump to work harder. The low fuel pressure may be due to a plugged fuel filter…
Yes I agree one of the first things to look at is fuel pressure and fuel flow.
Other things that could cause a lean condition is check for high concentration of alcohol in the fuel, (alcohol will make an engine run lean) vacuum leaks ect….
If anyone is interested….This is a problem I had on a Truck I bought with a fuel pump problem that made me lose some of what little hair I have left.
Re: Cars Today Are Smarter Than Me
by JackF » September 7th, 2012, 7:10 am
http://www.farmallcub.com/phpBB2/viewtopic.php?f=4&t=73375
- Bus Driver
- 10+ Years
- Posts: 2917
- Joined: Sat Feb 11, 2006 5:26 pm
- Location: NC
Re: Electric fuel pumps
Replaced the fuel pump relay and have driven the car on a few errands about 25 miles total with no problems. Did not run it up to the rev limiter. As far as I know, only the franchised dealer has equipment to check the fuel pressure on this car under all operating conditions. Minimum of about $150.00 for that. The previous run-on of the pump after the switch was off makes the relay suspect in my mind. Could the car start and run for a couple of seconds if the relay failed to pull in and run the pump? Could the relay stick in both contacts closed and contacts open positions?
Luck favors those who are prepared
-
- 10+ Years
- Posts: 908
- Joined: Sat Feb 15, 2003 7:20 am
- Zip Code: 00000
- Contact:
Re: Electric fuel pumps
I don’t know Nissans, but the engine will not run unless the relay activates the fuel pump.Bus Driver:-Could the car start and run for a couple of seconds if the relay failed to pull in and run the pump?
Mechanical relays I guess can fail many ways. Usually from the points arcing (opening and closing) will cause a deposit on the points tip in most cases to cause the points to stick close.Could the relay stick in both contacts closed and contacts open positions?
Try taking the cover off the old relay and look at the “pull in points’ tips.
Return to “Other Tractors and Machinery”
Who is online
Users browsing this forum: No registered users and 7 guests