Thanks for the helpful video. My pressure regulator went out...at 260,000 miles. It was getting harder to start in the cold and when I pulled the vacuum line off of the top, gas poured out of that hose.
On page 6-62 of the Buick Century Owners Manual map of Underhood Electrical Center on the passenger side - the Relay that you pulled was in position number 35. This shows to be a MINI-RELAY labeled in the book as Fuel Pump. There also shows a Micro Relay which is in position number 19 labeled in the book as Fuel Pump as well. Should both be removed to release the fuel pressure or just the Mini-Relay pin in the numbered 35 position?
Gosh, should be starting then... Hrm, that's a tough one. You are fuel injected? I don't know when they switched to the distributor... What exactly does it do when you turn the ignition to start? Does it sputter? Try to start? Does the starter click or does flywheel / motor spin?
I’m having the same issue! Did you ever figure out what the problem was?! My car won’t start I have fuel and spark -my engine won’t start when I turn the key it makes a little click sound but doesn’t start!
I have a 1991 Buick Century with a 3.3 liter V6 engine and I am having problems with finding the scharder valve on my car. My car acts like it running out of gas and I’m figuring this will let me know what is going on with the fuel system in it. Can you tell me where it is because it’s not in the same spot as the car shown in this video? Thanks!!
I cannot speak specifics of your car, however, if it's multiport fuel injection (more than one injector), it will be on the fuel rail. Find an injector, above it will be a metal pipe / rail. Trace that rail / map it out. The valve will be on the rail, likely opposite side of where fuel lines plug into the rail. Good luck!
Great question, I am not sure, you can quickly tell if the fuel pump is accessible in the trunk by (1) feeling the trunk liner, do you feel any bolts around the same section as in this video? (2) pull back the trunk liner and take a look, you have to remove your spare tire to do this but is quite easy procedure. Best of luck with your repair.
Unsure, I don't know they it has one? I wrecked an my 1999 and it started right up. But then again I didn't roll it. I've had three centuries in total. Now I have a Lucerne.
I have the same car. I’m trying to figure out if my fuel pump is out or if it’s just the pressure sensor on the fuel pump is bad. My fuel rail reading -1.6 on the short fuel line and -28.9 on the Long fuel line 🤦🏾♂️🤔
what are symptoms? Does it start hard? What if you cycle the pump a few times (turn key to on but not start two or three times) does it start better then? Also not sure if I got into this in the video... Do you have any vacuum leaks? Is your pressure regulator still connected to the intake manifold w/ the little vacuum hose?z Hopefully that helps. I don't recall the pressure spec for that vehicle off the top of my head anymore. Sold it a few years back.
@@matthewjeschke I’m having a high idle sounds and when I put it in drive it takes off fast and when I put the car in park it the sounds gets louder. But if I cut the car off and cut it back on sometimes it would stop. I’m spending more gas then usual. I don’t have a vacuum leak no where and no check engine light.
@@screwedupdranksippamaybe it's an idle air control issue? Is your IAC stuck? It's a little stepper motor is on side of the throttle body. It's somewhat common for them to get sticky and stay open. This will cause the engine to rev / idle high up when you let off the gas.
@@screwedupdranksippa I am terrible about checking my comments on here. If you have any further questions feel free to contact me through www.keystoaz.com/contact-us/
My 1998 Buick Century does not seem to display the correct fuel level on the dashboard. I replaced the fuel pump, but the fuel level indicator still seems to give incorrect readings. Do you happen to know if this has something to do with the fuel pump relay?
+djwhut98 great question. It could be the fuel level float was damaged in the installation... or a poor connection with the connector to the pump. It's a bit of a tricky one to solve. Whenever I do a pump I try to assemble as little as possible and test along the way for this reason.
My pump works but on the gas gauge it moves when I drive it doesn't tell me the right amount of gas that I have in a tank what should I do for a easy fix
My 95 regal with the 3800 goes up to 40 really fast and then drops down to 10 really quick - it wont crank so im just turning the key on to engage the pump- is this the regulator or pump you think? Thanks for this video! and any wisdom!
+Angel Scene (XxAnGeLScEnExX) really that's interesting... I've not done that before. My corvette has like a steel braided line. What was the advantage?
Hey Matthew, my Century is older, a 1996, and it does not have a fuse/relay center under the hood. I cannot seem to find it. Might you know where it is located on that year? Thanks in advance. Michael
+Michael H White good question, it's hard to say, check on the ends of the dash where the door meets it. There's an internal fuse box there on most cars. I have seen fuse boxes under the dash as well. Some even under the knee bluster on the driver side or under the back seat. I would actually do an internet search if you cannot see it. Sometimes they are a bit hidden and require removing a panel or two.
you said you where gonna go o er some of the symptoms at beginning of video then you strayed off into everything else repeating the same things and not once did you even mention the symptoms
Your car will start hard... It may also seem to lack power / hesitate when you accelerate. Your gas mileage will suffer... As it gets worse the car will idle very poorly... and or may not start at all. Hope that helps.
It is actually very common on a 3.1 liter engine... pretty much a design problem at the factory. Also look at the upper intake gaskets... much easier to replace.
You want to do a pressure test on your fuel rail. You can rent the tool for free at most parts stores. There is a schrader valve (like on your car tire) that the gauge attaches to. If you read low fuel pressure (or yours sounds like virtually no pressure) then there's a bad pump or clogged pressure regulator. That hopefully would narrow down the parts you need. Ask your parts store which they suggest.. or possibly just change both. FYI ~ I run fuel system cleaner, seafoam, through my car every oil change. It seems to make this stuff last longer. If your car is very old, say 250,000+ miles you may like to consider dropping the tank and cleaning it out. Dirt gets in there and can clog the pump, filters, etc in the fuel system.
Thanks for the helpful video. My pressure regulator went out...at 260,000 miles. It was getting harder to start in the cold and when I pulled the vacuum line off of the top, gas poured out of that hose.
I have a 90s Pontiac/ASC mclaren, and this video helped a lot with my problems
awesome glad to hear it!
Where the pressure regulator located, there’s a vacuum line right above it. Where does that line exit to??
Sorry I don't check comments often. The pressure regulator vacuum line should go to the intake manifold.
On page 6-62 of the Buick Century Owners Manual map of Underhood Electrical Center on the passenger side - the Relay that you pulled was in position number 35.
This shows to be a MINI-RELAY labeled in the book as Fuel Pump.
There also shows a Micro Relay which is in position number 19 labeled in the book as Fuel Pump as well.
Should both be removed to release the fuel pressure or just the Mini-Relay pin in the numbered 35 position?
The relay you pulled (35) looks like the 15 amp blue fuse type one. the other (19) is a larger box style relay.
Where would the canister purge valve be on this car? My daughter had this exact car.
Got the same car .got fuel and spark , engine turns over but won't start ?
Gosh, should be starting then... Hrm, that's a tough one. You are fuel injected? I don't know when they switched to the distributor... What exactly does it do when you turn the ignition to start? Does it sputter? Try to start? Does the starter click or does flywheel / motor spin?
I’m having the same issue! Did you ever figure out what the problem was?! My car won’t start I have fuel and spark -my engine won’t start when I turn the key it makes a little click sound but doesn’t start!
I have a 1991 Buick Century with a 3.3 liter V6 engine and I am having problems with finding the scharder valve on my car. My car acts like it running out of gas and I’m figuring this will let me know what is going on with the fuel system in it. Can you tell me where it is because it’s not in the same spot as the car shown in this video? Thanks!!
I cannot speak specifics of your car, however, if it's multiport fuel injection (more than one injector), it will be on the fuel rail. Find an injector, above it will be a metal pipe / rail. Trace that rail / map it out. The valve will be on the rail, likely opposite side of where fuel lines plug into the rail. Good luck!
On my 1999 Buick century, pro demand/Mitchell states 41-47 psi is the fuel pressure Key on engine off.
Thanks for sharing!
I have a 1999 3.8 Chevy Lumina LTZ sedan. Can you access the fuel pump through the trunk or do I need to drop the tank? Thanks!
Great question, I am not sure, you can quickly tell if the fuel pump is accessible in the trunk by (1) feeling the trunk liner, do you feel any bolts around the same section as in this video? (2) pull back the trunk liner and take a look, you have to remove your spare tire to do this but is quite easy procedure. Best of luck with your repair.
Jeff Rodiguez buy a auto manual from advance it will help you understand the whole car
Where is the fuel shut off switch located on a 99 century
Unsure, I don't know they it has one? I wrecked an my 1999 and it started right up. But then again I didn't roll it. I've had three centuries in total. Now I have a Lucerne.
hey i have a 95 buick century, and i crank it up..it runs for 30-50 seconds then it completely dies out... what do i do?
I have the same car. I’m trying to figure out if my fuel pump is out or if it’s just the pressure sensor on the fuel pump is bad. My fuel rail reading -1.6 on the short fuel line and -28.9 on the Long fuel line 🤦🏾♂️🤔
what are symptoms? Does it start hard? What if you cycle the pump a few times (turn key to on but not start two or three times) does it start better then?
Also not sure if I got into this in the video... Do you have any vacuum leaks? Is your pressure regulator still connected to the intake manifold w/ the little vacuum hose?z
Hopefully that helps. I don't recall the pressure spec for that vehicle off the top of my head anymore. Sold it a few years back.
@@matthewjeschke I’m having a high idle sounds and when I put it in drive it takes off fast and when I put the car in park it the sounds gets louder. But if I cut the car off and cut it back on sometimes it would stop. I’m spending more gas then usual. I don’t have a vacuum leak no where and no check engine light.
@@screwedupdranksippamaybe it's an idle air control issue? Is your IAC stuck? It's a little stepper motor is on side of the throttle body. It's somewhat common for them to get sticky and stay open. This will cause the engine to rev / idle high up when you let off the gas.
Ok ima check that. I appreciate the help
@@screwedupdranksippa I am terrible about checking my comments on here. If you have any further questions feel free to contact me through www.keystoaz.com/contact-us/
My 1998 Buick Century does not seem to display the correct fuel level on the dashboard. I replaced the fuel pump, but the fuel level indicator still seems to give incorrect readings. Do you happen to know if this has something to do with the fuel pump relay?
+djwhut98 great question. It could be the fuel level float was damaged in the installation... or a poor connection with the connector to the pump. It's a bit of a tricky one to solve. Whenever I do a pump I try to assemble as little as possible and test along the way for this reason.
My pump works but on the gas gauge it moves when I drive it doesn't tell me the right amount of gas that I have in a tank what should I do for a easy fix
Change the sending unit. It can be bought separately
My 95 regal with the 3800 goes up to 40 really fast and then drops down to 10 really quick - it wont crank so im just turning the key on to engage the pump- is this the regulator or pump you think? Thanks for this video! and any wisdom!
i have a no crank condition ...wheres the fusable link from the starter and also whats the fuse amp size for ignition and crank fuses
I have a 1993 Buick regal 3100 it keeps cutting off at operating temp fuel psi 41 at start 35 with engine on
I converted my pvc fuel lines to rubber fuel line.... best upgrade
+Angel Scene (XxAnGeLScEnExX) really that's interesting... I've not done that before. My corvette has like a steel braided line. What was the advantage?
Hey Matthew, my Century is older, a 1996, and it does not have a fuse/relay center under the hood. I cannot seem to find it. Might you know where it is located on that year? Thanks in advance. Michael
+Michael H White good question, it's hard to say, check on the ends of the dash where the door meets it. There's an internal fuse box there on most cars. I have seen fuse boxes under the dash as well. Some even under the knee bluster on the driver side or under the back seat. I would actually do an internet search if you cannot see it. Sometimes they are a bit hidden and require removing a panel or two.
would u happen to know how to change the cooling fan relay on a 94 Buick Century!!??
It's in the under hood junction box.
How can i find out.if you may.
I guess its histery.got to get a new one.sorry for ask.your help to was plv.
buenos dias me podria esplicar como canvio los enpakes de cabesa del centuri buik 3.8 grasias
This is merika speak English
@@allalonerp don’t be a douche bag not everyone on TH-cam is from the USA
you said you where gonna go o er some of the symptoms at beginning of video then you strayed off into everything else repeating the same things and not once did you even mention the symptoms
Your car will start hard... It may also seem to lack power / hesitate when you accelerate. Your gas mileage will suffer... As it gets worse the car will idle very poorly... and or may not start at all. Hope that helps.
My 1998 buick cantry .the oil is cremy i think ita a head gascet.why would the headgascet bloe out
It is actually very common on a 3.1 liter engine... pretty much a design problem at the factory. Also look at the upper intake gaskets... much easier to replace.
My 3100 will kick kick it seems like it’s not sparking
is it a low battery?
I was going to just swap out my fuel pump. Idk if I should
Like when driving it has slow slow pick up when accelerator is put all the way down it just bogs out.
Can you lead me,if you may
?
Great video!
Thanks glad I could help out!
Where the pressure regulator located, there’s a vacuum line right above it. Where does that line exit to??
I couldn't say exactly... But most likely it goes back to the intake manifold somewhere. I don't have the vehicle anymore.
Thanks bro!!
@@nickjuarez3381 My pleasure :) Thanks for liking my tutorial.
hey i have a 95 buick century, and i crank it up..it runs for 30-50 seconds then it completely dies out... what do i do? plz help
hey i have a 95 buick century, and i crank it up..it runs for 30-50 seconds then it completely dies out... what do i do?
hey i have a 95 buick century, and i crank it up..it runs for 30-50 seconds then it completely dies out... what do i do?
You want to do a pressure test on your fuel rail. You can rent the tool for free at most parts stores. There is a schrader valve (like on your car tire) that the gauge attaches to. If you read low fuel pressure (or yours sounds like virtually no pressure) then there's a bad pump or clogged pressure regulator. That hopefully would narrow down the parts you need. Ask your parts store which they suggest.. or possibly just change both. FYI ~ I run fuel system cleaner, seafoam, through my car every oil change. It seems to make this stuff last longer. If your car is very old, say 250,000+ miles you may like to consider dropping the tank and cleaning it out. Dirt gets in there and can clog the pump, filters, etc in the fuel system.