I just bought an 89 century custom coupe it has had it's fuel pump & filter changed before I got it. The problem is a gas smell after I run it for a while and shut it off. their is no gas smell when its been sitting for awhile.
I have checked the clamps on the filler tube and they needed to be tightened did that. but still has the gas smell. What's causing this ?
yesterday my 89 century's speedometer stopped working. check engine light stays on. able to drive it yet but feels like it's in a lower gear. has no get up and go. Tranny has been slipping from 2nd to 3rd for a while. I think it might be the speedometer sensor. if it is the sensor will I get some power back?
View 1 RepliesI have the GM shop manual and I have gone through the flow chart for an engine which cranks but does not start. I have confirmed that there is fuel pressure and spark, but the injectors do not fire when cranking. I have gotten to the final troubleshooting step of disconnecting the crank angle sensor connector, jumping A and B terminals on the connector, and momentarily grounding the jumper with a test light. The injectors fire as confirmed using the GM injector test light (in place of an injector). The flow chart conclusion is that the crank angle sensor is bad or misadjusted or the connector is making a bad connection. I have replaced the sensor twice and adjusted it using the GM adjustment tool. The connector terminals appear clean and undamaged. 1989 Buick Century 3.3 liter ...
View 5 RepliesI have 89 buick Century custom cpe had it out on the highway last night and the Batt light started to flash intermittently. after a little while it calmed down. Had it out running around today and no problem. what should I check besides the battery terminals?
View 4 RepliesSo after taking my car to the stealership to get defective door seals fixed, I start driving home and I realize the front tire is flat. After changing to the awesome 17" spare, I decide to get gas. After filling the car up, it started for a few seconds running real rough and then shut off. I tried restarting it multiple times for about 10 minutes and the car kept turning over, but no start. I finally just shut it completely off for five minutes and it restarted, but is running roughly with the CEL light on and another green light, EPL, or something like that. I was able to drive home, but the check engine light is on still and runs like crap.....Back to the dealership in the morning. What this could be? I noticed lately sometimes when I push the gas hard it kinds of bogs down for a sec before accelerating. I had them check this and they said nothing looked wrong when they tested it. Fuel pump maybe?
View 13 RepliesI have a 1989 GMC suburban V8 350 5.7l that will not start. I have replace the following fuel pump and sending unit, fuel pump relay, ECM computer brand new, new fuel filter. When I go to start it the fuel injectors dont spray fuel into the combustion chambers verified fuel injectors still work by bypassing them and they spray fuel. Fuse's are not blown. I have been told the oil pressure switch might be bad but I'm at my end of sanity on this.
Additional Details : Tried spraying fuel into the throttle body and still no fire, ignition module and ignition coil where replaced 15,000miles ago.
for the past week we have been trying to figure out what is wrong with our truck. We recently bought it and it ran fine. Then got in a minor accident just a fender bender and it started acting up so I got towed to garage. First it would run when cold, but when hot fuel pressure would drop to 28 psi.
So I put new fuel pump, it started but still did the same thing hot 28 psi fuel pressure shuts off. So I put regulator on it, then had 0 fuel pressure won't even start. So got a another regulator thinking I got a bad one, still 0. Checked relay, there fine. I'm gonna check lines and see where fuel stops at but everything is new on it.
Finally got to the 89 bronco's ac. Whole system was replaced 3 years ago and converted to 134a about 3 summers ago. Wasn't working this year so I put gauges on and got low pressures, as soon as I put a can of 134a on, low side pressures shot up well over 100, compressor would pump for a second or two, the low side would hike up, then compressor would shut off and low side would come down to about 70-100. High side when pump engaged would be 150-200 then drop below 100 when disengaged. I checked the orifice tube, there was a bit of sediment, not black, more greyish. Flushed air and solvent through the low line from condenser to orifice tube, then backflushed the evaporator and blew it out well. No blockages or dirt. Replaced the accumulator and orifice tube, pulled a vacuum for several hours, then tried to refill, same thing, it wouldn't even take a 12oz can before pressures on low side would shoot up. Think it is the compressor or the suction lines blocked?
View 14 RepliesI am a newbie as far as fuel injection. The original issue the truck had was no fuel. I tracked down the issues to a blown fuel pump relay and a melted inertia switch. I jumped the inertia wires with a new fuel pump relay installed and the truck ran at an idle and up to 3500 RPM when stationary. If the truck is going up a grade or needs more throttle it will start to lose fuel pressure and end up stalling. I had the fuel pressure gauge connected to the schrader valve on the fuel rail and had 30-35 PSI when idling. It runs good under light load on the throttle.
Under heavy load it starts to drop quickly and if you back off the throttle it will stay running some times. I changed the fuel filter and also replaced the high pressure pump on the main frame and it still has the same problems.The original pump was pumping about 13 ounces of fuel in the 20 second test that the repair manual suggested. I have even placed a jumper wire direct to the new fuel pump to bypass original wiring and possible problems. When it stalls under load (No Fuel pressure) at the schrader valve you can hear the fuel pump running but there is no fuel pressure.
If I turn off the ignition for a few minutes and then turn the key back to the on position it will start to pressurize and then start and run at an idle. I even replace the ignition switch as it was a little temperamental. I have not changed or checked the fuel pressure regulator as it is a pain to get to at the back of the engine. I do not want to spend a fortune tracking down this problem since the truck may not even pass its smog inspection and may be a parts truck only.
67 F-250 4x4
73 Crew 4x2 (4x4 Soon)
89 F-250 Super Cab 4x4
I have a 2001 Buick Century, ~120,000 miles that a couple months ago started smelling like gas or exhaust+gas when the heat was turned on. I've changed the cabin air filter. I don't know how much that could have ever worked. I couldn't find a gas leak in the engine compartment, but I didn't give it a really close inspection. Where should I check for the most likely leak? Or could it be more of a problem with the cabin air intake?
View 11 RepliesI had this problem a few times in the past. Sometimes my 1992 Buick Century will shut off for no apparent reason while idling. When I restart it, the engine will race for a few seconds before slowing down to normal idle speed. Could this be caused by a glitch in the car's computer?
View 5 RepliesI own a 2001 Buick Century Limited that has 208k miles on it. A couple days ago I started the car up at a friends house and noticed that it had a loud rough idle and that the check engine light came on. When I drove the car home, the CEL would flash when I accelerated and I could smell something burning. When I released the gas pedal and coasted, the flashing CEL would return back to a solid state but I could still smell the burning. When I would accelerate, the CEL would start to flash again. Whenever I was stopped at a stop sign, the flashing CEL would again be solid and there would be a loud rough idle along with the same burning smell. Am I looking at an engine replacement or an easy fix? One problem or could it be multiple problems?
View 9 RepliesI have an '89 Pontiac Bonneville that has a new fuel pump and filter, computer, starter, ignition, battery and oxygen sensor! Our car will crank up, but then shut off and lose all power within 30 secs. What could be wrong?The ignition still won't work. I was told that it may be the anti-theft. Does this car have one? If so, where is it?What else could be wrong with the car? We are having a very hard time!!!!!
View 2 RepliesI am having a very tricky problem with my Buick.
For approximately the last 4 months, it has been (at least according to the heat gauge on the dash) running pretty hot. Not overheating, but getting close. And it doesn't take long for it to get there. This all seems to have begun right around the time that my father and I flushed the coolant system.
Since then, I have replaced some parts, and learned a few things in the process.
I learned that there are bleeder screws which can be opened to let air bubbles out. And I have heard that the 3.1L is especially susceptible to them.
New parts which I have installed:
- thermostat
- coolant temperature sensor
- radiator cap
- upper radiator hose
- lower radiator hose
I have checked the water pump and it seems to be perfectly fine. No leaks. No signs of bad bearings. And it circulates coolant just fine. I have not been witness to either cooling fan, primary or auxiliary, switching on in a while.
The exact symptoms are these:
The heat gauge does not take long to get to mid-way point, but will sit at that point for a bit if the vehicle remains stationary. Once the vehicle is in significant motion, the heat gauge will climb fairly quickly, especially with moderately high RPMs. It WON'T touch the red though, but will get very very close to it. The car runs fine. It does seem to be a bit underpowered, but I am comparing it to my fiance's 1996 Olds Cutlass Ciera, which I believe has a different transmission. My Buick does not seem to have lost power since this problem arose. The cooling fans no longer kick on. The oil appears fine. The coolant as well. With the radiator cap off, coolant does not bubble out or shoot out.
I made sure after changing upper and lower hoses to fill the radiator, let the car run long enough for the thermostat to open, and then slowly poured more coolant into the radiator until it was full again. And the reservoir is at proper level and the the reservoir hose s not clogged.
I am not SURE, but I don't believe the radiator is clogged. I believe that covers it, at least as well as I can.
BTW, I do not know where the fan relays are, otherwise I would test the fans to see if they still work.
What the heck is up with my Buick? Also, it has 97,xxx miles on it, and the transmission fluid is at proper level and looks normal.
Aero, 3.0 Shorty 1989
put a new radiator in my truck, as the original one finally had a small crack.. (I've kept it, since it is brass or copper!)
I put a new 192 T-stat in there too, (OEM temp)
but, now it seems that the van is running hotter than it did before!
when I had the original rad in there, it would never get above the R in the Normal word... now it runs at about M (high middle)
Also, when I tryed to burp it, I'd top it off, but then it would put the extra in the overflow tank, and only stays full up to the very bottom of the filler neck.
this is a plastic radiator... is that what the difference is?
I used to be able to top off the old tank, and it would be right at the top whenever I opened the cap... not so with this one>?
wondering if I should go down to like a 180 degree t-stat? gauge still stays normal - but if it's correct, it's about 50 degress difference.
I have a 1989 toyota Celica ST with a 2.0 in it.
I have idle problems after the car has ran for about 1.5- 2 hours. It has a new cap and wires and plugs and a new intake on it and it still does it. I have it parked for winter right now because it cant get around in the ND winters so i'm just trying to get some ideas right now.
Also i pulled the cap off and there was oil in it.
I have a 89 Mercedes 190e. The car stays running and will drive but after so long starts acting like it's starving for fuel. I have spark and nothing wrong with fuel filter but when tested there was no pressure what's odd is the fuel pump was tested and it works fine all the lines have been cleared I'm stumped what else can I check...
View 13 RepliesMy dad has a 2001 Century that started out shifting hard, like when you'd go from reverse to drive it would jump. He ignored it. It started slipping and not wanting to go up hill. It began to leak fluid. Got the lines replaced, he was driving home and said he had to put it in 3rd to make it go because it quit moving in drive.
View 3 RepliesI have a 1994 Buick Century Wagon with a 3100 SFI V6 engine that I can't get to fire at all. I have read many posts with the same problem but haven't been able to find a follow up fix from them. My Buick just wouldn't start one day after running fine before. I came to this site and tried some of the suggested troubleshooting and found, while testing for power to fuel pump, that if I jumped from the battery to the gray wire on the fuel pump relay the car would start and run fine. So that rules out any fuel pump problems or fuel filter problems. I then swapped fuel pump relay to a different similar relay on the car and still wouldn't start. I have read on this site about the oil pressure/ fuel pressure switch being a possible cause and I believe I have found that switch. It is in the side of the block toward the front of car and has three wires, (orange, tan and gray) going into it.
I was going to try to jumper the orange to gray but didn't want to do the wrong jump in case of negatively effecting the EMC controller, usually green/white wire? I also heard of the crank shaft sensor located on the back side of block but am not sure of which of three sensors I'm seeing back there to test. I guess first I'm looking for proper jumping procedure. I tried jumping the gray to orange in the fuel pump relay but no good. I get 12 volts at that orange and for a couple of seconds 2 to 3 volts at the green/white wires at the fuel pump relay when ignition is turned on, so when I jump the orange to gray at the relay it should start as it does when I jumper from battery to gray. I had relay apart when I jumpered the orange to gray, do I have to jumper with relay together and use a pin/needle wire jumper so rest of relay wires are connected? The same would apply for jumper testing oil pressure switch and crank shaft sensor? If it's not the switch or sensor then it looks to maybe be the EMC?
Recently, my car has started to run rough with the check engine light on. I cycled the key 3 times and checked for codes. I got a code for the MAP sensor and a code for the 02 sensor. I got no codes for a misfire, so I guess the plugs and wires are okay. I bought a new MOPAR Map sensor and installed it. It still runs the same and the check engine light is still on.. My question is, is it necessary to disconnect the negative on the battery when doing this and for how long? I did disconnect it for about 2 minutes and it still was the same.
View 7 Replies1994 Buick Century 3.1
Fuel pump relay is not powering the fuel pump. I was able at one point to jump the orange wire to the gray wire but it will not even do that now. I know the fuel pump works because I can jump from the battery to the gray wire and it will turn on.
I used a multimeter and tested the volts from the orange wire on the relay to the neg post on the battery and it is only reading about 1.3 volts. Is this normal?
Checked the fuel pump 15a fuse and it is ok. I am getting spark. Could it be the crank sensor? How can I test that? (It is above the start I believe). Could it be the ignition control module? How to test? Location? What else can I test with the multimeter and post back with the results to further diagnose?