Buick - Regal :: 1993 - Intermittent Hard Start / Idles Roughly
Apr 9, 2014
1993 Buick Regal 3.1l V6 Multiport injection
Problem: The care currently has a hard start, and a fluctuating idle. I bought the car a year and a half ago it still has low miles about 94,000. The care used to start fine but had a fluctuating idle in the range of 750 to 2500 rpm. My brother who is a mechanic and doesn’t live near, do all the gaskets when he visited. Then the idle fluctuation dropped to 750 to 1000rpm, when the car rpms fluctuate there is a whirring sound I can hear from the cab, like a pump or pull system. On occasion there is a vibration as well but it is inconstant and irregular. Fuel pressure seems to fluctuate as well. If the car will not start I give it a little gas and it will run fine after a minute or two, but then the idle starts to fluctuate.
No fuse issues I can tell and relays seem to be fine.Checked for lose wiring connections found, none. I have replaced:
- Hoses and gaskets
- Starter motor
- Battery
- Fuel Pressure regulator
- Fuel Filter
- Spark plugs and wires
- TPS
- Idle Air control Valve
- Crank shaft sensor
- PCV.
Right now I’m thinking it could be the fuel pump (a nightmare to change on this car), a fuel injector failing, and the ignition switch.
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I have a 96 Buick regal v6 3.8L. It ran good. Started from last winter, it started to act up. In the morning, 98% OF the first attempt to start the car failed: it started but died in a few seconds, but the 2nd attempt always got it start. One month ago, I drove it for 1.5 hours, and parked there for 15 minutes, could not get it started, opened up the hood, waited for 15 minutes, it started. Then I drove it to a auto shop, they replaced the starter. One five days later, I could not started it again after 1.3 hour driving and parked for 20 minutes. Wait for 15 minutes, it started again. The odd is that when it refused to start, the radiator gap is very hard (but not over heated yet), after started it and drove for 30 minutes or so, I feel the gap is cooler than when it would not start.
I drove it back to the shop, they could not any problem. Drove it back. three day later, it stalled when driving. I didn't realize the stall until I need to turn: lost steering and brake power, then notice that the whole dash board doesn't have any light on. Since the car shut it off only after half mile driving, it doesn't looks like heat related (It was on the mountain, it was about 70 F). Then I sent the car to a different shop.
At the shop, they took off the ignition model and tested it good, and put it back. Since then, they started the car several times per day. Finally, on one day, the car shut itself off after running for 2 hours, and they could not start it. However, they checked and didn't find any code was set (they said because service engine light was not on). The shop have been trying to start the car several times per day for 10 days they didn't have another failure. I am not sure what to do with the car. I read posts here, and have the shop checked short circuit, ground fault, fuel wiring harness, catalytic converter, they didn't find anything, and they said that fuel pump seems ok.
I plan to replace crank sensor, fuel filter, and fuel regulator sensor and use the car for work commute (2 miles). what should be done on the car (since it is old car with 120K on it, I don't want to spend more than $500 dollar on it unless I am sure the problem can be fixed).
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I have a 1999 F150 4x4 5.4, I pulled the heads due to blown head gasket. Prior to pulling heads truck started and run fine other than miss on #1 cylinder. I timed the engine according to Haynes manual and posts on this site. Truck is now hard to start and idles very rough. I does seem to smooth out when reving the engine and seems to have plenty of power. Cant find any vacuum leaks or unplugged wires.
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My son is about to purchase his first car. A 98 Buick Park Regal. Feels like it idles rough, and has a little hang-up when it shifts. Seller claims it's due to needing a transmission mount replaced. Does this sound viable?
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1991 Regal, 3800 v6.
So here's an interesting observation. When i turn the ignition to ON, I hear no sound nor feel any vibration from the fuel pump. Is there any scenario where a fuel pump fails to prime yet kicks into gear after a start? So, I've got rough idles and misfires on cold starts. Before I start replacing parts my diagnostic plans is as follows:
Remove and inspect spark plugs.
Inspect and test starter coil/distributor (still have to research how to do this)
Test resistance on fuel injectors.
Test pressure drop on fuel rails.
Test compression for possible small head leak.
I'm wondering, if I do have a tiny head leak that is letting in a drip or two of coolant after hours of the engine sitting, will I be able to see this on the gauge doing a compression test? I've never done one before and still need to buy a gauge, but maybe I'm better off just doing the other tests and if they all check out I can be certain it is a minor head leak.
My assumption is that I have a leaking injector; just trying to do things the proper way.
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I have a 1993 Regal Custom. The friction pads on the transverse spring had worn off. I replaced with the aftermarket isolator pads. These work well. The problem I am having is that after a few months they tend to shoot out. You will hear a large bang and then see the pad shoot out in the rear view mirror. This seems to happen when their is a load in the rear of the car. What can be done to prevent this.
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190000 miles... Driving on the highway my car began to vibrate and lose speed. I had to shift out of overdrive before I could get the car to respond again. It continued to feel incredibly impeded. I could not push the car over 65mph and couldn't remain at speed going uphill. From a dead stop, the car accelerates incredibly slow in any gear. The engine feels impeded even in P and N almost like the trans does not disengage.
The trans will downshift and kick up RPM when the pedal is put to the floor like normal. What could be causing the trouble and how much it could cost to have repaired? I have checked the trans fluid in park at op temp and it's perfect. No fluid is leaking from the car. Car feels like it's in drive and I'm holding the brakes while hitting the gas... even in P and N so I don't think it could be brakes.
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I have the strangest problem on my 2006 Audi A6: whenever I fill up my tank with gas the car has a very hard time starting. This has happened 3 times in a row now. I run the tank fairly low - to about 1 quarter tank or a little lower but never to empty....then I fill the tank. When I get in the car to start it, the engine just keeps turning over trying to start but will not start. Then I stop trying, let the ignition rest for a bit, and try to start it about 5 minutes later and it starts just fine on the first try.
What could be causing this?One thing that has also started happening around the same time as the problem above is that when I'm idling at a stop light, I notice the car may start to idle roughly and seem like it is about to die out. I am the first and only owner of this car...I take good care of it and am an easy going driver. But I do drive a lot and have about 200,000 miles on it after 7 years.
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its 1986 Ranger with a 2.9L V6 Auto 4x4, well to start with it seriously over fueling also it idles very roughly and even stalls out sometimes, when I'm trying to hold it at a speed it acts like it is missing (I guess that's from over fueling as well and it also pukes out lots of black smoke, it goes through way too much gas for a V6), but when I speed up fairly hard it acts fine until I try to maintain speed again, I have already put a tune up into it and a new EGR as well a fuel regulator and how to fix it?
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1995 Buick Regal, 128k miles, 3.8L V-6.Problem: When running errands around town, car will temporarily not start after 3rd or 4th stop. Vehicle cranks, has spark, has fuel pressure at fuel manifold. No codes on computer (Wish it was a '96). Car will start normally after cooling off (generally takes at least 45 minutes). No problem driving to work, parking all day, driving home. Have not tried long distance driving since problem arose, due to concern about being stuck for awhile far from home. Have determined at EGR valve is NOT a part of problem.
Sample situation: Drove 5 miles to town. Shopped for 15 minutes. Drove 2 miles further with 5 minute stop. Drove another 2 miles with 5 minute stop. Drove 1 more mile and stopped for 30-40 minutes. Car would not start. Cranks strongly, has spark and fuel pressure (don't know if fuel getting to injectors). Still would not start 30 minutes later. Left car for several hours. Started promptly and ran normally on return. Weather conditions - 90 F, low humidity. Problem has been occurring for several months. No computer codes to dive guidance.
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My 1992 buick regal 3.8l initially cranked fine but did not start. I went to crank again and starter turned very slowly and finally just clicked got new battery and still same slow finally jumped it and got it to somehow start took it to shop they went to replace starter and told me that a weight had fallen off my flywheel/flexplate and lodged in starter so i agreed to let them replace flywheel starter 2 days later still in shop does this sound reasonable?
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1991 Buick Regal, 3800 V6
As the title says, when I start the engine cold I get a slight puttering and drop in RPMs followed by the engine revving itself to about 1100 for a few seconds and then normalizing at 600. It has only actually stalled out a few times. This does not happen once the engine is near operating temperature.
Now, I did not notice this issue prior to doing some maintenance on the vehicle (radiator replacement and transmission service) and I've read that this can be caused by a faulty coolant sensor. Possible?
Battery is new.
Also, when I say cold start I mean summer temps here in Michigan. So it's happening anywhere from 50 to 90 degrees F.
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Cars turns off while driving and may or may not start. The voltage fluctuates and dims the lights and such. Now it wont start.
The battery is good. The alternator is good. I put a new computer in it. I don't know what else to do.
On top of this awesomeness, I found this relay/sensor that seems to go nowhere (picture below). There is also a second something or another that you can see in the bottom right quarter (red wire grey attachment underneath cruise control module next to that bundle of wires) that seems to go nowhere. I didn't unplug these.
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2001 Buick regal started and ran left town for 10 days came back cranks but wont start I don't here fuel pump engage when I turn on ignition...
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Thinking about picking up a 2002 Regal. Major issue: it will not start without turning the lights on first and will shut off when the wipers are turned on.
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I have a 96 buick regal thats been giving me problems for over a year now. it from time to time acted like it was out of gas even though it might have a half a tank. Turns over fine but won't start after it sits for a couple of days then it starts fine. Last summer my son replaced the fuel pump after doing a pressure test and getting a low reading. No more problems until jan then it started doing it again. Well about 3 months ago it wouldn't start so I had my wife turn the key on and I stuck my ear in the fuel fill tube and I could not hear the fuel pump.
I checked the fuel pump relay by putting my finger on top of it and I can feel it click when the key is turned on. Also the air relay next to it is the same so I switched them no change so I replaced the fuel pump again and also the sending unit so every thing in the tank is new. Car still won't start can't hear the pump running and i checked for spark no spark now. My other son has been saying he thinks its the ecm so I just put a reflashed used ecm in. Did the security relearn procedure still nothing. whats next? Somebody told me check the cam and crank sensors and wiring. I also replaced all the ignition coils last summer.
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1991 Buick Regal, 3800 V6
Having a rough idle on a cold start. After some research and closer inspection of the vehicle, I'm quite certain I have at least one leaking injector that is flooding a cylinder and causing the car to misfire on a cold start. I'm also not at the gas mileage I should be at.
So I'm wondering, is fuel injector replacement as straightforward of a job as it looks? Any major issues I could run into in doing a replacement?
I'm planning on replacing all six injectors (I can get them for $50 each buying online with a discount code), but given that the vehicle is so old am I better off just replacing the faulty ones? I'm assuming pulling the spark plugs and seeing which cylinder is wet will tell me which I need to replace.
And one more question: Is there a way to depressurize the fuel system when I park the car for the night, thus preventing fuel (or most of it) from leaking into the engine until I get this fixed? I've read that just unscrewing the gas cap can depressurize the system.
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I have a 2005 Ford Explorer 4wd with 4.0 SOHC 6 cyl Flex Fuel. For months the vehicle has idle rough and increasingly becoming difficult to start. I decicded to replace the spark plugs and wires hoping to solve this issue! gap set to 052. When I started the vehicle it went into engine fail safe mode and wrench light came on. I then replaced the TPS on the throttle body and had no diference (I may have installed incorrectly! when I put it on the armature felt like it broke free inside the sensor). DTC codes read P0223, P2106, P2110 and with P0122 pending, P0223 pdg, P2106 pdg, & 2110 pdg.
With the old tps installed and wiring harness disconnected the truck will start in fail safe mode, but will not start at all with wire harness connected. A volt meter reads at computer end of wire plug 3.69 volts at pin one (gray/red wire +) and pin three (gray/white wire -) with key to on but not running.
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So, I took my 2011 Sonata SE in for service because I was having some transmission problems (18,000 miles). After starting the car and putting it into drive or reverse, the car would make a large clunk noise and surge forward or reverse. This happened only twice. I was also periodically getting some very hard shifts. They told me that they were getting an error showing a bad temperature sensor for the transmission fluid so they had to replace it. A lot of this started after the update. We will see if that fixes the problem.
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06 F250 6.0 with only 65,xxx miles on it. This has happened twice and both times the engine was warm and had been cut off for less than 10 min.. When I tried to crank it back up it stumbled and idle roughly then cut off. After several attempts to re-crank it still would idle rough and I tried to give it fuel but no change, even with pedal fully depressed. Then it would die.
After sitting a few minutes it starts normal. Both times I didn't have my obd2 adapter for my torque pro. The last time it happened I went home and hooked it up and got no codes. Everything looked fine. What could it be, where should I start looking. Batteries are1.5 years old. Oil, oil filter, and both fuel filter changed about 1000 miles back. I have had the truck for 1.5 years and the oil has been changed twice.
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My 1993 Ford Ranger XLT w 170,000 miles has been having an issue with not starting. It cranks fine. At first (for the last year), the fuel pump didn't sound right or didn't come on at all; when normal, you hear it for three seconds or so after turning key on. I have replaced fuel pump/relay/filter. Now, in the last week, it also will not idle after initial start, and I have to rapidly pump the accelerator lest it dies again. This whole process can take ten minutes or more to get the stars in proper alignment. This morning, I had to give up and drive my other beater into town. In addition to the parts I mentioned, I also replaced the ignition switch thinking not correct voltage to pump. I finally traced wires and do indeed have 12 volts to the pump (under the bed, after the inertia switch and all harness plugs). It has a new windshield, new tires, cold old R-12 A/C, and it's paid for.
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