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I'm just looking for everyones input on acceleration. When I kick my car in from a dead stop I don't get the V8 power I would expect. I know its a heavy car but what seems to happen is that the car stays in 1st I believe. You can feel that it should shift about 2/3's through the climb but it doesn't. It seems like a very smooth endless climb to speed. Is this the way these cars are geared? I would compare my power off the line to my old 3800 V6. A respectable amount. The car still has excellent V8 passing power and will do well when downshifting from 3rd (mashing the gas). I thought it could be my throttle off but wouldn't I be able to see it in how the car runs? It idles at about 750RPM.
Your thoughts are very appreciated.
As far as the off-the-line power, if you're comparing it to a pushrod V8, you're absolutely right about it being a little slower. Today's DOHC V8's tend to have more torque/horsepower higher in the rev range than the corvette-type or older pushrod designs (BTW, the 3800 V6 you mentioned is a pushrod design so it has more low-end torque, but is not as strong at the high end, relatively speaking. We also own a Impala w/ the Series II 3800 so I know exactly what you're talking about). Having said that, the Aurora's 4.0 has generally more low-end torque that most DOHC engines, even though the max horsepower is still at higher rpms. When you go to pass at speed, the engine is probably more toward the mid-rev range and right at the power band, so you get a strong pull when passing.
The car's weight, combined with less low-end torque than what you may have experienced with a pushrod V8 does make it a little slow off the line. But once you get it to 2000-2500RPMs you ought to see the redline coming up FAST!
P.S. nice to see the board so active again. its been a while since Ive seen this much activity.
Like everyone said, the car should run to redline before shifting out of 3rd if you floor it. Not sure why you'd want it to shift into 2nd 2/3's of the way through the band. This would result in worse acceleration.
The Aurora is a big car, and the engine is pretty torquey, but the power really comes on at around 3000 rpm as was said. You really should feel that when you launch the car. Do you notice it really start to come on the boil there? Your idle speed seems right on.
Larry: Thanks for the input. I guess I am used to pushrod engines. It honestly never dawned on me. I used to love my old 3800 II. I had a 96 black buick regal. it was a rare custom beautiful car but then I started having all these fuel delivery problems and after replacing about $500 in parts I finally gave up and traded it for the Aurora...Wish i'd have kept both. Those 3800II's are impressive off the line. I just wanted to make sure my acceleration was comparable to everyone elses.
Kayaman: I'll give it a little more WOT. specifically in the 2000-3000 range.
I hate when that happens.
I'll give you one guess to tell me which is the old compressor and which is the new....
We initially thought that just the clutch was bad, but after inspecting the compressor, you could see it leaking oil all around the case...so we changed the whole thing out. It really wasn't a bad job, maybe 2 hours work. And half of that was reclaiming the old refridgerant and putting new in..not the actual install.
Oh by the way, you know how my windows weren't working? Well, we finally got to dig into it, and look what we found in the wire pack that passes through the door.
Two wires split, and a bunch more on the way. I like the big gauge wire that GM uses on this stuff, but after 10 years its gotten a bit stiff. No problem, a little extra wire and a
soldering iron and we were in business again. All in all, it was a good weekend, but thank god for the extra day!
-Brian
Thanks in advance
Greg
-Brian
Back in March, they discovered the infamous "crankshaft oil leak".
Today, they noted that my left front wheel bearing is shot (the tire definitely jiggles when it's up on the lift). Also, my stearing gear assembly is leaking. Their estimates are $450 and $850 (GMPartsDirect shows the part prices at $200 and $450, so figure the rest for markup + labor).
I think my extended warranty company (not WarrantyGold) is going to kill me, or at least my car... Henry, how much did you get out of your warranty? If they approve these (I expect the entire "send out an inspector and provide all of your service receipts" routine), I think I'm in the $4700-$4800 range, for an $1100 investment. Yikes!
--Robert
whose Aurora is scheduled to go under the knife on Monday.
I rarely set my '97's parking brake. Wnen I do and then try to release it, I sometimes have the problem you describe. I found that I could turn of the light by grabbing the parking brake pedal with my hand and pulling it back/up.
Hope this helps.
Greg
,Dan
Here's another mystery, what could this strange noise be? When the temp gauge reaches about 160, I hear 3 rapid light knocks coming from somewhere near the steering column under the hood. It's always a count of 3, never more or less. It doesn't seem to be hurting anything.
Marshall
I'm out driving today and it does it usual. Comes on after driving continuously for long periods or multiple short trips in a row. So for the annoyance factor of two lights staring at me I turn the car off and restart it to try to reset the system. Instantly my traction control fires from a dead stop with a strange buzzing sound. If you press the brake it will stop but once you let go there it is again. You can drive on it but it will stay on until you get above about 20mph. Then it would come back on after leaving an intersection. So finally I just turned it off and drove along fine but then when I got home to restart the car I realized that the traction control comes on before you even start the engine in the "ON" position. it just says "traction active" and buzzes along. I found a trick to by passing the system by holding the TC button as you start the engine. This is annoying but it works. However , it some times turns the ABS system off as well. I can still drive its just extremely annoying. Anyone have any input??
3 Questions..
I was thinking of just pulling the TC(traction control) Relay or fuse... I'm wondering what I can mess up screwing w/ relays. I'm sure pulling the fuse wouldn't do much. I can live w/o TC for awhile...psh besides what do i need something slowing me down for ;-)
Also, anyone know a ballpark for how ridiculously expensive an Electronic Brake Traction Control Module (EBTCM) is? The one thing that sucks is that I have no clue if thats even it, is it the wheel speed sensor? A bad relay? A bad module? Something else? Who knows..
Third, I was thinking about pulling off the wheels and seeing what I see. By just pulling the wheels can I run into the whole 70 mph shaking problem? Or was this problem created by changing tires and wheels only? Somehow I don't see how just removing a wheel could off balance it??
Greg
Kayaman, I heard you say that you got yours fixed for around 350. Was this with the labor and on how many wheels? Just the front? Is the problem usually in the front?
Thanks again guys. Its reassuring that the problem is a regular.
I can give you a list of tools you'll need and step-by-step instructions if you'd like.
Thanks for the help again. Its always appreciated. I thought I read before that the wheel speed sensors also affected your cruise control... Mine still works. Just wondering.
Autobahn,
Yes that would be awesome, I would be very grateful for a list tools and instructions.
Guys I just want to thank you again for all your help. Its very appreciated. I don't think I'm alone when I say these cars are awesome once you get past the common problems, but if we all didn't know these problems are common we'd probably be driving our cars through the dealers front windows ;P By the way I picked up a TSB on what could be causing our wheel speed sensors to fail. Might be worth checking into. I'll post it next.
Note: this bulletin was offered with illustrations. If you'd like the illustrations just e-mail me. I'm working on putting it all online.
(ericmf@digiclipse.com)
Here is the bulletin:
AMBER ANTILOCK BRAKE WARNING LIGHT/TRACTION STAYS ON #43-50-07 - (09/12/1994)
SUBJECT: AMBER ANTILOCK WARNING LIGHT AND (IF EQUIPPED) AMBER TRACTION OFF WARNING LIGHT STAYS ON (INSTALL JUMPER HARNESS)
MODELS: 1995 BUICK RIVIERA (BUILT BEFORE VIN 4708381) 1995 OLDSMOBILE AURORA
CONDITION:
SOME OWNERS MAY COMMENT ON AN INOPERATIVE ANTILOCK BRAKE AND (IF EQUIPPED) TRACTION CONTROL SYSTEM. AS A RESULT, THE FOLLOWING CONDITIONS WILL OCCUR:
- AMBER ANTILOCK WARNING LIGHT AND (IF EQUIPPED) AMBER TRACTION OFF WARNING LIGHT TURN(S) ON AND STAY(S) ON. THE RED BRAKE WARNING LIGHT REMAINS OFF.
- ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES MAY BE SET: 45, 51 OR NO CODE.
NOTE: THIS CONDITION DOES NOT AFFECT THE OPERATION OF THE POWER BRAKES.
CAUSE:
NORMAL OPERATION OF THE LEFT-HAND (PRIMARY) COOLANT FAN MAY CAUSE VOLTAGE SURGES WHICH DAMAGE THE ELECTRONIC BRAKE (AND TRACTION) CONTROL MODULE (EBCM/EBTCM). FAILURE OF THIS MODULE RESULTS IN AN INOPERATIVE ANTILOCK BRAKE AND (IF EQUIPPED) TRACTION CONTROL SYSTEM.
CORRECTION:
INSTALL JUMPER HARNESS, P/N 12165487, IN THE LEFT-HAND (PRIMARY) COOLANT FAN HARNESS. THIS JUMPER HARNESS CONTAINS AN INTEGRAL SURGE SUPPRESSION DIODE. REFER TO ATTACHMENT 1 FOR THE ELECTRICAL DIAGRAM OF THE FAN WITH INSTALLED JUMPER HARNESS.
INSPECTION - BUICK RIVIERA:
BEFORE INSTALLING A JUMPER HARNESS, PERFORM THE FOLLOWING INSPECTION/TEST PROCEDURE.
1. LOCATE LEFT-HAND (PRIMARY) COOLANT FAN CONNECTOR. (FOR RIVIERA, IT IS ON THE FAN).
2. EXAMINE THE LEFT-HAND COOLANT FAN HARNESS TO DETERMINE IF A JUMPER HARNESS HAS ALREADY BEEN INSTALLED. DO NOT INSTALL A NEW JUMPER HARNESS IF ONE IS ALREADY PRESENT.
3. ON SOME VEHICLES, A SURGE PROTECTION DIODE MAY HAVE BEEN PREVIOUSLY INSTALLED DURING SERVICE. IN THIS CASE, THERE IS A DIODE SPLICE IN THE MAIN BODY HARNESS NEAR THE LEFT-HAND COOLANT FAN. PERFORM STEP 4 BELOW TO CHECK FOR THE PRESENCE OF THIS DIODE. IF STEP 4 VERIFIES THE PRESENCE OF A DIODE, NO JUMPER HARNESS IS NEEDED. DO NOT INSTALL A JUMPER HARNESS.
4. TEST FOR THE PRESENCE OF A DIODE IN THE BODY HARNESS AS FOLLOWS:
A. DISCONNECT THE LEFT-HAND COOLANT FAN CONNECTOR.
B. USING A J39200 DIGITAL VOLTMETER OR EQUIVALENT, PERFORM THE FOLLOWING CHECK.
- SET THE METER TO THE DIODE SCALE. - MEASURE ACROSS THE TWO PINS ON THE BODY HARNESS SIDE OF THE LEFT-HAND COOLANT FAN CONNECTOR. CHECK ONE DIRECTION, THEN REVERSE THE LEADS AND CHECK IN THE OPPOSITE DIRECTION. - IF THE SURGE PROTECTION DIODE IS PRESENT AND GOOD, ONE DIRECTION SHOWS OVERLOAD (OL); THE OTHER DIRECTION SHOWS ABOUT 0.5 VOLT.
NOTE: THE PROCEDURE IN STEP 4 MAY BE USED TO VERIFY THAT THE DIODE IN AN INSTALLED JUMPER HARNESS IS GOOD.
INSTALLATION - BUICK RIVIERA:
INSTALL JUMPER HARNESS AND REPLACE EBCM/EBTCM AS FOLLOWS:
1. DISCONNECT NEGATIVE BATTERY CABLE.
2. DISCONNECT LEFT-HAND COOLANT FAN MOTOR CONNECTOR.
3. INSTALL JUMPER HARNESS, P/N 12165487, ON CONNECTOR OF LEFT-HAND COOLANT FAN MOTOR (1). SEE FIGURE 1.
4. POSITION JUMPER HARNESS ON FAN AT FAN WEB AS SHOWN IN FIGURE 1. INSTALL WIRE TIE AROUND JUMPER HARNESS AND FAN WEB USING EXISTING FAN WEB HOLE (2). POSITION WIRE TIE SO THAT IT IS OFFSET FROM THE CENTER OF THE HARNESS, PROVIDING A MORE SECURE FIT. CUT OFF EXCESS WIRE TIE STRAP.
5. CONNECT JUMPER HARNESS CONNECTOR (3) TO MAIN BODY HARNESS.
6. REPLACE EBCM/EBTCM USING ON-VEHICLE SERVICE PROCEDURES IN SECTION 5E2 OF THE SERVICE MANUAL.
7. RECONNECT NEGATIVE BATTERY CABLE.
INSPECTION - OLDSMOBILE AURORA:
BEFORE INSTALLING A JUMPER HARNESS, PERFORM THE FOLLOWING INSPECTION/TEST PROCEDURE.
1. RAISE VEHICLE ON HOIST.
2. REMOVE LOWER AIR DEFLECTOR FROM VEHICLE IN AREA UNDER COOLANT FANS. TO DO SO, REMOVE 11 PUSH-IN RETAINERS WHICH SECURE AIR DEFLECTOR TO VEHICLE UNDERBODY. (REFER TO SERVICE MANUAL, SECTION 10, PARAGRAPH 2-3, ENGINE SPLASH SHIELD REPLACEMENT).
3. LOCATE LEFT-HAND (PRIMARY) COOLANT FAN CONNECTOR. FOR AURORA, IT IS ON A PIGTAIL HARNESS SEVERAL INCHES FROM THE FAN.
4. PERFORM STEPS 2, 3 AND 4 IN ABOVE "INSPECTION - BUICK RIVIERA" PROCEDURE.
INSTALLATION - OLDSMOBILE AURORA:
INSTALL JUMPER HARNESS AND EBCM/EBTCM AS FOLLOWS:
1. DISCONNECT NEGATIVE BATTERY CABLE.
2. OPEN ROSEBUD CLIP (1) ON LEFT-HAND COOLANT FAN MOTOR PIGTAIL HARNESS. DO NOT REMOVE CLIP FROM FAN WEB. SEE FIGURE 2.
3. DISCONNECT FAN MOTOR CONNECTOR (2) FROM MAIN BODY HARNESS. SLIDE FAN MOTOR PIGTAIL CONNECTOR OFF OF CHRISTMAS TREE CONNECTOR.
4. POSITION FAN MOTOR PIGTAIL HARNESS AT FAN WEB AS SHOWN IN FIGURE 3. INSTALL WIRE TIE AROUND PIGTAIL HARNESS AND FAN WEB (3), MAINTAINING A LOOP OF HARNESS ABOVE WIRE TIE. CUT OFF EXCESS WIRE TIE STRAP.
5. INSTALL JUMPER HARNESS, P/N 12165487, TO FAN MOTOR PIGTAIL CONNECTOR (4).
6. ATTACH CENTER OF JUMPER HARNESS TO FAN WEB USING EXISTING ROSEBUD (5). MAKE SURE ROSEBUD IS NOT CLIPPED OVER DIODE.
7. POSITION THE OTHER END OF THE JUMPER HARNESS AT FAN WEB (6) AS SHOWN IN FIGURE 3. INSTALL WIRE TIE AROUND JUMPER HARNESS AND FAN WEB. CLIP OFF EXCESS WIRE TIE STRAP.
8. CONNECT JUMPER HARNESS CONNECTOR (6) TO MAIN BODY HARNESS.
9. REINSTALL AIR DEFLECTOR IN AREA BELOW COOLANT FANS. INSTALL 11 PUSH-IN RETAINERS TO SECURE AIR DEFLECTOR TO VEHICLE UNDERBODY.
10. LOWER VEHICLE FROM HOIST.
11. REPLACE EBCM/EBTCM USING ON-VEHICLE SERVICE PROCEDURES IN SECTION 5E2 OF THE SERVICE MANUAL.
12. RECONNECT NEGATIVE BATTERY CABLE.
PARTS ARE EXPECTED TO BE AVAILABLE ON SEPTEMBER 5, 1994.
WARRANTY INFORMATION:
FOR VEHICLES REPAIRED UNDER WARRANTY, USE:
LABOR OPERATION NUMBER: H2505 (TO REPLACE EBCM/EBTCM) USE PUBLISHED LABOR OPERATION TIME. (OTHER LABOR HOURS) ADD: 0.1 HR. (TO INSPECT/INSTALL JUMPER HARNESS FOR BUICK RIVIERA) (OTHER LABOR HOURS) ADD: 0.3 HR. (TO INSPECT/INSTALL JUMPER HARNESS FOR OLDSMOBILE AURORA)
Greg
Henri
My friend has a 2003 Aurora (4.0) that does the same thing.
Is any else having this problem? Is there a known fix?
Thanks for any input.
Greg
Thanks, David
Or, if the chirping seems to be more tied to suspension movement, I'd agree with rjs.
Greg
Also the back passenger door window is not working. Any suggestion on how to diagnose problem? Will not work from drivers control or on back door control.
Thank you.
Don
donnapaca@aol.com
Greg
--Robert
Henri