20 Most Recent 1991 Oldsmobile Ninety Eight - Page 5 Questions & Answers

old 93 cars, have lots of problems. I guess the fan is in front of the engine and near rear of the RADIATOR.? no engine told of 3 at all and they are not the SAME. first is check for blown fuses, (easy low hanging fruit,no?) the fans is electric, so says SM service manual and has 2 wires. one is ground other is 12vdc to the fan relay that must be good. the fan can be hot wire tested, easy boy those old drawings are a mess. fuse link F blow,, op right I do not know if this is AC only or mixed. (engine/AC / fans)

Doby , you have like 100 posts here for one car. ( a record)is this car really that sick? but never told 1 problem at all. this post.just a HUNT, game.?you posted this many times and never bought GM Olds full service manual for it, that tells this answer clear as day./The PRNDL switch is on or inside the transmission and no engine told nor transmission told exactly how can there be any answer?"Do you keep it in park or neutral"THM440/4T60/ME9 TRANS (ME9 is RPO code)<< guess 1THM440 is original name or pure hydramatic box.GM box it is.there is shift solenoid in the shifter console,Park lock out, has long history of changes.on some the PRNDL switch on side if tranny box goes to ECUand if not in park or N, no spark happens.on others there are cable to key switch to shifter linkagethat blocks key actions using this cable. and more. manuals for this 34 year old car are hard to find, now.the real service manual will cover al Vin cars that yearit will cover all park lock out schemes use then, of at least 3.pays you 20 bucks and see what is here.https://eautorepair.net/Marketing/Default.asp1988 only books then so online help is sparse and are hand scanned pages, only, but , at least try.

Disable the SRS system, remove the airbag module, remove the wheel nut, and use a steering wheel puller to remove the wheel.

band damper motors (actuators, servo's regardless type) you already now the heater core is 180f + hot. even touching its 2 lines at the fire wall proved that and OBD2 scans show ECT reads 180F so engine side is good so then you fail to know the days has what is called heater./distribution air system. that huge box of damper there that love to fail even the service manual covers this. mine even shows removing the damper motor (vac or electr) and turn the damper hinge rod by hand to prove the damper door is not stuck if not stuck heat flows, hard. to one of many outputs called MODE dampers. we then test the mode dampers. see why it fails. all this is under the dash keep the hood closed or go broke throwing part not bad. the SM service manual on line shows chapter HVAC and covers every test to do , in all Chrysler products. oops I see old vacuum servo motors here , actuators modern name bad controls or bad servo's or even fell off vacuum lines I see 2 motor servo's too, temperature damper DC motor and mode, motor drive. called electric inlet actuator.( is Recirc ) and and AUX motor damper drive. found the hybrid schematic for this car, the whole thing vac and electric. https://imgur.com/a/cHq4CCY ONE CAN WATCH EACH DAMPER MOVE OR RUN THEM BY HANDS AND EASILY PROVE WHICH OF THE 5 FAIL. SENSE HOT AIR IS ON THE LEFT THERE WE KNOW KNOW VACUUM SIDE IS BAD, HE DAMPERS, STUCK THE SERVO BAD, OR THE CONTROL PORTS TO IT ARE BAD. EVEN A VACUUM LINE FELL OFF OR ROTTED OFF. 23 YEARS OLD

well the service manual shows this box. TCC clutch lock up or this Torque Converter Clutch Pulse Width Modulation (TCC?PWM) Solenoid Valve Assembly????????? Automatic Transaxle - 4T65-E The "T" means transverse boc. E means shifted 100% by electronics TCM brain, most are inside PCM. no engine told but this is the most common box, GM made and an put it in vast cars sold world wide , for them and other makes and lots of tops manuals covering it the answer is the TCC sol is inside the box. above pan' the TCC is mounted to the valve body. exactly here, as seen in the service manual and GM books on this box. there is Brake TCC switch that kills TCC function, braking. the clutch unlocks TC) there is TCC-PWM sol on the valve body there is TCC pressure switch same place to tell the PCM TCC did lock or did not lock up via pressure.

https://www.justanswer.com/oldsmobile/734kv-oldsmobile-silhouette-remove-ignition-need.html ---------- https://www.directfactoryparts.com/v-2003-oldsmobile-silhouette--gls--3-4l-v6-gas/electrical--ignition-lock

Hello, thank you for your question. We have researched your model and found a helpful video: https://youtu.be/UvYH1f9J_LQ
If you have further questions feel free to ask.

this is not clear at all (is 3.4L engine my bet) the starter is silent or not? if the starter motor spins the enigine crank shaft , fast that that is cranks ok not start engine. no crank means. the crank shaft never spins and that as a few causes, blow fuse test them all? crank in park and in Neutral too? N can work and P fail on any car. no power to PCM fuse mean main power is dead main 12vdc power buss is dead. and that is much larger fuse even 100amps. if you scan the PCM well that action will be dead. lacking PC power so here is that power feed, battery must be 12.6vdc rested, not 10v here we go ,2 paths dead, starter motor and PCM dead power. Fuse link C blow out. GM gray coded,same goes fore Fuse a1/2 blown. fuse link A, blown GM rust coded make alternator 100%^ dead and now the battery dead too ,lacking working ALT. next is fuse link Z (GM gray) runs vast things. I wonder what fuse is this PCM fuse as none are marked that. there are 100 schematic to see, I am working throught them all to find PCM are head lamps dead, are brake lamps dead? head lamps work key off, so is always fix it first if dead. fuse (Fa1/2 ) PCM/ABS fuse 10amps the a1 side is main power to this fuse. and this also kills dead the transmission range switch PRNDL and starter too dies. So fuse A1 side is your critical failure point on this car. so maxi fuse 40amps blew out from a short. A1 FUSE GOES HOT KEY ON ONLY. (NO IMMO FAILURES IF HAS IT. IF NOT a ign MAIN 1 FUSE 40AMPS IS BLOW OR POWER TO MAIN ONE IS GONE. mIAN1 IS WIRED HARD TO THE BATTERY MAIN ALL MAXI FUSES ARE, SO IS BLOWN THAT FUSE OR THE KEY SWITCH IS BAD.(IN RUN)

after replacing the ignition tumbler. You replaced the key an lock cylinder, correct ? You need to program new key to the vehicle,if you got the right kind of key . You can't just buy any aftermarket key. Your best bet,take it to a qualified repair shop.

Possibly a bad microswitch in the door latch. You can try spraying the latch down with contact cleaner then WD40 and open and close the doors a few times, but usually it is time for a latch replacement.

This problem is typically caused by a discharged battery or a poor battery connection. These conditions can allow some components with a low electrical load to work properly, however when it comes time to start the engine (which requires a high electrical load), it will not start. The first thing you'll want to do is check the battery terminals. Look for signs of corrosion (green powdery buildup) at the battery posts and clean as necessary. Also, attempt to twist the terminals on the battery posts by lightly pushing and pulling on the battery cables; they should not move if they are properly tightened. If no issues are found, attempt to jump-start the vehicle. If jump-starting the vehicle works, you could have a faulty battery or a parasitic drain, but a faulty battery is by far the more common of the two failures. You can read more about how to deal with a dead or discharged battery here: https://www.yourmechanic.com/article/how-to-handle-dead-battery-problems

First, try spraying some starter fluid into the throttle body. If it starts, then the problem is in the fuel system. If you hear the pump running, is the fuel gauge working? If it still does not run, then possible ignition problems. Using a scanner would help in determining where the problem is.

Doesn't sound like you connected the column to the rack. If you have done a complete revolution of the wheel you probably need a new clock spring now too.

Lots of possibilities. First with the ac turned on and car running, check to see if the compressor hub is turning. If it is, then you will need to check the ac pressures with a set of gauges. If you do not know how, the have someone qualified to do it. If not, then it could be a pressure switch, relay, fuse, or any number of electrical connections or wires. Do a visual inspection.

Could need a simple carburetor adjustment or a rebuild. https://www.youtube.com/watch?v=xl4OA5aDyNY

greetings ANON: Eighty-Eight is real name, a 1998 , Eighty-EIGHT. marketed from 1989 on as the Eighty Eight 1998 in USA has the great PCM (engine brain) OBD2, that if you scan it can see DTC P07xx codes. Ninth generation (1986-1991) I say that to be talking about this generation, 88 is not. 4-speed 440-T4/4T60 automatic(old and new names)same. 4T means 4 speed, transverse box. 60 is load rating. wiki car lies ,it is 4T60e ELECTRONIC SHIFT , GM MN3. I'm confused, on that. EVIDENCE. does the shift lever work (means just it) OK PRNDL how long ago did the car run perfect. last week, last year, or? wasn't slipping but now is.? why say burnt, (visual, smell or both) most fluids now turn from red to brown, and is normal based on brand of ATF there. key , off, the you key on in park and start the engine, all gears dead? PRNDL . R D and L are dead. then if not dead and all gears kinda work does D , shift to all gears, 1,2,3? and no false neutrals.? or called FLARE, (is false Neutral) all A?T made slip, until the TCC clutch locks up. so slip is normal how , why is what matters. abnormal is what we fix. GM called it M15 in the RPM (no turbo engines) or GM (BOP) MN3. (buick , olds, Pontiac =BOP) the cars RPO tag tells what box is there of the 3, used. day1.

• M15 - 245 mm (9.6 in) torque converter
• MN3 - 258 mm (10.2 in) torque converter

just the clutch is different, the clutch size. 4T60e , the new name of this box is here and is PCM shifted (TCM). has speed sensors and has 2 shift solenoids. to make it shift. not comes test #1 does revers fail> if yes transmission is bad if shift lever not broken that is (and its linkage to box) DTC P0705 Trans Range Switch Circuit? errors this 4T60E BOX can produces, lots and losts of P07xx errors if you just scan the PCM port under dash (obd2, 16pin port) using any real scan tool USA.

• check ATF levels first, per the operators guide, not guessing how.
• Check all fuses
• then scan the PCM P07xx DTC errors stored?

to see any speed sensors errors, solenoid errors or shift errors or even brake errors (park lock out feature) in most cases if Drive or Low or Reverse is dead. the transmissions pump port will show way too low pressure. but the scan too are important. if selector errors. some causes are easy to fix. selector, sensors or solenoids. or wires bad to them./ If reverse fails say so as his is top key failure here to what is wrong. 2 solenoids. the PC SOL on the right can fail and shifts will be wrong. not the lack of reverse sol. its mechanical. so if Rev fails pump pressure may be low.

PURGED.1998 DATA1988 Ninety-Eight. regency brougham real nameSEE BELOW FOR REAL NAME FACTS, ENGINE GUESSED.https://eautorepair.net/Marketing/Default.asp

Only you can see where the leak is. Probably a hose has split.

A magnet with a extension may work.

that doesnt mean that its not overheating --have vehicle scanned can be a failed fan-sensor-water pump etc theirs multi reasons