Top 20 1996 Buick Roadmaster Questions & Answers

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Before doing that, I would find the wire at the fuse panel that goes to the pump and try jumping it there - could be corrosion in the relay socket, the wrong relay or something like that.

Under passanger side of the instrument cluster behine glove box . To see it you will need to take the insulator panel down and take glove box out .

Sounds like a its out of timing

On your engine most likely close to the oil filter . Have a close look around where the oil filter attaches to the engine.

1996 Roadmaster

1. Locate the programming connector located in the LH trunk. Trim may have to be pulled back to access programming connector. ( Connector has black/white wires leading up to it and it is not connected to anything.)
2. Jump programming connector terminals. Leave terminals jumped unitl step 6.
3. System should now lock and unlock doors to indicate programming mode has been entered.
4. Press any button on keyless remote once. System should now lock and unlock doors, indicating successful programming of keyless remote.
5. Repeat step 4 for additional remote or other existing keyless remote. NOTE: A maximum of only two Keyless Remotes can be programmed.
6. Remove programming connector jumper wire to exit programming mode.
7. Test remote(s).

You will need to get a copy of the shop manual, so you'll know how to pull your dash cover and gauge cluster as necessary to replace the bulbs. You can get the shop manual in print or on disc from Irv Bishko, and other sources. Bishko Books Repair Manuals Owners Manuals Parts Books Sales Brochures

You answered your own question. There is a problem with the fuel system. Check the fuel filter, fuel pressure, fuel pump and possibly plugged injectors. Using a scan tool can narrow your search for this problem

Check the operation of the latch while it's open. Maybe the latch accidentally got pushed into the locked position so it won't lock around the pin. Unlock the latch, then manually pull back the tabs.

Here's a link to your sensor. Component Locations Vehicle Speed Sensor Location AutoZone com

THIS VEHICLE HAS OPTIC SPARK DIST. THE PLUG WIRES RUN ALONG A CHANNEL BEHIND THE ALT AND A/C COMPRESSOR. THE WIRES MUST BE PROPERLY INSTALLED IN THE CHANNELS OR CHAFFING AND PINCHING WILL RESULT. VERY GOOD SYSTEM, JUST A LITTLE HARD TO REPLACE.

Here is av full walktthru on youtube: https://www.youtube.com/watch?v=U_-ECgi1_ag Hope it work, looks fun! Best /THomas

I hate to be the bearer of bad tidings, BUT... it\'s obvious that these corrections you\'ve made [lots of $$$$$] have nothing to do with your problem.Quite OFTEN idle and low speed engine performance problems are CAUSED by LEAKS in the VACUUM lines/system!!!!!As a vehicle ages, summer heat, as well as engine heat, will cause the rubber or plastic of vacuum lines to deteriorate and either crack or become loose in their connection to nipples and tees in the vacuum system. This allows EXTRA AIR into the engine.In the early stages of this process, the engine computer will be able to correct for the EXTRA AIR being sucked into the system.However, as the air leakage increases with time and heat, the computer cannot fully correct, and thus engine performance suffers.One fix is to replace all vacuum system components, BUT... that will COST HUNDREDS OF DOLLARS!!!!!The way I have used to FIND vacuum leaks is to use a TINY PLUME of Propane from a small torch.With the engine idling, gently open the Propane torch valve, "cracked" open just enough to be able to smell the Propane [DO NOT IGNITE/light the Propane, we only want a VERY small amount of gas, but NO FLAME!!!!!].Then, apply the invisible tiny jet of Propane to EACH connection point in the vacuum system, while the engine is idling.The engine idle speed [RPM] and sound should remain unchanged IF there is no leak at that connection.HOWEVER, IF there IS a LEAK, the engine idle RPM and sound will change, and this is indicative of a leak at that point.Once, when out of Propane, I substituted WD-40, and that worked also!I suspect that any gas, either a combustible fuel gas, OR even a non-combustible gas would work because either would change the air [Oxygen] to vehicle fuel ratio, thus changing the idle RPM.

use a water dispersant to clean out the distributor cap, HT leads and around the coil terminals. Check that there is no carbon tracks in the cap and that the plug leads are not touching each other . clean around the rubber covers at the plugs as any moisture there will short the HT spark directly to earth

The ignition module sounds right. The reason the dealer wants to charge $400 is for the labor involved plus the part.

No that will not work.

I would start with a tranny flush and filter change.

check your starter solenoid or your starter

lh kick panel remove access cover

If one is bad you replace bothYou have a 1996 bad or not theirover 14 years old so they get replaced at that point,as they no longer are efficientenough to process oxygenYou use the PO420 & PO430 codes you shouldhave as well as look at scan tool data,fuel trim,& backprobe & test the O2 Sensors.If you hit them by hand when cold they may rattleas the material inside is broken prosiblyAverage person can not tell much,so noNeed experience & proper test equipmentJust replace both side & the front O2 sensors yourself