20 Most Recent 1985 Buick LeSabre - Page 5 Questions & Answers

Yes, the TPS is mounted on the throttle body assembly.

I suggest you get one of those manuals people get nowadays to do it yourself.. My brother use it to repair my car and it's totally repaired now. he got it from. www.reliable-store.com

If it works on your unit, it HAS to work on others. Possibly the connection needs cleaning with some contact cleaner spray fluid you can get from any auto parts store. Other than that, just take YOUR scanner to the inspection and let them use it to care for the situation.

Do not be discouraged if you discover you can not do this without destroying something. Your headlight switch is mounted with a bezel on the dashboard. It may be fastened in with screws. You will need to remove the bezel to remove and replace the switch. If it were me, I would either go to a public library or a car parts store and find a book to tell me the steps here. Or, perhaps ask at a car body shop. God bless your efforts.

Change the fuel relay Check this link https://www.justanswer.com/buick/4bnwv-buick-lesabre-custom-fuel-pump-relay-located.html

This video should be helpful. https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved=0ahUKEwib5rbUrsfYAhUE3YMKHVjoBaMQxa8BCCkwAg&usg=AOvVaw0VTJzWxrN8ZFOD4xbU2nov

Steering Column Replacement Hope this helps? Tools Required • J 42640 Steering Column Lock Pin • J 41352 Modular Column Holding Fixture

Removal Procedure

Warning! Refer to SIR Caution in Cautions and Notices. Caution! The wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or intermediate shaft from the steering gear. Failure to do so will cause the SIR coil assembly to become uncentered, which may cause damage to the coil assembly. Caution! Once the steering column is removed from the car, the column is extremely susceptible to damage. Dropping the column on its end could collapse the steering shaft or loosen the plastic injections which maintain column rigidity. Leaning on the column could cause the jacket to bend or deform. Any of the above damage could impair the column's collapsible design. If it is necessary to remove the steering wheel, use only the specified steering wheel puller. Under no conditions should the end of the shaft be hammered upon as hammering could loosen plastic injections which maintain column rigidity.
1. Disable the SIR system. Refer to SIR Disabling and Enabling Zone 3 in SIR.
2. Insert J 42640 into the steering column access hole in order to lock the steering column. This will maintain the correct orientation.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Remove the intermediate shaft lower pinch bolt.
5. Remove the intermediate shaft from the steering gear.
6. Lower the vehicle.
7. Remove the knee bolster. Refer to Bracket Replacement - Knee Bolster in Instrument Panel, Gages and Console.
8. Disconnect the steering column wiring harness connector from the main body wiring harness.
9. Disconnect the shift lever cable from the linear shift assembly.
10. Remove the shift cable retaining clip.
11. Press the shift cable tabs (1) together and remove the shift cable (2) from the steering column.
Caution! The steering column should never be supported only by the lower support bracket. Damage to the lower support could result. Important Stabilize the studs in order to remove the nuts securing the steering column to the instrument panel.
12. Support the column.
13. Remove the lower steering column retaining nuts.
14. Remove the upper steering column retaining nuts.
Important Discard the clips at the upper steering column support, if equipped. These clips are for assembly plant usage only.
15. Remove the steering column from the vehicle.
16. Install the steering column into J 41352 .

move those injectors to other cylinders and see in the problem moves if so replace the injectors if not check the wires, harness and ECM for problems

Your cooling tubes are probably rusted thru and you have a leak.

Misfiring under load is usually an ignition or fuel problem. When was the last time you changed spark plugs and wires?

Probably a faulty fuel pressure regulator or plugged filter.

did you disconnect a ground on the engine when you did the other work and forget to put it back on or tighten it ? Take the battery connections apart and see if they are full of corrosion. I assume it has a fully charged battery in it now.

I don't know

What body fuse ? The body functions on your vehicle are controlled by three different control module . The IPM - instrument panel integration module ,the DIM - dash integration module an the RIM - rear integration module. Having the vehicle scanned for DTC'S - diagnostic trouble code's should always be the first step in a diagnostic procedure for this type problem . Not at auto zone or advance etc.... they can not pull code's from the body computers . When you push the button for the rear defroster ,trunk release ,these are input's to one of the front modules which will send a message over the class 2 data bus to the rear module which will energize a relay to pop the trunk or turn on the rear defroster . The rear module also controls the interior light's . Your best bet , take it to a qualified repair shop.

Are all of these not working ? • Air temperature switch • Cigar lighter lamp • Door switches • Driver information center (DIC) switch • Headlamp switch • Head-up display (HUD) switch • Heated seat switches • HVAC control assembly • Instrument panel cluster (IPC) • Memory function switch • Radio • Steering wheel controls • Window switches Interior Lamps Dimming This group of interior lighting includes lamps which may be dimmed. This group uses a combination of class 2 controlled illumination and incandescent lamps: • Air temperature switch • Cigar lighter lamp • Door switches • Driver information center (DIC) switch • Headlamp switch • Head-up display (HUD) switch • Heated seat switches • HVAC control assembly • Instrument panel cluster (IPC) • Memory function switch • Radio • Steering wheel controls • Window switches For the interior lighting to be dimmed the following conditions must be met: Here is a discription of how they work ,factory service info. • A low light level has been detected by the dash integration module (DIM) • Headlamp switch is placed in to the PARK or HEAD position • Ignition switch is placed in the ON position Then all class 2 displays and all incandescent back lighting will be illuminated to the level set by the instrument panel (I/P) dimmer switch. When the I/P dimmer switch is moved from MIN to MAX, all class 2 displays and all incandescent back lighting respond from minimum intensity to maximum brightness. The DIM supplies battery positive voltage to the coil side of the PRK LP relay in the rear fuse block. When the I/P dimmer switch is moved from MIN to MAX, then the instrument panel module (IPM), W/CJ2, or climate control panel (CCP), W/C67, applies a message to the class 2 communication circuit to the DIM. The DIM then applies a ground to the park lamp relay control circuit. This energizes the PRK LAMP relay and allows battery positive voltage to be applied through the DIMR fuse to the DIM. The DIM then illuminates the following incandescent lamps through the incandescent dimming output circuit: • Cigar lighter lamp • DIC Switch • Headlamp switch • HUD switch • HVAC control assembly • IPC • Radio • Steering wheel controls The DIM also applies a message to the following class 2 controlled illumination components: • Drivers door module (DDM) • HVAC control assembly • IPC • Radio The DDM will then send a message through the simple bus interface (SBI) to the RH front door module (RFDM). The door modules will then illuminate the following components through the incandescent dimming output circuit: • Air temperature switch • Heated seat switches (W/KA1) • Memory function switch (W/A45) • Power door lock switches • Power window switches The ground for these components are provided from the DDM and RFDM. The following components are grounded at G200: • Headlamp switch • HVAC control assembly • Radio • Steering wheel controls The following components are grounded at G201: • Cigar lighter lamp • DIC Switch • HUD switch Having the vehicle checked for DTC'S - diagnostic trouble code's would probably be your best course of action . DTC B2556 (1) The I/P dimmer switch is a potentiometer. The instrument panel module (IPM) determines the control setting based on the voltage from the I/P dimmer switch. The IPM sends out a class 2 message to the dash integration module (DIM). The intensity of the interior backlighting shall be adjustable when ever the park lamps are on. The intensity of the vacuum florescent displays shall only be adjustable when it is night and the park lamps are active. DTC B2627 DTC B2628 Circuit Description The I/P dimmer switch is a potentiometer. It is powered by the HVAC control module. The HVAC control module determines the level of dimming desired based on the voltage from the I/P dimmer switch. The HVAC control module converts the I/P dimmer switch feed back voltage to a digital signal and puts it on the Class II communication bus. Dash Integration Module (DIM) The DIM is wired to the class 2 serial data line. The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics. The DIM functions include the following: • Control of headlights and exterior lamps • Horn relay control • Interior lamps incandescent dimming • Lamps On signal with wiper/washer • Power moding control over Class 2 serial data line • Steering wheel controls • Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules Your best bet ,take your vehicle to a qualified repair shop.

not enough detail what gauge , voltage regulator or sender

Check out that answer from a pick & pull yard

Sounds like a faulty coil pack. When cold it works but as it heats up a faulty one acts like your description.