# Distributor Cap and Rotor Replacement in Upland > Distributor cap and rotor replacement in Upland with wires kept in firing order and quality terminals. For classic cars, older trucks and work vehicles. Source: https://route66autorepairshop.com/engine-services/distributor-cap-replacement Updated: 2026-09-17 Business: Route 66 Auto Repair, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699 Hours: Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed **TLDR:** We replace the **cap and rotor together**, move wires in **firing order**, and use parts with **solid terminals** so the new cap lasts. Distributor cap replacement installs a new cap and rotor as a matched pair and moves each plug wire over in the correct firing order. Route 66 Auto Repair in Upland does this job for classic cars, older pickups and work vehicles that still run a distributor. We choose parts with solid terminals, label every wire before it moves, and check timing after. The job and parts are on a written estimate before we start. ## Who still needs a distributor cap replacement? Carbureted classics, many trucks from the 1990s and earlier, and some older work vans still use a distributor. For those owners, a cap and rotor are regular tune-up parts, just like plugs. Owners who drive a classic on weekends along Route 66 often replace them on a schedule, since a failure far from home is no fun. If your car is having running problems and you are not sure the cap is at fault, start with our [distributor cap repair](https://route66autorepairshop.com/engine-services/distributor-cap-repair) diagnosis instead. ## Why do cap and rotor parts matter so much? Caps look alike on the shelf. They are not alike once they are on the engine. - Terminal metal: brass terminals resist burning better than some cheaper alloys - Fit: a cap that seats loosely lets moisture in - Rotor tip: a thin tip wears fast and changes the spark gap - Vent design: blocked or missing vents trap moisture and ozone - Matching: a new cap with an old rotor wears unevenly ## Our distributor cap replacement process 1. **Label the wires:** Each plug wire is marked by cylinder before anything is moved, and we note where cylinder one sits. 2. **Swap wires one at a time:** Wires move from old cap to new cap in place, so the firing order stays correct. 3. **Replace the rotor:** The new rotor is fitted and checked for a secure seat on the shaft. 4. **Check timing and run:** We start the engine, check base timing where the engine allows it, and road test. ## What's included in distributor cap replacement - New distributor cap and matching rotor - Wire labeling and transfer in firing order - Cap seal or gasket where used - Shaft play check - Ignition timing check - Old cap and rotor kept to show you ## Need-now or need-later? **Need now:** - A cracked cap or carbon tracks found during diagnosis - A rotor with a burned or broken tip **Need later:** - Scheduled replacement on a car that runs well - Adding a cap and rotor to a planned tune-up ## How pricing and timing work On most engines this is a quick job. Distributors buried at the back of a V8 or under brackets take longer, and we tell you that up front. Parts for classics may need to be ordered. We quote the cap, rotor and any wires as separate lines. AAA members get 10% off parts and labor, up to $75. Same-day when the board allows; call before you drive over. ## Aftercare Look at the new cap once a year for cracks. If you see a crack or white dust inside, it is time again. Many owners pair this job with a [car tune-up](https://route66autorepairshop.com/auto-repair-services/car-tune-up) and new [spark plugs](https://route66autorepairshop.com/engine-services/spark-plug-replacement) so the whole spark path is fresh. If the distributor was moved, a [timing adjustment service](https://route66autorepairshop.com/engine-services/timing-adjustment-service) sets it back. ## Frequently asked questions ### Should I replace the rotor with the cap? Yes. They wear together, and the rotor is inexpensive. A new cap with a worn rotor leaves a larger spark gap, which burns the new terminals faster. ### Can I bring my own cap and rotor? You can. We inspect customer-supplied parts before installing them. There is no warranty on the part itself, and labor is still charged at book time. ### Should plug wires be replaced at the same time? If they test high in resistance or the boots are cracked, it makes sense while the cap is off. If they test fine, we leave them. The test results go on your repair order. --- Call (909) 608-7699 or visit https://route66autorepairshop.com/contact for a written estimate.