HomeStandard Ignition TM-29 Automatic Transmission Vacuum Modulator
Part #: TM-29

Standard Ignition TM-29 Automatic Transmission Vacuum Modulator

⚙️ 153 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Mercury, Bobcat, Bronco, Capri, Cougar, E-100 Econoline, E-100 Econoline Club Wagon, E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline, Escort, F-100, F-150, F-250, F-350, Fairmont, Grand Marquis, LN7, LTD, Lynx, Marquis, Monarch, Montego, Mustang, Pinto, Tempo, Thunderbird, Topaz, and Zephyr
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Reliable Automatic Transmission Vacuum Modulator for Ford and Mercury Vehicles

The Standard Ignition TM-29 automatic transmission vacuum modulator is designed to maintain proper transmission function in select Ford and Mercury models. This component helps regulate transmission shifting by controlling vacuum pressure, ensuring smooth gear changes and optimal vehicle performance.

  • Compatible with a wide range of Ford and Mercury vehicles including Bronco, Mustang, F-150, and Cougar
  • Part number TM-29 for precise identification and fitment
  • Designed to regulate vacuum pressure for automatic transmission systems
  • Durable construction to withstand typical operating conditions
  • Direct replacement for original equipment modulators

Product Details and Compatibility

The Standard Ignition TM-29 vacuum modulator is engineered for automatic transmissions in various Ford and Mercury models such as the Ford Bronco, Mustang, F-150, and Mercury Cougar. This modulator plays a critical role in controlling the transmission’s hydraulic pressure by responding to engine vacuum signals. Proper modulation ensures smooth shifting and helps prevent transmission slippage or harsh gear changes. The TM-29 is a direct replacement part, designed to meet or exceed OEM specifications for reliable performance.

Common Applications and Problem Resolution

  • Helps resolve delayed or harsh shifting in automatic transmissions
  • Addresses transmission slippage caused by vacuum leaks or faulty modulators
  • Improves overall transmission response and drivability in Ford and Mercury vehicles
  • Prevents erratic shifting behavior related to vacuum modulation issues
  • Restores proper transmission function in models like the Ford F-150 and Mercury Marquis

Installation Notes and Tips

When installing the Standard Ignition TM-29 vacuum modulator, ensure the vacuum line is securely connected and free of cracks or leaks. It is important to verify that the modulator is properly seated and aligned with the transmission to avoid vacuum loss. Consult the vehicle’s service manual for specific torque specifications and installation procedures. Testing the vacuum line for leaks before installation can help prevent future transmission issues.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet industry standards for quality and durability. The TM-29 vacuum modulator undergoes rigorous testing to ensure reliable operation in compatible Ford and Mercury vehicles. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

This part fits 153 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
1986FordF-1504.9LL6N/A
1985FordEscortN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1985FordF-1505.0LV8N/A
1985FordF-1504.9LL6N/A
1985FordMustang5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985FordMustang3.8LV6N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985FordTempoN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1985FordThunderbird5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985MercuryCapri5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985MercuryCougar5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985MercuryCougar2.3LL4N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1985MercuryLynxN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1985MercuryTopazN/Aw/o High Altitude Emissions
1984FordEscortN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1984FordF-1504.9LL6N/A
1984FordF-1505.0LV8N/A
1984FordMustang3.8LV6N/Aw/ Yellow Stripe
1984FordMustang5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1984FordTempoN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1984FordThunderbird3.8LV6N/Aw/ Yellow Stripe
1984FordThunderbirdN/Aw/ Yellow Stripe
1984MercuryCapri5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1984MercuryCapri3.8LV6N/Aw/ Yellow Stripe
1984MercuryCougar2.3LL4N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1984MercuryCougar3.8LV6N/Aw/ Yellow Stripe
1984MercuryCougar5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1984MercuryLynxN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1984MercuryMarquis3.8LV6N/Aw/ Yellow Stripe
1984MercuryTopazN/Aw/o High Altitude Emissions
1983FordEscortN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1983FordMustang3.8LV6N/Aw/ Yellow Stripe
1983FordMustang5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1983FordThunderbird5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1983FordThunderbird3.8LV6N/Aw/ Yellow Stripe
1983FordThunderbird2.3LL4N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1983MercuryCapri5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1983MercuryCapri3.8LV6N/Aw/ Yellow Stripe
1983MercuryCougar5.0LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1983MercuryCougar3.8LV6N/Aw/ Yellow Stripe
1983MercuryLN7N/Aw/o High Altitude Emissions; w/ Yellow Stripe
1983MercuryLynxN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1983MercuryMarquis3.8LV6N/Aw/ Yellow Stripe
1982FordEscortN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1982FordThunderbird3.8LV6N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1982FordThunderbird4.2LV8N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1982MercuryCapri5.0LV8N/Aw/ Yellow Stripe
1982MercuryCougar2.3LL4N/Aw/o High Altitude Emissions; w/ Yellow Stripe; w/ Single Diaphragm
1982MercuryLN7N/Aw/o High Altitude Emissions; w/ Yellow Stripe
1982MercuryLynxN/Aw/o High Altitude Emissions; w/ Yellow Stripe
1981FordThunderbird5.0LV8N/Aw/ Yellow Stripe; w/ Single Diaphragm
1980FordLTD5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1980FordLTD5.8LV8N/Aw/ Yellow Stripe; w/ Single Diaphragm
1980FordThunderbirdN/Aw/ Yellow Stripe; Model XP Trans.
1980MercuryGrand Marquis5.0LV8N/Aw/ Yellow Stripe
1980MercuryMarquis5.0LV8N/Aw/ Yellow Stripe
1980MercuryMonarch4.1LL6N/Aw/ Yellow Stripe; w/ Single Diaphragm
1980MercuryMonarch4.2LV8N/Aw/ Yellow Stripe; w/ Single Diaphragm
1980MercuryMonarch5.0LV8N/A
1979FordFairmont5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1979FordLTD5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1979FordMustangN/Aw/ Yellow Stripe; Model XP Trans.
1979FordThunderbirdN/Aw/ Yellow Stripe; Model XP Trans.
1979FordThunderbirdN/Aw/ Yellow Stripe
1979MercuryCapri5.0LV8N/AAutomatic Transmission Vacuum Modulator for Model XP Trans
1979MercuryCougar5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1979MercuryMonarch5.0LV8N/A
1979MercuryZephyr5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1978FordF-1004.9LL6N/Aw/ Yellow Stripe
1978FordF-1005.0LV8N/Aw/ Yellow Stripe
1978FordF-1006.6LV8N/Aw/ Yellow Stripe
1978FordF-1005.8LV8N/Aw/ Yellow Stripe
1978FordF-2507.5LV8N/Aw/ Yellow Stripe
1978FordF-2505.8LV8N/Aw/ Yellow Stripe
1978FordF-2506.6LV8N/Aw/ Yellow Stripe
1978FordF-2505.0LV8N/Aw/ Yellow Stripe
1978FordF-2504.9LL6N/Aw/ Yellow Stripe
1978FordFairmont5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1978FordLTDN/Aw/ Yellow Stripe; Model XP Trans.
1978FordThunderbirdN/Aw/ Yellow Stripe
1978FordThunderbirdN/Aw/ Yellow Stripe; Model XP Trans.
1978MercuryCougarN/Aw/ Yellow Stripe; Model XP Trans.
1978MercuryZephyr5.0LV8N/Aw/ Yellow Stripe; Model XP Trans.
1977FordBroncoN/A
1977FordE-100 EconolineN/Aw/ Yellow Stripe; Model XP Trans.
1977FordE-100 Econoline Club Wagon4.9LL6N/Aw/ Yellow Stripe; w/ 1 Vacuum Port; Model XP Trans.
1977FordE-150 EconolineN/Aw/ Yellow Stripe; Model XP Trans.
1977FordE-150 Econoline Club Wagon4.9LL6N/Aw/ Yellow Stripe; w/ 1 Vacuum Port; Model XP Trans.
1977FordF-100AutomaticN/Aw/ Yellow Stripe
1977FordLTD5.8LV8N/AAutomatic Transmission Vacuum Modulator for Model XP Trans
1977MercuryCougarN/Aw/ Yellow Stripe; Model XP Trans.
1977MercuryMonarch5.8LV8N/Aw/ Yellow Stripe; w/ Single Diaphragm
1977MercuryMonarch3.3LL6N/Aw/ Yellow Stripe; w/ Single Diaphragm
1976FordBroncoAutomaticN/A
1976FordE-100 EconolineAutomatic4.9LL6N/Aw/ Yellow Stripe; w/ Sliding Door
1976FordE-100 Econoline Club Wagon4.9LL6N/Aw/ Yellow Stripe; Push-In Type; Model XP Trans.
1976FordE-150 Econoline4.9LL6N/Aw/ Yellow Stripe; Model XP Trans.; w/ Sliding Door
1976FordE-150 Econoline Club Wagon4.9LL6N/Aw/ Yellow Stripe; w/ 1 Vacuum Port; Model XP Trans.
1976FordF-1004.9LL6N/APush-In Type
1976FordF-1504.9LL6N/Aw/ Single Diaphragm; w/ PEA-3W Trans.
1976FordF-2504.9LL6N/Aw/ Single Diaphragm
1976MercuryBobcat2.8LV6N/Aw/ Yellow Stripe; Model XP Trans.
1976MercuryMonarch5.0LV8N/AAutomatic Transmission Vacuum Modulator for Model XP Trans
1976MercuryMonarch3.3LL6N/Aw/ Yellow Stripe; w/ Single Diaphragm
1976MercuryMonarch5.8LV8N/Aw/ Yellow Stripe; w/ Single Diaphragm
1975FordBroncoAutomaticN/A
1975FordE-100 Econoline4.9LL6N/Aw/ 1 Vacuum Port; Model XP Trans.
1975FordE-100 Econoline5.0LV8N/Aw/ Single Diaphragm
1975FordE-150 Econoline5.0LV8N/Aw/ Single Diaphragm
1975FordE-250 Econoline5.0LV8N/Aw/ Single Diaphragm
1975FordF-1004.9LL6N/APush-In Type; Model XP Trans.
1975FordF-1504.9LL6N/Aw/ Single Diaphragm; w/ PEA-3W Trans.
1975FordF-250AutomaticN/APush-In Type
1975FordF-2504.9LL6N/Aw/ Single Diaphragm
1975MercuryMonarchN/Aw/ 1 Vacuum Port
1975MercuryMontegoN/Aw/ 1 Vacuum Port; Model XP Trans.
1974FordBronco5.0LV8N/A
1974FordBroncoN/A
1974FordE-100 Econoline5.0LV8N/Aw/ Single Diaphragm
1974FordE-100 EconolineN/Aw/ Single Diaphragm
1974FordE-100 EconolineAutomatic4.9LL6N/Aw/ 1 Vacuum Port
1974FordF-2504.9LL6N/APush-In Type; Model XP Trans.
1974FordPinto2.3LL4N/Aw/ Yellow Stripe; w/ Single Diaphragm
1974FordPinto2.0LL4N/Aw/ Yellow Stripe; w/ Single Diaphragm
1973FordBronco-L--N/A
1973FordBronco5.0LV8N/A
1973FordBroncoN/A
1973FordE-100 Econoline5.0LV8N/Aw/ Single Diaphragm
1973FordE-100 EconolineN/Aw/ Single Diaphragm
1973FordE-100 EconolineAutomatic4.9LL6N/Aw/ 1 Vacuum Port
1973FordF-2504.9LL6N/APush-In Type; Model XP Trans.
1973FordMustangN/APush-In Type; Model XP Trans.
1972FordE-100 Econoline3.9LL6N/Aw/ Single Diaphragm; w/ Push-In Type
1972FordE-100 Econoline4.9LL6N/Aw/ Single Diaphragm; w/ Push-In Type
1972FordE-100 Econoline5.0LV8N/Aw/ Single Diaphragm; w/ Push-In Type
1972FordE-100 EconolineN/Aw/ Single Diaphragm; w/ Push-In Type
1972FordF-1004.9LL6N/APush-In Type; Model XP Trans.
1972FordF-2504.9LL6N/APush-In Type; Model XP Trans.
1972FordF-3504.9LL6N/APush-In Type; Model XP Trans.
1972FordLTDN/APush-In Type; Model XP Trans.
1972FordMustangN/APush-In Type; Model XP Trans.
1972FordPinto2.0LL4N/APush-In Type
1972FordPinto1.6LL4N/APush-In Type
1972MercuryCougarN/Aw/ Push-In Type; Model XP Trans.
1972MercuryMontegoN/Aw/ Push-In Type
1971FordLTDN/APush-In Type
1971FordPinto1.6LL4N/APush-In Type
1971FordPinto2.0LL4N/APush-In Type
1970FordLTD7.0LV8N/APush-In Type
1970FordLTD6.4LV8N/APush-In Type
1970FordLTD5.8LV8N/APush-In Type
1970FordLTD3.9LL6N/APush-In Type
1970FordLTD5.0LV8N/APush-In Type
1970FordLTDN/APush-In Type

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

19106954510032040057-70097R1024D2AZ7A377AFM2317TM29TM731VM129VM631

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.