{"product_id":"d21-6005-genuine-paccar®-throttle-pedal-assembly","title":"D21-6005 | Genuine Paccar® Throttle Pedal Assembly","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA Throttle Pedal Assembly\u003cstrong data-start=\"2\" data-end=\"29\"\u003e D21-6005\u003c\/strong\u003e is the complete accelerator pedal unit in a vehicle. It's the part you press with your foot to tell the engine how much power you want. Throttle Pedal Assembly For Peterbilt 379, 335, 386, etc. with Cummins Engine\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: D21-6005\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Paccar\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eFits D21-6005 For\u003c\/strong\u003e:\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"font-size: 0.875rem;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cul\u003e\n\u003cli data-section-id=\"cbbpsu\" data-start=\"331\" data-end=\"374\"\u003e\n\u003cstrong data-start=\"333\" data-end=\"350\"\u003ePeterbilt 379\u003c\/strong\u003e with \u003cstrong data-start=\"356\" data-end=\"367\"\u003eCummins\u003c\/strong\u003e engine\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gka192\" data-start=\"375\" data-end=\"418\"\u003e\n\u003cstrong data-start=\"377\" data-end=\"394\"\u003ePeterbilt 335\u003c\/strong\u003e with \u003cstrong data-start=\"400\" data-end=\"411\"\u003eCummins\u003c\/strong\u003e engine\u003c\/li\u003e\n\u003cli data-section-id=\"pvi070\" data-start=\"419\" data-end=\"466\"\u003e\n\u003cstrong data-start=\"421\" data-end=\"438\"\u003ePeterbilt 386\u003c\/strong\u003e with \u003cstrong data-start=\"444\" data-end=\"459\"\u003eCummins ISX\u003c\/strong\u003e engine\u003c\/li\u003e\n\u003cli data-section-id=\"xpfzo2\" data-start=\"467\" data-end=\"610\"\u003eOther \u003cstrong data-start=\"475\" data-end=\"506\"\u003ePeterbilt heavy-duty trucks\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePurpose of using D21-6005\u003c\/strong\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003e: \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cul\u003e\n\u003cli data-section-id=\"12c924e\" data-start=\"187\" data-end=\"303\"\u003e\n\u003cstrong data-start=\"189\" data-end=\"215\"\u003eControls acceleration:\u003c\/strong\u003e Pressing the pedal tells the engine to produce more power, making the vehicle speed up.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bflypm\" data-start=\"304\" data-end=\"497\"\u003e\n\u003cstrong data-start=\"306\" data-end=\"338\"\u003eRegulates engine air intake:\u003c\/strong\u003e In most modern vehicles, the pedal sends an electronic signal to the engine control module (ECM), which adjusts the throttle valve to let in more or less air.\u003c\/li\u003e\n\u003cli data-section-id=\"pic4mj\" data-start=\"498\" data-end=\"662\"\u003e\n\u003cstrong data-start=\"500\" data-end=\"529\"\u003eImproves fuel efficiency:\u003c\/strong\u003e The ECM can precisely control the throttle based on pedal input, engine speed, load, and other factors to optimize fuel consumption.\u003c\/li\u003e\n\u003cli data-section-id=\"nyvihh\" data-start=\"663\" data-end=\"946\"\u003e\n\u003cstrong data-start=\"665\" data-end=\"685\"\u003eEnhances safety:\u003c\/strong\u003e Modern throttle pedal assemblies often contain two or more position sensors that constantly compare readings. If the signals don't match, the ECM can detect a fault and limit engine power (called \"limp mode\") to help reduce the risk of unintended acceleration.\u003c\/li\u003e\n\u003cli data-section-id=\"wgw4vk\" data-start=\"947\" data-end=\"1186\"\u003e\n\u003cstrong data-start=\"949\" data-end=\"979\"\u003eSupports vehicle features:\u003c\/strong\u003e Because the pedal is electronic in most vehicles, it can work with systems such as:\n\u003cul data-start=\"1066\" data-end=\"1186\"\u003e\n\u003cli data-section-id=\"1biw510\" data-start=\"1066\" data-end=\"1082\"\u003eCruise control\u003c\/li\u003e\n\u003cli data-section-id=\"jfc6qf\" data-start=\"1085\" data-end=\"1103\"\u003eTraction control\u003c\/li\u003e\n\u003cli data-section-id=\"6vch62\" data-start=\"1106\" data-end=\"1125\"\u003eStability control\u003c\/li\u003e\n\u003cli data-section-id=\"1w4wwsu\" data-start=\"1128\" data-end=\"1153\"\u003eAdaptive cruise control\u003c\/li\u003e\n\u003cli data-section-id=\"1a8dlx2\" data-start=\"1156\" data-end=\"1186\"\u003eAutomatic start-stop systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Throttle Pedal D21-6005: \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003col data-start=\"286\" data-end=\"1308\"\u003e\n\u003cli data-section-id=\"1d0nmk2\" data-start=\"286\" data-end=\"400\"\u003e\n\u003cstrong data-start=\"289\" data-end=\"321\"\u003ePoor or delayed acceleration\u003c\/strong\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003cul data-start=\"325\" data-end=\"400\"\u003e\n\u003cli data-section-id=\"x43v66\" data-start=\"325\" data-end=\"400\"\u003eYou press the accelerator, but the vehicle responds slowly or not at all.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13fkfdj\" data-start=\"402\" data-end=\"565\"\u003e\n\u003cstrong data-start=\"405\" data-end=\"441\"\u003eReduced engine power (Limp Mode)\u003c\/strong\u003e\n\u003cul data-start=\"445\" data-end=\"565\"\u003e\n\u003cli data-section-id=\"t9gh0h\" data-start=\"445\" data-end=\"497\"\u003eThe vehicle limits engine power to protect itself.\u003c\/li\u003e\n\u003cli data-section-id=\"1kohe4g\" data-start=\"501\" data-end=\"565\"\u003eYou may see a \"Reduced Engine Power\" message on the dashboard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1cbhpv5\" data-start=\"567\" data-end=\"692\"\u003e\n\u003cstrong data-start=\"570\" data-end=\"599\"\u003eInconsistent acceleration\u003c\/strong\u003e\n\u003cul data-start=\"603\" data-end=\"692\"\u003e\n\u003cli data-section-id=\"1ygkktf\" data-start=\"603\" data-end=\"692\"\u003eThe vehicle accelerates unevenly or surges even though you're holding the pedal steady.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"twjti3\" data-start=\"694\" data-end=\"798\"\u003e\n\u003cstrong data-start=\"697\" data-end=\"733\"\u003eNo response from the accelerator\u003c\/strong\u003e\n\u003cul data-start=\"737\" data-end=\"798\"\u003e\n\u003cli data-section-id=\"1b4wu35\" data-start=\"737\" data-end=\"798\"\u003ePressing the pedal has little or no effect on engine speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1d00gto\" data-start=\"800\" data-end=\"933\"\u003e\n\u003cstrong data-start=\"803\" data-end=\"825\"\u003eCheck Engine Light\u003c\/strong\u003e\n\u003cul data-start=\"829\" data-end=\"933\"\u003e\n\u003cli data-section-id=\"10nk8iz\" data-start=\"829\" data-end=\"933\"\u003eThe ECM detects an abnormal signal from the accelerator pedal position sensor and stores a fault code.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1eai84n\" data-start=\"935\" data-end=\"1049\"\u003e\n\u003cstrong data-start=\"938\" data-end=\"959\"\u003eEngine hesitation\u003c\/strong\u003e\n\u003cul data-start=\"963\" data-end=\"1049\"\u003e\n\u003cli data-section-id=\"1mq8eed\" data-start=\"963\" data-end=\"1049\"\u003eThe engine hesitates or stumbles when you try to accelerate, especially from a stop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x9g7ov\" data-start=\"1051\" data-end=\"1184\"\u003e\n\u003cstrong data-start=\"1054\" data-end=\"1086\"\u003eCruise control stops working\u003c\/strong\u003e\n\u003cul data-start=\"1090\" data-end=\"1184\"\u003e\n\u003cli data-section-id=\"1nzulze\" data-start=\"1090\" data-end=\"1184\"\u003eCruise control may be disabled because the vehicle cannot reliably determine pedal position.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"11acsay\" data-start=\"1186\" data-end=\"1308\"\u003e\n\u003cstrong data-start=\"1189\" data-end=\"1221\"\u003eDifficulty maintaining speed\u003c\/strong\u003e\n\u003cul data-start=\"1225\" data-end=\"1308\"\u003e\n\u003cli data-section-id=\"139il5n\" data-start=\"1225\" data-end=\"1308\"\u003eThe vehicle may unexpectedly lose power or have trouble keeping a constant speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-section-id=\"2offwk\" data-start=\"1310\" data-end=\"1352\"\u003e\u003cstrong\u003eCommon diagnostic trouble codes (DTCs)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1354\" data-end=\"1389\"\u003eA scan tool may show codes such as:\u003c\/p\u003e\n\u003cul data-start=\"1390\" data-end=\"1713\"\u003e\n\u003cli data-section-id=\"1wdo7vz\" data-start=\"1390\" data-end=\"1453\"\u003e\n\u003cstrong data-start=\"1392\" data-end=\"1401\"\u003eP2122\u003c\/strong\u003e – Accelerator Pedal Position Sensor \"D\" Circuit Low\u003c\/li\u003e\n\u003cli data-section-id=\"1enfql0\" data-start=\"1454\" data-end=\"1518\"\u003e\n\u003cstrong data-start=\"1456\" data-end=\"1465\"\u003eP2123\u003c\/strong\u003e – Accelerator Pedal Position Sensor \"D\" Circuit High\u003c\/li\u003e\n\u003cli data-section-id=\"1nt49aj\" data-start=\"1519\" data-end=\"1582\"\u003e\n\u003cstrong data-start=\"1521\" data-end=\"1530\"\u003eP2127\u003c\/strong\u003e – Accelerator Pedal Position Sensor \"E\" Circuit Low\u003c\/li\u003e\n\u003cli data-section-id=\"243vb2\" data-start=\"1583\" data-end=\"1647\"\u003e\n\u003cstrong data-start=\"1585\" data-end=\"1594\"\u003eP2128\u003c\/strong\u003e – Accelerator Pedal Position Sensor \"E\" Circuit High\u003c\/li\u003e\n\u003cli data-section-id=\"1a6gis5\" data-start=\"1648\" data-end=\"1713\"\u003e\n\u003cstrong data-start=\"1650\" data-end=\"1659\"\u003eP2138\u003c\/strong\u003e – Accelerator Pedal Position Sensor correlation fault\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAbout the Manufacturer – \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCummins:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"381\" data-start=\"0\"\u003eCummins is a leading American manufacturer of diesel and natural gas engines, as well as power generation systems and emissions solutions. Founded in 1919 and headquartered in Columbus, Indiana, Cummins is known globally for its durable, high-performance engines used in trucks, buses, construction equipment, agriculture, and power systems.\u003c\/p\u003e\n\u003cp data-end=\"628\" data-start=\"383\"\u003eThe brand is widely respected for its innovation in clean diesel technology, including aftertreatment systems, turbochargers, and advanced electronics that help reduce emissions while maximizing engine efficiency and reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Paccar","offers":[{"title":"Default Title","offer_id":50935869604087,"sku":"D21-6005","price":1433.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/2026-07-14004636.png?v=1783979249","url":"https:\/\/forcetruckparts.com\/products\/d21-6005-genuine-paccar%c2%ae-throttle-pedal-assembly","provider":"Force Truck Parts","version":"1.0","type":"link"}