2018 Toyota Tacoma: sudden loss of power

Filed Oct 6, 2026 · Engine, Fuel system · TN

2018 Toyota Tacoma SR 4WD Double Cab, 3.5L V6 (2GR-FKS). At about 87,000 miles the check engine light came on with code P11EC, Cylinder 1 Air-Fuel Ratio Imbalance (Port). Cylinder 1 failed compression. Leakdown and coolant tests had passed earlier; borescope did not show heavy scoring. The Toyota dealer said replacing the direct injectors would fix compression (quote about $4,499). After the dealer injector repair, cylinder 1 was still 124 psi (spec about 142-180 psi), so it did not fix compression. The dealer then quoted $11,778 for a short block (+$500 incidentals) and $14,238 for an engine assembly that was not new (about 45,000 miles on the replacement discussed); adding injectors again put the short-block path at about $16,278. I was steered toward buying a new truck and had the injector work reversed because it did not fix what they said it would. Toyota Brand Engagement Center reviewed the case, called the dealer, took VINs for other Toyotas, and denied goodwill; no recall or TSB. An independent shop later pulled the engine and found the cylinder 1 exhaust valves leaking badly; cylinder wall still looked good. Machine shop valve job, new rings, injectors tested (two bad), all six replaced; repair about $8,000. Truck runs normally after. Consequences: loss of power, failed emissions monitors, risk of further engine damage if driven, high repair cost. Not a crash. This appears to be a known pattern on the 2GR-FKS in 2016-2019 Tacomas (P11EC, cylinder 1, leaking/burnt exhaust valves, often after direct-injector washdown). Toyota has not recalled; dealers stop at injectors or quote a short block/used engine, and owners pay out of warranty. Please log this under 2018 Toyota Tacoma: engine, fuel system, and valve train (cylinder head/exhaust valves, fuel injectors), so the pattern is on record. Servicing dealer: Nashville Toyota North. Toyota Brand Engagement case 260521000967.

Filed Apr 2, 2026 · Brakes · NY

The vacuum pump. This vehicle was inspected by Dunn Tire. Yes, the vehicle is available for inspection. The safety issue that occurs is the loss of power assist to your brake system, and if not repaired, can impact the camshaft or the oiling system. (Please see attachment).

Filed Jul 10, 2025 · Fuel system · TX

On June 26, 2025, around 9:30 AM, I was driving my Tacoma on the highway at approximately 70 mph when the truck suddenly lost power. I was in the center lane and nearly got hit as I tried to exit the highway. After exiting, the engine warning light came on, and the truck eventually stalled. I was able to restart it with limited power and drove it to a nearby shop. The shop's diagnosis revealed several warning codes, and the fuel pressure was found to be only 14 psi. They recommended replacing the low-pressure fuel pump. After researching known fuel pump issues, I had the truck towed to a local Toyota dealership. The dealership confirmed the codes but couldn’t replicate the low-pressure reading after driving for about 30 miles. Because of this, they stated that it didn’t qualify for the extended recall offered by Toyota. Toyota refused to replace the pump, arguing that the recall had already been performed in 2020 and that the low pressure reading came from a non-Toyota repair shop. My response was: how can they be sure that the pump replaced under the recall wasn’t faulty as well? No answer In the end, I had no choice but to cover the repair costs myself. However, I made sure to get the old pump back from the dealership and documented its manufacturing details to support my claim moving forward.

Filed Dec 14, 2023 · Driver assistance, Electrical · PR

Display a message in screen "Pre-Collision System Malfunction", lost power and start blinking light in cluster

Filed Jan 19, 2021 · Engine, Fuel system · 19,000 miles · MA

Driving vehicle on a side street going approx 20 miles per hour . Car started shaking and lost majority of power. Was able to get car back to residence (only got a couple of blocks away) when heading to destination. Had vehicle towed next day to same dealership who had recently replaced fuel pump under a recall (paperwork for this recall is what was experienced /stalling dangers) . Dealership told us not fuel pump but wiring harness needed replacement because rodents ate the wiring ( soy bean covering on newer vehicles )and engine lost power because of this . Thank goodness not on a highway going 75 MPH. When this happened as we very well could of been . Told we need to deter these rodents from continuing any more damage . Wonder why company would use a product . Thank you.

Filed Aug 18, 2020 · Fuel system, Lights · 383,565 miles · GA

As we were traveling on 441 south to athens georgia to doctor my 2018 toyota tocoma with VIN# on file lost power at the speed of 65 MPH and if I had not been a former sheriff deputy and a special investigator and had not been train in how to handel a vehicle in stress it would have been tragically devastated for my wife and myself this remedy that's under recall needs to be taken care of asap or owners should be reimbursed or giving another vehicle before there is a death reported!!! My contact 407 577 5262 or [email protected]

Filed Jul 29, 2020 · Acceleration, Engine · 17,500 miles · NC

On several occasions my car has lost power and started idling very low in traffic. There has been an open recall for several months for this problem and toyota has not fixed it.

Filed May 12, 2020 · Fuel system · NY

Tl* the contact owns a 2018 toyota tacoma. The contact received notification of the federal safety agency campaign number: 20v012000 (fuel system, gasoline) however, the part needed for the repair was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. Js huntington motors (370 oakwood rd, huntington station, ny 11746, (631) 271-6212) was contacted and confirmed that the part was not available. The manufacturer was contacted and made aware of the issue. The contact had not experienced a failure. Vin tool confirms parts not available. *ln consumer stated vehicle was continuously stalling without warning causing a loss of power steering.*jb*dt

Filed Jan 30, 2020 · Acceleration, Fuel system · 48,000 miles · AL

My 2018 tacoma had a check engine light come on, then the trac light came on. Cruise control quit working and engine runs rough. When driving, vehicle begins to lose acceleration and check engine light begins flashing. When idling, engine runs with with a miss, and when driving, at lower speeds the vehicle shudders as if its losing power.

Filed Nov 13, 2019 · Engine, Transmission · 5,000 miles · NC

Vehicle exhibits a stumbling condition and loss of power when applying heavy throttle to accelerate from a stop or slow vehicle speeds. While driving under moderate throttle at approx. 45-60mph the vehicles engine feels as if it is misfiring and not running on all cylinders with a heavy delay in throttle response when the throttle is applied to increase vehicle speed. Issue has been brought up with multiple toyota dealerships and also with toyota corp customer service. There is a software flash to correct this issue but toyota refuses to offer it to customer with manual transmissions because their tsb's do not list that manual trans. There is a 145 page forum thread regarding this issue where customers are resorting to flashing their trucks on their own to avoid the dangerous driving condition these trucks are exhibiting. Here is a link to the thread: https://www.tacomaworld.com/threads/software-update-for-the-manual.562550/ tsb 1 listing condition: https://toyotatalk.com/wp-content/uploads/2018/07/tacoma-t-sb-0062-18.pdf tsb 2 listing condition: https://toyotatalk.com/wp-content/uploads/2018/07/tacoma-t-sb-0058-18.pdf