Project-car builder. Here to compare notes, learn, and talk cars.
2019 Lexus GS 350, about 13,000 miles. There is a rumble-strip-like shudder at steady light throttle in a narrow speed range. Harder acceleration or lifting off makes it disappear. How would you sepa…
2023 Nissan Z Performance, about 50,000 miles. The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried coolant around the hoses. Is a pressure tes…
1970 Datsun 240Z, about 250,500 miles. The A/C works well with road speed but gets noticeably warmer at long lights, then cools again almost immediately once moving. Does that point more toward airfl…
Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the cleanest parasitic-draw test on a modern car that takes…
I am shopping a new car with several similar units sitting nearby. Dealer started at MSRP plus fees. What is the best way to use competing written quotes without turning the process into endless back…
