Bosch Booklet 17 May 2026

The famous "searching idle" on the Bosch VP37 pump. Generic VCDS (VAG-COM) logs suggest replacing the injection quantity adjuster (N108). But Booklet 17 reveals that the N108 is rarely the fault. Instead, it provides a multimeter procedure for the fuel temperature sensor that is reverse-logic (resistance goes up as fuel heats, unlike coolant sensors). Most mechanics reverse this. Booklet 17 gives the correct thermistor curve.

To understand the value of Bosch Booklet 17, you must understand the era. In the late 1960s and 1970s, the automotive world was transitioning from carburetors to fuel injection. bosch booklet 17

Repair manuals of the time were rudimentary. They told you what to replace, but rarely how the system worked. Bosch Booklet 17 changed that. It contained: The famous "searching idle" on the Bosch VP37 pump

For a mechanic in 1975, having Bosch Booklet 17 in their toolbox was like having a direct line to the engineers in Stuttgart. Repair manuals of the time were rudimentary

Let’s look at some actual data points that make this booklet invaluable. While we cannot reprint the entire document due to copyright, here are the types of "golden nuggets" it contains:

Bosch stopped printing Booklet 17 in the early 1980s as Motronic took over. Original copies are printed on thin, brittle paper with a staple binding. A mint condition original Bosch Booklet 17 can sell for over $150 USD today—not because of nostalgia, but because the high-resolution diagrams have never been fully replicated online.

While different editions exist (some focus purely on D-Jetronic, others on K-Jetronic basics), a genuine Bosch Booklet 17 typically includes the following critical sections: