Lh jetronic pdf writer

Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. As stated in the video, you have access to all measures of the original software. Bosch le jetronic bmw copyright equiptech boschlejetronic thereismuchconfusionabouttheactualtypeofinjectionsystemfittedtomanybmwmotorcarsduringtheperiod1980to. Left and right are always as seen from the drivers seatas you sit in the car. While new carburated engines were used in the european. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed. The other manuals wiring diagrams looked like a fractal surface the closer you. Bosch l jetronic l jetronic rx7 brought to you by the team at created date. Possibly the intake port need to disable and plug the cold start injector. Djet was the evolutionary base for some of the gm delco systems that use a map sensor to determine engine load. The most common cause of lh jetronic ecu failure for the 2nd lh 2. Its a pretty general section, but very useful for servicing your volvo 240 or 260 with the right maintenance schedule. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle lh jetronic 0 280 000572, the white label.

System overview 18 fuel system 20 operatingdata acquisition 28 operatingdata processing 38 operating conditions 42 integrated diagnosis 58. The peugeot 505 is a large family car produced by the french manufacturer peugeot from 1979 to 1992 in sochaux, france. Now im not sure because i havent tried it but i would imagine if one were to install the lh2. The lhjetronic was mostly used by scandinavian car manufacturers, and by sports and luxury cars. Or lets have a look at one more version bosch cise continuous injection system electronic. Some later post1995 versions contain hardware support for first generation diagnostics according to iso 9141 a. I am writing this article specifically from the point of view of a u. L jetronic is a boschmanufactured electronic fuel injection featured on many early 80s cars. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle jetronic.

Mono jetronic fuelinjection system system overview mono jetronic is an electronically controlled, lowpressure, singlepoint injection spi system for 4cylinder engines. Chapter 8 of djetronic article series by drdjet describes fuelpump and pressure regulator djetronic chapter 11. Its more fun to work on a clean motor than a greasy one. Vw l jetronic fuel injection workshop manual author. Bosch l jetronic fuel injection troubleshooting, maintenance. Before troubleshooting, testing or adjusting the k jetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. The djetronic system measures incoming airflow by monitoring. Editor in my case, my 556 ecu vintage 1990 failed in such a way that the.

The basic l jetronic consists of a fuel pump,fuel filter, fuel lines, fuel regulator, fuel injectors, coldstart injector could be omitted on some ls, thermotime switch, coolant temperature sensor, auxiliary air valve, throttle plate and an airflow sensor flap type in analog ls discussed here. The bosch djetronic electronic fuel injection system is composed of 3 major subsystems. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed and marketed by robert bosch gmbh from the 1960s onwards. Ljetronic system throttle and idle control n throttle opens to allow more air to sucked in to engine n small amount of air bypasses the throttle so the engine gets air and will idle. Djet was the evolutionary base for some of the gm delco systems that use a map. New design incorporates anodized bottle with permanent laser etching for a sleeker appearance.

Gtv6 and milano, however if you own any car with bosch ljetronic injection the article will still. Vw l jetronic fuel injection workshop manual created date. All data required to make the test system operate are stored on the software cassette. How can i tell which version of bosch lh fuel injection is. Since their introduction, jetronic fuel injection systems have proved them selves millions of times over under. By club member john hall, who worked for volvo usa for many years. Vw ljetronic fuel injection workshop manual author. Jun 08, 2012 this video shows how to engineer modelbased functions for the lh jetronic 2. Ljetronic fuel injection technical troubleshooting article. New design reduces potential damage by separating the gauges and manifold from the canister during filling. The le jetronic command unit receives various input signals, from the various sensors that send precise information about the instant engine operation conditions. This event propelled me to write diagnosing nostarts on some 740940 volvos. Jetronic, lhjetronic, and motronic as an integrated engine management system.

System overview 18 fuel system 20 operatingdata acquisition 28 operatingdata processing 38 operating conditions 42 integrated diagnosis 58 electronic control unit ecu 62 interfaces to other systems 64 mmotronic engine management modern electronics are opening up new perspectives in automotive design. In this group you can find info about the service interval, checklists and which oil and other lubrication is needed for your volvo 240 or 260. Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. Before troubleshooting, testing or adjusting the k.

L jetronic system fuel injectors n open when energized by ecu not continuous as k jetronic. A thorough understanding of the various components is required before working on k jetronic fuel systems. A thorough understanding of the various components is required before working on kjetronic fuel systems. With the engine at normal operating temperature, set the. Product information automotive gasoline systems diagnostics and. Monojetronic fuelinjection system system overview monojetronic is an electronically controlled, lowpressure, singlepoint injection spi system for 4cylinder engines. The ezk ignition module from the same car as the lh jet 572 the whole harness from the lh jet and exk modules into the engine bay. Ljetronic, lhjetronic, and the motronic amount of fuel that it actually. Bosch ljetronic l jetronic rx7 brought to you by the team at created date. It was also manufactured in various other countries including argentina by sevel. Butcher author see all formats and editions hide other. Technical troubleshooting article for l jetronic fuel injection. New check valve prevents fluid from backing up through the regulator. New design reduces potential damage by separating the gauges and manifold from the canister during.

Then, the command unit processes this information received and calculate the appropriate fuel injection time, through an electric signal. L jetronic system overview, advantages 12 fuel supply system 14 operatingdata sensing system 17 fuel metering 19 adaptation to operating modes 24 supplementary functions 29 electric circuitry 31 l3 jetronic 32 lh jetronic 35 workshop testing techniques 38 l jetronic since their introduction, jetronic fuelinjection systems have proved them. While new carburated engines were used in the european markets, vw adapted the ljetronic for the type 4 in the us due to more stringent emissions and fuel consumption regulations. K jetronic system overview fuel supply 14 fuel metering 18 adapting to operating conditions 24 supplementary functions 30 exhaustgas treatment 32 electrical circuitry 36 workshop testing techniques 38 k jetronic since its introduction, the k jetronic gasolineinjection system has proved itself in millions of vehicles. Vw ljetronic fuel injection workshop manual created date.

Fuel injection and ignition diagnostic procedures in lhjetronic 2. If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor. Basically, it is pretty similar to the kjetronic with some changes and modifications. The most common cause of lh jetronic ecu failure is the hybrid control circuit. Ljet was the evolutionary base for lh jet, digifant, and motronic. New design reduces damage to the oring by limiting exposure to cleaning solution. Lele2lu a 010902021 9705 1 operation lele2lu jetronic foreword the multitester pluspro software cassette is the component that gives the diagnostic equipment its unique test characteristics.

There seems to be a lot of dissagreement on what the version number is on this early system. It is a socalled hybrid a mixture of mechanical and electronic injection systems. For 16v lhjetronic motors we recommend that you steam clean or power wash your motor before beginning the supercharger installation. The ezk ignition module from the same car as the lhjet 572 the whole harness from the lhjet and exk modules into the. Electronic multipoint injection system initially analog, later digital. Lele2lu a 010902021 9705 1 operation lele2lu jetronic foreword the multitester pluspro software cassette is the component that gives the diagnostic equipment its unique test. Its wide use throughout the industry justifies its coverage in this manual. Gregs bosch l jetronic fuel injection idle adjustment, diagnostic and tune up page, latest revision sept. L jetronic is the term used by bosch to describe a fuel injection system controlled by. Hier wurde auch erstmals ein digitales steuergerat mit mikroprozessor eingesetzt.

Bosch k jetronic fuel injection manual linkedin slideshare. Ljet was the evolutionary base for lhjet, digifant, and motronic. Ac switch system relay pressure regu lator fuel distribution. Disconnect the return line from the distributor head 6a, and connect a hose from the.

First tester for d jetronic of course was developed by bosch and had bosch no. Use caution, the 928 spark system produces high voltage and can cause death or serious injury. Hookup the auxiliary fuel tank and fittings as shown on page 4. The ljetronic is an electronically controlled injection system with. How can i tell which version of bosch lh fuel injection is on.