1990 Bmw 735 problems

General information about Bmw-735
Overview of popular issues
Analysis of common problems
Сomplaints list
Recalls list

The BMW 7 Series is a full-size luxury sedan manufactured and marketed by the German automaker BMW since 1977. It is the successor to the BMW E3 "New Six" sedan and is now in its seventh generation.

The 7 Series is BMW's flagship car and is only available in a sedan bodystyle (including long wheelbase and limousine models). It traditionally introduces technologies and exterior design themes before other models in BMW's lineup.

The first generation of the 7 Series was powered by straight-6 petrol engines, and following generations have been powered by inline-4, straight-6, V8 and V12 engines with both natural aspiration and turbocharging. Since 1995, diesel engines have been optional in the 7 Series.

Unlike the 3 Series and 5 Series sedans, BMW does not offer a full M model, but once offered an M performance variant, the BMW M760 with its 6.6L V12 (at the time the most powerful BMW ever made, not to be confused with BMW 760 6.6 V12 which does not offer the same performance). The Alpina B7 (G12) served as the high-performance variant of the 7 Series.

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Common 1990 Bmw 735 problems

The BMW 735i of the E23 generation, produced from 1977 to 1986, is known for several common issues that owners have reported. These problems span across various components of the car, including the engine, cooling system, fuel injection system, automatic transmission, suspension, and electrical system.

One of the most common issues with the BMW 735i engine is with the valvetrain, specifically the hydraulic lifters. These lifters can fail, resulting in a ticking or tapping noise from the engine. This issue can be caused by sludge buildup in the engine, which can prevent the lifters from properly pumping up. Regular oil changes and the use of high-quality synthetic oil can help prevent this problem.

The cylinder head is another component that can cause issues with the BMW 735i engine. The cylinder head gasket can fail, causing oil leaks and overheating issues. The cylinder head itself can also crack, causing similar issues. This can be caused by overheating, which can be prevented by regular cooling system maintenance and attention to any signs of overheating.

The timing chain is another component that can cause issues with the BMW 735i engine. The timing chain tensioner can fail, causing the chain to become loose and skip teeth on the timing gears. This can cause serious engine damage, so it is important to address any signs of chain noise or issues with the timing system promptly.

The BMW 735i engine has also been known to consume oil, particularly in older models. This can be caused by worn piston rings, valve seals, or other engine components. Regular oil changes and the use of high-quality synthetic oil can help mitigate this issue, but it may also require engine repairs to fully address the issue.

The cooling system has been a persistent issue throughout the production of the BMW 735i. Early models, particularly those from 1977 to 1979, were known for issues with the aluminum radiators, which were prone to cracking. The plastic thermostat housing was also known to fail, causing coolant leaks. The water pump was also a weak point, and failure could lead to overheating and engine damage. Later models, from 1980 to 1982, saw improvements to the cooling system, but new issues arose with the fuel injection system. The Bosch L-Jetronic system was known to have problems with the air flow meter, which could cause the engine to run poorly or stall. The fuel injectors were also prone to clogging, which could lead to a loss of power or rough running.

The automatic transmission has also been a source of issues for the BMW 735i. Owners have reported harsh shifting and slipping, particularly in models from 1983 to 1986. Suspension components, including ball joints and control arm bushings, were also known to wear out quickly and require replacement in these models.

The electrical system of the BMW 735i, particularly in later models, has also been a source of issues. Problems with lighting, driving, and interior components have been reported, as well as issues with the cluster and fuel door hinge. These issues can be caused by corrosion and wear over time, and can be addressed with cleaning and replacement of components as needed

In summary, the BMW 735i of the E23 generation, while a reliable and enjoyable car to own and drive, has a number of common issues that owners should be aware of. These issues span across various components of the car, including the engine, cooling system, fuel injection system, automatic transmission, suspension, and electrical system. Regular maintenance and attention to any signs of issues can help prevent and address these problems, ensuring that the BMW 735i remains a reliable and enjoyable car to own and drive.

What is the top speed of a BMW 735?

Models

Model	Engine	Top Speed
730i	M60B30 V8	230 km/h (143 mph) (AT) 233 km/h (145 mph) (MT)
735i	M30B35 I6	225 km/h (140 mph) (AT) 232 km/h (144 mph) (MT)
227 km/h (141 mph) (AT) 235 km/h (146 mph) (MT)
740i	M60B40 V8	240 km/h (149 mph)**

How much does a BMW 735 weight?

BMW E38 7 Series 735i Size, Dimensions, Aerodynamics and Weight
Width :	73.31 inches / 186.2 cm
Height :	56.5 inches / 143.5 cm
Aerodynamic drag coefficient - Cx :	0.3
Curb Weight :	3847 lbs / 1745 kg

What is the fastest BMW ever?

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What was the fastest BMW?

BMW Fastest Cars: BMW M Series

M2 Competition Coupe: 0-60 mph in 4.0 seconds.
M3 Sedan: 0-60 mph in 3.9 seconds.
M4 Coupe: 0-60 mph in 3.8 seconds with Competition Package.
M5 Competition: 0-60 mph in 3.1 seconds.
M6 Gran Coupe: 0-60 mph in 4.1 seconds.
X5 M: 0-60 mph in 4.0 seconds.
X6 M: 0-60 mph in 4.0 seconds.

What are the most common problems with BMW 7 Series?

BMW 7 Series Common Problems and Solutions

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Air conditioning failure. Problem: ...
Door locks failure. Problem:

How much horsepower does a BMW 735 have?

7 Series Sedan 735i M Sport Performance

7 Series Sedan 735i M Sport 2998 cc engine offers 286 hp of power and 400 Nm of torque.

Are 2017 BMW 740i reliable?

The 2017 7 Series has an above-average predicted reliability rating of 3.5 out of five from J.D. Power.

Which year 7 Series is most reliable?

If you stick with the newest used years, the BMW 7 Series is a reliable choice. We recommend the 2017, 2019, 2020, 2021, and 2022 options for your investment. We hope this information was valuable!

1990 Bmw 735 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Bmw 735 problems, we found that the most common problems with these 2023 model year vehicles are:

Engine and engine cooling problems
Vehicle speed control problems
Steering problems

The graph below shows statistics for all 1990 Bmw 735 vehicle components and the number of complaints received.

1990 Bmw 735 complaints

The NHTSA has received 3 complaints about various vehicle components related to the 1990 Bmw 735.

1996-09-17

ENGINE AND ENGINE COOLING PROBLEM

Date Of Incident: 1996-09-03
VIN: WBAGC4314LD
Components: ENGINE AND ENGINE COOLING
Summary: CONSUMER STATES THAT HE WENT TO CHECK THE OIL IN THE ENGINE AND THE RADIATOR HOSE EXPLODED AND GAVE HIM 2ND AND 3RD DEGREE BURNS.*AK

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1995-09-29

VEHICLE SPEED CONTROL PROBLEM

Date Of Incident: 1995-08-25
Crash: 1
VIN: WBAGB4313LD
Components: VEHICLE SPEED CONTROL
Summary: VEHICLE PARKED; TURNED ON IGNITION; SHIFTED FROM PARK TO REVERSE; ENGINE ACCELERATED; VEHICLE LURCHED BACKWARDS FULL SPEED; WENT INTO WOODED AREA ACROSS STREET.

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1995-03-10

STEERING PROBLEM

Date Of Incident: 1994-12-01
Components: STEERING
Summary: STEERING BOX HAS TO BE REPLACED, POWER STEERING CUTS OUT. TT

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1990 Bmw 735 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 1990 Bmw 735.

1994-04-11

Manufacturer: BAYERISCHE MOTOREN WERKE
Components: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Summary: FEED FUEL HOSES CAN HARDEN AND "SET" OVER TIME, ALLOWING A SEEPAGE OF FUEL AT THE CONNECTION BETWEEN THE HOSE AND THE ENGINE FITTING. THE CLAMP USED TO HOLD THE HOSE TO THE FITTING IS UNABLE TO COMPENSATE FOR THE HARDENING OF THE FEED FUEL HOSE.
Consequence: FUEL SEEPAGE BETWEEN THE FEED FUEL HOSE AND THE ENGINE FITTING CAN RESULT IN FREE FUEL IN THE ENGINE COMPARTMENT, WHICH COULD RESULT IN A FIRE WHEN EXPOSED TO A SOURCE OF IGNITION.
Remedy: A REDESIGNED FEED FUEL HOSE AND HOSE CLAMP WILL BE INSTALLED TO ALLEVIATE THE FUEL SEEPAGE.

1990-01-30

Manufacturer: BAYERISCHE MOTOREN WERKE
Components: SEAT BELTS:FRONT:BUCKLE ASSEMBLY
Summary: UNDER CERTAIN CONDITIONS, FRONT SEAT CENTER, FOLD-DOWN ARM REST MAY CONTACT THE SAFETY BELT BUCKLE, CAUSING DAMAGE TO THE RELEASE BUTTON AND PREVENTING THE BELT TONGUE FROM LATCHING WHEN BUCKLING UP.
Consequence: OCCUPANT WOULD NOT BE PROPERLY RESTRAINED AND COULD BE INJURED IN THE EVENT OF A SUDDEN STOP OR ACCIDENT.
Remedy: REPLACE FRONT SEAT SAFETY BELT BUCKLES WITH SHORTER VERSION THAT WILL NOT CONTACT THE ARMRESTS. NOTE: OWNER NOTIFICATION DATE; 2/90 IS PREPARED IN DRAFT FORM.

Additional sources

More sources of information about 1990 Bmw 735 problems:

Restoring 1990 BMW 735iL pics and problems..

https://www.bimmerforums.com/forum/showthread.php?1802989-Restoring-1990-BMW-735iL-pics-and-problems

Mar 10, 2012 ... Was in the market for a nice looking car that I can customize and tune to my likings. Called a Craigslist add selling this 1990 735il with 110k ...

1990 BMW 735iL Repair: Service and Maintenance Cost

https://repairpal.com/cars/bmw/735il/1990

The front thrust rod bushings — also referred to as tension strut bushings — are known to fail occasionally. the... See More 1990 BMW 735iL Problems ...

Reliability on E32 750il

https://www.bimmerforums.com/forum/showthread.php?1232840-Reliability-on-E32-750il

May 15, 2009 ... If I didn't scare ya, good luck, they are nice cars and addicting, ask anyone here. Make sure you have a full wallet though. 1990 BMW 750iL ...