Bmw code po52b

When the Engine Computer detects a problem, it sets a diagnostic fault code and turns the Check Engine light on to tell you. The place to start is by reading that code. Cycle the ignition switch three times within five seconds from "off" to "run" without cranking the engine, leave it in "run", then watch the code numbers show up in the odometer display. There's over a thousand potential fault codes but only those that could adversely affect emissions must turn the Check Engine light on. When the light is off the next time you start the engine, that means it's an intermittent problem and it has the second lowest level of severity. You still do not want to ignore it though because sometimes minor problems can become serious.

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You have several systems that it could be responsible. You have a "cold start" routine which is suppose to make the engine run faster when warming up. There are limits to how fast.

Second, if you have the DOHC engine, the 4.6L, there were parts called cam phasers which adjust each side of the engines' timing. The phasers can act up and if one phaser is gummed up it will not match the performance of the other. This could be an early indication of bigger problems. But a product like Resilone and an oil change after maybe 500 miles may help. Use at least a blend of synthetic oil for permanent lube.

There are other potential problems but the trouble light should activate. I am thinking that O2 sensors have heaters which are meant to shorten the time the engine is at high idle. But no code is present.

The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.

sounds like an engine management fault it will need to go on a computer

Your oil is a little low, and the timing may be off a bit but if it smooths out after warm it is probably ljust
low oil.

When the "Check Engine" light comes on in the 1997 BMW 328iC, the problem is 99% Emissions Systems. First thing to check are the Four (4) Oxygen Sensors. That is correct your convertible has four O2 sensors. They are about $100 to $118 each, online.

I have done this procedure it is not a big deal. It just requires four sensors. More than likely you and your car experience one or several of the following:

• Engine will not accelerate and backfires
• Check Engine light is illuminated
• Irregular idle during warm-up
• Irregular idle with warm engine
• Poor engine performance
• Fuel consumption is high
• Driving performance is weak

The O2 sensors reduce emissions and tells the computer how to mix your gasoline to air mixture going into your engine.

Since you say you have a 328, they have either two or four O2 sensors. The 1997 BMW 328 Convertible has four. Your chassis style is also referred to as a E36 series. Your engine is a 6 cyl M52.

Good luck

Ralph

I had the same issue with my 2000 528i. You more than likely need to have the Vanos seals replaced. BMW will tell you that the Vanos unit needs to be replaced but the problem is more than likely isolated to the OEM seals that shipped with the Vanos. This issue has been reported by several BMW owners. This issue has been thoroughly documented and reported to BMW in an effort to seek a corrective fix. Since BMW failed to address the problem, the guys that investigated the issue started their own company providing superior Vanos seals to the deficient OEM Vanos seals.

The company is Beisan Systems, LLC. I ordered their Vanos seal kit and had them installed at a local BMW performance shop for less than half of what BMW wanted to charge me for a Vanos replacement with the same faulty seals. Besian also provides step-by-step DIY instructions; if you have the time.

http://www.beisansystems.com/index.html

Good Luck.

The secondary air pump runs for about 2 minutes when you start the car cold. It pumps some exhaust air back into the chamber to re-burn in order to reduce emmissions. Your pump is probably working fine, but there is most likely carbon buildup in the cylinder head where the air reenters (not in the combustion chamber). This issue should not affect your engine performance, and Powerchip apparently has an ECU update which ignores this error. Many posts on this. This thread should help