I am getting this malfunction reading. Should I reset or get it diagnosed by dealer? Can Autozone check it?

You should find out what the trouble code is. Should be an OBDII code, so Autozone may be able to find out what it is. If they don't know what the code means, be sure to write it down and post it here what the code is. I assume the car seems to be running OK?

Gilly

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Gilly,

I will go to Autozone to get code checked. The car is running, but since my wife drives this car, I want to make sure that the car will not stall.

ps: I would also like to discuss "won't start" problem with my 1990 300E, 3.0. I have been posting this problem for about two months & still could not find the solution. May be you can help. How do you e-mail you the problem discription?

Thanks

At the bottom of my posts (and most peoples posts) there is an icon (button) you can click on that says "email", or you can use the "PM" (private message), but I'd rather answer questions here so others can benefit from the discussion.

Gilly

__________________
Click here to see the items I have up for auction at EBay

Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)

Based on my experience with a 98 E320 and other posts regarding E320's, a check engine electronics message usually has been the cause of a mass air flow sensor going bad.

But as Gilly as suggested get the codes to verify the cause of the check electronics message.

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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles

Is the gas cap tightly on the car? check that first.

Then, read the code. The $200 scanner will tell you a code and message instead of just a code alone. Replace the sensor and drive happy.

1998 E320

Gilly,

Autozone checked the codes. These are: 0170 ( Fuel trim malfuction,bank 1) and 0173 ( fuel trim malfunction bank 2). The car does not seem to have problem in running.

What do these codes mean in terms of hardware? Please let me know. Thanks

Usually means a bad Air Mass meter. There are real tests and adaptation numbers available with proper tools. That code means the ability to adapt has reached the end of range. There are two forms of adaptation involved and the first step would be to look at the numbers and see which is at the end of range. turns out that unless you have a vacuum leak or low fuel pressure, you most likely need an AMM.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

Gilly,

Thanks. How big a job is this? Approximate replacement cost of air flow meter. By the way, last year, dealer replaced fuel pump under extended warranty. Is this problem related to that? Of, course, the warranty expired now.

Steve,

Sorry, I didn't notice that you replied to my question. By mistake I addressed to Gilly. I would appreeciate your input.

Also, I have been posting question regarding my 1990 300E "won't start" problem. The car cranks but won't start. I have replaced cap,rotor, accumulator. Dealer told me to replace cap & rotor. Now he is saying to replace FD. MAS & OVP are working. Previously, car will run when I add fuel in air intake. But, per dealer recommendation, I opened top of FD, checked plunger and sprayed WD-40. Now, the car cranks, but won't stay running when I add fuel to air intake.

Thanks