Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

OT-E30 Question


Recommended Posts


My '87 325 (automatic) hesitates when cold and at times when I need the power in the express way.

I've seen posts on a E30 board with the same problem and they suggest the culprit could be the C191plug (dirty) and/or the potentiometer of the AFM?

Where are these parts located so I can check?



PD: I posted asking this but I haven't received any answer yet.

SOLD - 1974 Automatic Sienabraun Metallic

Link to comment
Share on other sites

the AFM is the Air-Flow meter. It is located on the air box inboard of the filter... the ribbed alluminum box with the arc on the top and a black cover. on the side Read up on testing the AFM

The C191 plug is the fuel injection harness plug.

Make it different... or just do it differently

Bill in Petaluma, CA

1969 1600 supercharged m20 in progress

1970 2002 RIP -- crashed then quartered

1971 2002 M20/02 RIP -- nothing but pieces now

1972 2002 gone, but not missed POS

Link to comment
Share on other sites

I couldn't tell from your post whether this problem only occurs when the motor is cold. A defective throttle position sensor (switch) can cause a problem like this; a defective switch is a bit more noticeable when the motor is cold.

Chris B.

'73 ex-Malaga

Link to comment
Share on other sites

Cuz it's cheap and easy. If that doesn't help, the FI harness plug is on the drivers side of the engine, directl below the throttle body. Usually, the gasket on the small coolant housing on the side of the throttle body leaks. The coolant drips right on the connector and corrodes the contacts.

But if it is only when cold, that temp sensor is a good bet.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

  • Create New...