Hummm...major heartburn.... - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 09-04-2013, 07:34 PM
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Hummm...major heartburn....

Need some advice....

Own 1991 318IC. 1.8L. E-30.

Car will crank, start--then dies....

Checked MAF...Fuel pump relay...OK...
Replaced Fuel Pump Assembly. Gas flows & pressure is good.


What's the next few steps....?

It almost seems as some "Immobilizer" kicks in, and the car shuts down...!


Please advise.

TIA.
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#2 (permalink) Old 09-06-2013, 09:03 PM
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Quote:
Originally Posted by drcrougeux View Post
Need some advice....

Own 1991 318IC. 1.8L. E-30.

Car will crank, start--then dies....

Checked MAF...Fuel pump relay...OK...
Replaced Fuel Pump Assembly. Gas flows & pressure is good.


What's the next few steps....?

It almost seems as some "Immobilizer" kicks in, and the car shuts down...!


Please advise.

TIA.
When you checked that mass airflow sensor, did you remember to look at the rubber boot in between the mass airflow and the throttle body? If that is ripped, it wont pull the proper amount of air through and it will make it not work properly. Also check your fuel filter for proper flow. If none of these are the problem, it is most likely a stuck iac valve. Hopefully its stuck. If not, and its burned open, you must replace it and they are NOT cheap to replace. Generally between 400-600 for it. Hopefully it is JUST stuck, coz then all you need is some solvent and brake cleaner to dislodge it.
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#3 (permalink) Old 09-07-2013, 07:05 PM
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Thank you...

UPDATE...

While the mech is checking electric wire connections, I
ordered a new MAF Sensor/Meter and a new Idle Air Check Valve
which may cure the issue of not starting....

The fuel filter is new.

It truly does pay to shop around-online-to check prices and
correct part numbers....

More importantly, it is comforting to have members of this forum
to provide some guidance....

Many tks...

I'll keep in touch as the mystery is solved....!

DrRx.

Last edited by drcrougeux; 09-07-2013 at 07:15 PM.
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#4 (permalink) Old 09-08-2013, 08:54 PM
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your welcome. how much did you pay for the idle air control valve?
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#5 (permalink) Old 09-10-2013, 10:33 PM
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New Idle Air Control Valve: $ 96.00--Free Shipping.

Returnable if not used.

Seemed like a deal to me...


Will know more after it arrives. Will install 1 new part at a
time to see if only 1 part is needed.

Got more advice...?


TIA.

DrRx.
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#6 (permalink) Old 09-10-2013, 11:06 PM
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Quote:
Originally Posted by drcrougeux View Post
New Idle Air Control Valve: $ 96.00--Free Shipping.

Returnable if not used.

Seemed like a deal to me...


Will know more after it arrives. Will install 1 new part at a
time to see if only 1 part is needed.

Got more advice...?


TIA.

DrRx.

Make sure theres NO air leaks in between the mass airflow metre and the throttle body. That will mess with the mass airflow metre's readings.
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#7 (permalink) Old 02-10-2014, 09:54 PM
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Well.....Finally....!
After 6 months....Joy is had...

New Crankshaft P. Sensor.
New MAF.
New Spark Plug wires.
New head gasket/timing cover gasket.
Valve adjustments
Timing Adjustments.
Coolant Flush.
Oil Change.
Misc adj and various 'dial-in' tweaks.

The BMW is back on the road...!
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#8 (permalink) Old 02-11-2014, 01:46 AM
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congratulations that you get it back now .. wishing you a happy ride
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