Volvo 240 - B230F idle and ignition problem

Vegvolvo · Post by **Vegvolvo** » 25 May 2016, 12:16

Good day fellow Volvo owners! I've had a problem with my 1989 volvo 244 B230F for a while now and i can't seems to find or fix the problem.

The problem: The car idles very rough. In addition, if it goes on idling for more than 1 min, it starts shaking, and then turns off. If i stay very long at stoplights i sometimes 1/4 times gets misfire and the exhaust is making a "booom". Often when i try to accelerate and put the gas pedal to max the car stalls and will not increase its RPM. It only does if i give it a little push on the pedal, and then it slowly gains speed.

What i've changed:

- Distributorcap
- Spark plugs
- Spark plug wires and distributor-coil wire
- Lambasonde (O2 sensor)
- MAF

93Regina · Post by **93Regina** » 25 May 2016, 22:15

Vegvolvo wrote:"booom".

Ah yes, John Lee Hooker's Boom Boom

So, change out fuel filter, and if the same, do a rail pressure test.

Vegvolvo · Post by **Vegvolvo** » 26 May 2016, 16:39

93Regina wrote:
Vegvolvo wrote:"booom".
Ah yes, John Lee Hooker's Boom Boom

So, change out fuel filter, and if the same, do a rail pressure test.

The compression is fine.

93Regina · Post by **93Regina** » 26 May 2016, 16:55

Vegvolvo wrote:The compression is fine.

Compression refers to cylinder pressure test. Fuel pressure is tested at the fuel rail.

I'm assuming your volvo has LH 2.4 setup. So, what code(s) does EZK/LH-2.4 show?

The symptoms mentioned suggests a lean mixture.

Vegvolvo · Post by **Vegvolvo** » 27 May 2016, 06:56

93Regina wrote:
Vegvolvo wrote:The compression is fine.
Compression refers to cylinder pressure test. Fuel pressure is tested at the fuel rail.

I'm assuming your volvo has LH 2.4 setup. So, what code(s) does EZK/LH-2.4 show?

The symptoms mentioned suggests a lean mixture.

Im not too good with cars, but i can't test the fuel rails. Yeah i have the LH 2.4 setup i think. But i get the code 1-1-3 and 2-3-2

93Regina · Post by **93Regina** » 27 May 2016, 21:55

Vegvolvo wrote:code 1-1-3 and 2-3-2

Here's code's

Either low rail pressure, or an injector issue, most likely.

One could remove spark plugs, and compare them to each other.

Vegvolvo · Post by **Vegvolvo** » 28 May 2016, 02:16

93Regina wrote:
Vegvolvo wrote:code 1-1-3 and 2-3-2
Here's code's

Either low rail pressure, or an injector issue, most likely.

One could remove spark plugs, and compare them to each other.

After driving for a bit like 100 kilometeres, two of the spark plugs gets more black then the other two.

lummert · Post by **lummert** » 28 May 2016, 16:18

Leaking injector 0-rings? The o-rings that seal the injector between the fuel rail and the intake manifold.