When does a Mercedes 190E misfire on a hill?
Neither the main MB agent nor my local garage have been able to fix it, mainly because it works perfectly when they have it! The misfire only occurs when the engine is under load, accelerating up a hill, in any gear, when the revs exceed 2000RPM. The misfire is so severe I feel sure it involves at least 2 or more cylinders.
What causes a cylinder to misfire in a Mercedes?
In most cases, a cylinder misfire is caused either due to old spark plugs that need to be replaced. A failed ignition coil or a bad spark plug wires. If none of the above fixes your misfire problem carefully analyze the fault codes, it is possible that misfire may be indirectly caused by another problem in the engine.
Is the Mercedes 190E 2.0L a reliable car?
I have had a 1990 Mercedes 190E 2.0L (111k miles) from new. It has been totally reliable, except for one problem, an intermittent misfire, which it’s had off and on for the past two years. Neither the main MB agent nor my local garage have been able to fix it, mainly because it works perfectly when they have it!
Where are misfire codes stored in a Mercedes?
Luckily for you, the misfire codes are stored in the ECU and are very easy (and inexpensive) to retrieve. To diagnose an engine misfire on a Mercedes all you need is a generic OBD II code reader that can be bought in some cases for under 20 at your local auto parts store or on Amazon’s Best Selling OBD II scanners list.
How long does a Mercedes 190E misfire last?
The car will run perfectly for 2000 or 3000 miles, then suddenly develop the misfire, especially pulling away from a junction. It lasts any where from 100yd to 30 miles, then disappears and runs fine again, until the next time.
Why does my Mercedes Benz engine misfire so often?
Engine misfires are one of the most common problems we see in many Mercedes-Benz cars. To be honest, it is not because MB cars are weak in this area, but because most owners forget that spark plugs are wear items and need to be replaced at the recommended intervals.
I have had a 1990 Mercedes 190E 2.0L (111k miles) from new. It has been totally reliable, except for one problem, an intermittent misfire, which it’s had off and on for the past two years. Neither the main MB agent nor my local garage have been able to fix it, mainly because it works perfectly when they have it!
Luckily for you, the misfire codes are stored in the ECU and are very easy (and inexpensive) to retrieve. To diagnose an engine misfire on a Mercedes all you need is a generic OBD II code reader that can be bought in some cases for under 20 at your local auto parts store or on Amazon’s Best Selling OBD II scanners list.
When does the engine code report misfire on cylinder 2?
•It only happens when you start the engine and the engine is NOT at operating temperature. •The engine code always reports misfire on Cylinder #2 I put in a new plug and swapped coils but it still reports the misfire on cylinder #2.
Is it OK to drive an engine that is misfiring?
Instead from that, misfires can damage other sensors in the engine like the O2 sensors. So, I would never recommend driving an engine that is misfiring for any long distances. Short distances to your mechanic workshop without putting a load on the engine is fine, but do not ignore the misfires and keep driving.
What is causing an intermittent misfire only when engine?
Cleared the code several times and it kept reporting misfire on cylinder 2. You could also feel the misfire happening. Turned engine off, started it right back up, like before no misfire, cleared the code and it no longer reported a misfire. •This just started intermittently happening.
Neither the main MB agent nor my local garage have been able to fix it, mainly because it works perfectly when they have it! The misfire only occurs when the engine is under load, accelerating up a hill, in any gear, when the revs exceed 2000RPM. The misfire is so severe I feel sure it involves at least 2 or more cylinders.
Instead from that, misfires can damage other sensors in the engine like the O2 sensors. So, I would never recommend driving an engine that is misfiring for any long distances. Short distances to your mechanic workshop without putting a load on the engine is fine, but do not ignore the misfires and keep driving.
•It only happens when you start the engine and the engine is NOT at operating temperature. •The engine code always reports misfire on Cylinder #2 I put in a new plug and swapped coils but it still reports the misfire on cylinder #2.
Cleared the code several times and it kept reporting misfire on cylinder 2. You could also feel the misfire happening. Turned engine off, started it right back up, like before no misfire, cleared the code and it no longer reported a misfire. •This just started intermittently happening.