Skip the auto shop - Our mechanics make house calls

Q: engine misfire on running temperature

asked by on

my volvo s40 1.6 start misfire after the service (changed timing belt) after that its start misfire after two miles of run or when the temperature get half in the meter. I check with local volvo dealer they could't figure it out. I replace EGR MAF AND COOLANT SENSORS It does't cure the problem, I noticed that fan is running more time than the usual even after engine is turned off.

My car has 128000 miles.
My car has a manual transmission.

A: This sounds like you may have potentially t...

This sounds like you may have potentially two unrelated problems. The first may be related to the issue of timing causing the misfiring, and the second could be related to the fan running more than usual.

First, the misfiring issue sounds like potentially a problem related to the service related to the timing belt being replaced. It is very easy to misalign a timing belt even by one tooth, which can cause misfiring problems.

The second issue is related to the fans coming on more often than necessary related to a variety of issues, some of which you have already fixed. The one thing you did not mention was the thermostat.

If the thermostat is not functioning correctly, this can cause the fan to run more often than normal. I would recommend having an expert mechanic from YourMechanic come to your home or office to diagnose and repair the misfiring issue for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I am considering buying a 2010 Volvo s40 with 115000 miles on it. The test drive went well, and they are asking $6,999 for it. Is

Hi there. $7,000 for a previously owned Volvo S40 with nearly 120,000 miles is not a bad deal. In general, maintenance and service costs for these vehicles after 100,000 can be higher than other consumer cars, but are actually competitive...

Q: My hot temperature light is blinking and the temperature is below the C mark. Is it safe to drive home?

Hi there. The coolant temperature sending unit is malfunctioning and sending the vehicle the wrong information or the gauge on the dash has failed. The sending unit could have burned inside causing the computer to think that the engine is...

Q: Wont start after timing belt replacement

If you are getting fuel and compression, then you need to check to see if you have spark. If you do not have spark then test the ignition system or crankshaft sensor using a scan tool. If your engine was...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.