Skip the auto shop - Our mechanics make house calls

Q: Timing cover and coolant leak questions

asked by on

4 months ago I had a hose leak and got it fixed at a Nissan dealership then some months go by and I had my oil changed and the mechanic commented on smelling coolant at the same Nissan dealership but no one bothered to check any further, then a few more months go by and my check engine light comes on and I bring it back to the same dealership and they said my timing cover is bad needs to be replaced and it will be about $4,000 but they said it wasn't so bad that I couldn't drive it for a while and they cleared the code, so I brought it into a different Nissan dealership and at that dealership I find out that the hose that the original dealership fixed back in early summer never was clamped so coolant had been slowly leaking wherever in my car and I never noticed it on the ground so I'm guessing it must have been leaking into the engine or something. So my question is could the coolant leak have caused my timing cover to go bad?

My car has 119000 miles.
My car has an automatic transmission.

Hello and thank you for contacting Your Mechanic. Having a coolant leak will not damage a timing cover, however, having an engine overheat will cause a timing cover to warp or crack if the coolant was to spray on it. It’s like having a hot cup and putting cold water in it, it cracks. Look at the timing cover for any cracks, leaks around the timing cover, or the front engine seal for any leakage of oil. If your issues with the check engine light recurs, consider a YourMechanic certified technician come to your location for a check engine light is on inspection. Alternately, if you inspect the timing cover and find it to be damaged, a YourMechanic certified technician can also perform a timing cover replacement on your vehicle 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: Headlights burning out

There are a few possible reasons for frequent headlight bulb burnout, but I would recommend looking very closely at your headlight assemblies. It is very possible that you may have a crack in your headlight, allowing moisture to get...

Q: thumping noise getting louder when driving the car

This is a sign of worn or failing CV joints. All front-wheel drive cars have Constant Velocity joints or CV joints on both ends of the drive shafts (half shafts). Inner CV joints connect the drive shafts to the transmission,...

Q: I recently replaced the starter and now my check engine light is on in my 1999 Nissan Maxima

Hello. The starter should not have anything to do with the check engine light. Since the check engine light is on I would scan the computer for codes. I am assuming that the engine has a serious misfire, which can...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...