2009 Corolla 1.8L rough start and shudder (lemmy.blahaj.zone)

submitted 4 months ago by VerilyFemme@lemmy.blahaj.zone to c/mechanicadvice@lemmy.world

14 comments fedilink hide all child comments

Hey all, my wife's 2009 Corolla has been taking a few turns to start. There's misfires in every cylinder, and the engine shudders.

It was running fine when we got it around a year ago, and the problem slowly came about. I've replaced every ignition coil and spark plug, and they're all firing fine. Then I thought it was oil getting into the spark plug wells, so I attached a straw to a shop vac and stuck it in each one (not much came out), then replaced the valve cover gasket.

It seems to be a fuel issue, but my fuel pump seems fine. I was thinking maybe it's sensors, but I'm really lost and I have got to keep this vehicle running! Any advice would be welcome.

you are viewing a single comment's thread
view the rest of the comments

[-] VerilyFemme@lemmy.blahaj.zone 1 points 4 months ago

Yes, and it's solid.

[-] seathru@quokk.au 1 points 4 months ago

In a way that's good. If it starts flashing while driving, that means you are probably destroying some expensive catalytic converters.

But that being said, if the light is on, a list of active codes will help us help you tremendously. Most all major parts stores will check your codes and give you a printout to take to your mechanic for free.

this post was submitted on 16 Jan 2026

11 points (100.0% liked)

Mechanic Advice

482 readers

1 users here now

This community is for getting help with vehicle or other mechanical problems.

Remember, there are no stupid questions, we want everyone to feel welcome. If you don't want to answer a question that you think is silly, then just move on and keep it to yourself.

Rules:

Don't be a dick

That is all.

founded 2 years ago

MODERATORS

ikidd@lemmy.world

BallsInTheShredder@lemmy.world

Brandonb0013@lemmy.world

ikidd@lemmy.dbzer0.com