Flashing engine light

20

Asked by Cowboyruss Jul 12, 2016 at 10:27 AM about the 2005 Chevrolet Trailblazer LT 4WD

Question type: Maintenance & Repair

I have a flashing engine light that comes on when
the motor is under any kind of strain. I've scanned
it and it's reading P0300. Multiple cylinder misfire.
I've replaced the plugs and it still exists. It has a
rough idle but it seems to be running a little better.  
I'm kinda at a stuck point. Any ideas where I should
try next?

10 Answers

65,510

Also have mechanic check for a partially clogged catatlic converter.

5 people found this helpful.
80

You should change your ignition coils. I had the same problem with a loss of power and a rough idle. Try and replacing your ignition coils next on all of your cylinders.

8 people found this helpful.
310

mine is doing the same thing it was sitting for a while and it had a little bit of an hesitation and now all of the sudden it is missing really really bad. and when I go to drive it misses bad and the engine light flashes when it is struggling. could anyone help me or give me advice on how to fix this problem

31 people found this helpful.
50

Those vehicles have a bad number four bank.probably a bad coil pack

5 people found this helpful.
80

This misfire can be caused by your up stream o2 censor due to causing a lean fuel mixture try replacing it and the exhaust manifold if it has an exhaust leak

8 people found this helpful.
10

I used a cheap har freight sparkplug socket when I replaced them last year. I lost the rubber from it in the sparkplug hole in the back of the six cylinder under the firewall. I got out the piece of rubber and it now runs great.

1 people found this helpful.
35

I have 2005 Chevy trail blazer , u drive it down the road check engine light is flashing, it’s pulling up code U1000, I pulled the spark plugs out there is oil on them can sum one please help me out Thanks I would appreciate it

3 people found this helpful.

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