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Questions tagged [misfire]

A condition where one or more engine cylinders experiences lack of combustion or mistimed combustion through detonation

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5 votes
2 answers
6k views

A/C Temporarily Cures Low, Hiccupping Idle

I have a 99 Nissan Almera 1.6L MTX ( nearly identical to the Sentra sold in the US ) which has developed a problem with low idle, occasional stalling at stop lights, what seems to be misfires and ...
Robert S. Barnes's user avatar
2 votes
1 answer
15k views

How can I identify which cylinder is responsible for a petrol engine misfire?

My petrol engine has developed a persistent misfire. How can I figure out which cylinder is the culprit in order to hone in on the root cause?
Zaid's user avatar
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21 votes
4 answers
25k views

How does the car's ECU detect a misfire?

I was wondering what the specific mechanism used by car ECU's to detect misfires is, or are if there is more than one method.
Robert S. Barnes's user avatar
3 votes
3 answers
313 views

Is hot desert weather the source of my recurring car problem?

I have a 2004 ford ranger with a short history of problems...the engine is v6 3.0L OHV. 1) It died 2 summers ago, stopped right in the road, around noon in the middle of July. I live in Tucson so it ...
Z W's user avatar
  • 225
2 votes
1 answer
3k views

MINI Cooper limp mode without a CEL

Yet more strangeness with my 2008 Cooper S. Limp mode comes on almost immediately after starting the car for the past few days. This displays a half-filled engine icon on the dash and greatly limits ...
Spivonious's user avatar
12 votes
2 answers
4k views

Can (possible) exhaust system damage cause random misfires?

2001 Honda Prelude SH. About three weeks ago while travelling 10-15 mph I pulled off the side of a dirt road to park and it turns out there was a row of a few railroad ties laying in the grass there....
Jason C's user avatar
  • 4,890
7 votes
4 answers
40k views

The Mystery of the Misfiring MINI

It's me again. 2008 MINI Cooper S w/ dealer-installed JCW package (chip tune, larger air intake, larger cat-back exhaust). I thought everything was fine after resetting my ECU last week, but had bad ...
Spivonious's user avatar
5 votes
1 answer
5k views

Can a bad timing chain result in only a single cylinder misfiring?

The question title should be pretty self explanatory. I have a 2002 Nissan Maxima which began idling and accelerating really poorly (seemingly out of nowhere) a few days ago while I was driving home ...
Ethan Bierlein's user avatar
2 votes
1 answer
6k views

Pros and cons of driving a vehicle with a misfiring cylinder

Check engine light came on for a Toyota Prius that is only being driven about once a month since COVID-19 pandemic began. OBD-II scanner shows P0302, which indicates the problem is a misfiring ...
End Antisemitic Hate's user avatar
2 votes
3 answers
628 views

Chevy S-10 blazer misfire

I have a 1997 Chevy s-10 blazer, 2 door LS, 4wd v-6, vortec, 4L60 auto trans, 216,000 miles, not a oil burner or smoker, Whenever I go to climb a steep grade it cannot maintain a steady speed and ...
Bud Morgan's user avatar
1 vote
0 answers
1k views

Chevy Blazer 4.3 with p0303 error (cylinder 3 misfire) shortly after running medium-hot: now wonky idle, but smooth at high RPMs

I've got a 97 Chevy Blazer with the 4.3 and 281k miles. It might be of-note that a shop replaced my Lower Intake Manifold gasket about 18 months ago. At the very end of a long trip this weekend it ...
elrobis's user avatar
  • 391
1 vote
1 answer
186 views

Cylinder misfires since having a full service on Golf MK5 2005

I took my VW Golf MK5 2005 (130,000 miles) to have a full service the other week which included changing all 4 spark plugs. Whilst driving home the engine management light came on and I lost some ...
AWGIS's user avatar
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