Question about 2004 Honda Civic

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Stalling hard start

Car stalls at lights and is hard to start after. No codes

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No DTCs. (even cranked for 5second, you must crank to see them. pop up, P0340 355s etc.)
all fuses good? ever do a 60k mile tune up, ever? it repeats and is critfcal.
so you crank it.
you check spark at all cylinders, 4 to 6? (no engine stated)
got spark? you check timing with a "timing light" and its
WAY OFF, opps you skipped the new cam belt, service and if you
keep cranking it , you bend the head valves. ($$$$$$$)
ok, sparks good, and timed good.
its bad fueling?
you examine spark tips
all are wet, all are dry, or 1 or 2 are wet and others dry.
(this is called evidence)
this all assumes engine compression is at spec. 150PSI or more.

we then trouble shoot , these facts.
lean? , we check for low fuel pressure. and MAP /MAF sensor and ECT
rich? same thing, but this too high fuel pressure.

how cold is it outside. -50F or +80F in florida keys)
we check that the 2 sensors match that before first start. parked overnight.
the my both be near ambient, ECT and IAT.
scan tools allow you to see all the sensors. to see if they are fibbing.
a $9 tool.

Posted on Feb 09, 2014


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Posted on Jan 02, 2017

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SOURCE: Car stalls for about 1 mile then runs fine

Remove your passenger side kick panel, remove the TCU, take cover off of it and see if #36 or #39 is burnt if so replace it.


Posted on Feb 10, 2009

  • 4 Answers

SOURCE: stalling at a stoplight

sounds like your not getting enough gas try first determining iif your getting enough fuel from the gas tank to the engine and if not you might half to replace the pump because the fuel filter is part of the pump by you might be able to find just the filter somewhere, but if thats not the case then check your injectors there could be one the is misfiring or clogged so try also during a good fuel system clean on it

Posted on Mar 25, 2009

  • 16 Answers

SOURCE: stalling and wont restart

it could be many things. but i would have the ignition module checked out. I had a car that did that.

Posted on Aug 05, 2009

  • 31 Answers

SOURCE: rough idle. stalling,hard starting

It is probably your IAC valve.

Posted on Sep 23, 2009

  • 1348 Answers

SOURCE: hard starting then starts up after a while then

they are known for bad distributors.there is a module inside the distributor called an ICM,and if it fails,the car will run like that.Also check that the ECT sensor for the computer is operating at less than 1 volt dc.A bad coolant temp sensor will cause a hard start condition.

Posted on Jul 25, 2010

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1990 jeep grand Cherokee stalls when coming to a stop. The transmission otherwise feels good. TCM? It acts like its not downshifting.

first off, no engine stated, 2.5 or 4.0L USA car, or export?
nor if restart at at stall are easy.?-

its not the TCM, because the TC clutch disengages at low RPM
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now my useless guess.
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the ASD works like this.

free FSM her

the secret key trick is here. (a real scan tool is 10x better)
Start with the ignition off. Within five seconds, switch the key on, off, on, off, on. ("On" is NOT "Start" and "Off" is NOT "Lock").
The "check engine" light will flash. (codes)
Count the flashes. Each code is a two digit code,for example,23 would be FLASH FLASH (pause) FLASH FLASH FLASH (long pause). It may flash out up to 9 codes.

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Seeing as how you had a check light on,
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Sounds like a bad fuel pump on the stalling or
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