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Honda Accord (1994-1997) Maintenance and Repair

1549 messages,  Last post on Dec 07, 2009 at 10:15 AM

You are in the Honda Accord Forum. Your Hosts are pat & karens

What is this discussion about? Honda Accord


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#1525 of 1549
Re: Engine Code 71 Common Causes? [Mr_Shiftright] by Trhenning
Nov 08, 2009 (6:48 pm)
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Replying to: Mr_Shiftright (Nov 08, 2009 7:35 am)

Thank you very much. I did the fuel system cleaner, This morning I reset the ECU yet again. I took about an 80 mile drive (expressway, 5th gear) before the problem popped back up. approx 63MPH it the CEL came back on. Again this is a 71 code (has been every time. Only code that seems to pop us is cylinder 1 misfire, not any of the others. Do you think this points to EGR, Ignition Control Module, or somewhat else first and foremost?
 
All the best,
 
Tim
#1526 of 1549
Re: Engine Code 71 Common Causes? [Trhenning] by Mr_Shiftright HOST
Nov 08, 2009 (7:46 pm)
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Replying to: Trhenning (Nov 08, 2009 6:48 pm)

This is an incomplete code, I guess a generic code from Autozone or some such?
 
This code could signify a gazillion things. It's not much to work with. So you have to get a Honda trouble code on their scanner or a deeper scan and/or more diagnostic work.
 
If you want me to guess at this point, and I didn't have a scanner, I'd check for vacuum leaks at the manifold and then I'd clean the MAF sensor and see what that does.
 
This misfire could be caused by so many other components, is the problem.
#1527 of 1549
Re: Engine Code 71 Common Causes? [Mr_Shiftright] by Trhenning
Nov 08, 2009 (7:55 pm)
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Replying to: Mr_Shiftright (Nov 08, 2009 7:46 pm)

I believe the autozone code is P0031 OBDII, I did have it scanned the first time around. Cylinder 1 misfire. I got the 71 code by jumping the troubleshooting connector and counting the long and short flashes on the CEL. According to the book, it is the same code. The problem I am having with figuring out what to replace is that it doesn't happen all the time. Just after the car had been running at highway speeds for a continued period of time. I know an EGR is $100, an ignition module between 60-70. Trying to save replacing more than what is required. Maybe a set of bad wires perhaps, but I did just replace them. Wondering about an overheating part too.
#1528 of 1549
Re: Engine Code 71 Common Causes? [Trhenning] by Mr_Shiftright HOST
Nov 08, 2009 (8:02 pm)
Reply

Replying to: Trhenning (Nov 08, 2009 7:55 pm)

no, 7-1 (if that's what you got by counting flashes) is not a Honda misfire code. That's an air bag code according to my book.
 
There's P0171, lean fuel mixture, which does indicate possible 02 or EGR problems.
 
P0131 is also an H20 sensor code.
#1529 of 1549
Re: Engine Code 71 Common Causes? [Mr_Shiftright] by Trhenning
Nov 08, 2009 (8:16 pm)
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Replying to: Mr_Shiftright (Nov 08, 2009 8:02 pm)

I ran up to autozone before it closed. OBDII States P0301 Misfire Cyl. 1
#1530 of 1549
Re: 97 Honda Accord Tires show cracks... [sogomimi1029] by tallman1
Nov 08, 2009 (10:57 pm)
Reply

Replying to: sogomimi1029 (Nov 08, 2009 2:27 pm)

1) Which of the tires above / listed are my best options?
 
You may want to expand your search a bit. A great place to start is to check out tirerack.com.
 
BTW, siping is an option on tires from Les Schwab. You don't HAVE to have that done.
#1531 of 1549
Re: Engine Code 71 Common Causes? [Trhenning] by Mr_Shiftright HOST
Nov 09, 2009 (7:18 am)
Reply

Replying to: Trhenning (Nov 08, 2009 8:16 pm)

[P0301] The scan tool indicates Diagnostic Trouble Code (DTC) P0301: Cylinder 1 misfire detected.
 
DESCRIPTION
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft position (CKP) sensor which is attached to the crankshaft.
If misfiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence, and DTC P0301, P0302, P0303 and/or P0304 will be stored. Then, after the misfire has ceased, the MIL will come on.
If misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTC P0301, P0302, P0303 and/or P0304 will be stored.
 
NOTE: If some of the DTCs listed below are stored at the same time as a misfire DTC, troubleshoot those DTCs first, then troubleshoot the misfire DTC.
 
P0106: MAP sensor
P0171, P0172: Fuel supply system
P0401, P1491, P1498: EGR system
P0441: EVAP incorrect purge flow*
P1359, P1361, P1362: TDC sensor
P1381, P1382: CYP sensor
*: Sedan KL (SE, LX without ABS)/Wagon
 
Possible Cause
 
    * Fuel injector clogging, fuel leakage, air leakage
    * Fuel injector circuit open or shorted
    * Injector resistor malfunction
    * Spark plug carbon deposits, fouling, malfunction
    * Ignition wires open, leaking
    * Distributor malfunction
    * Compression low
    * Valve clearance out of specification
#1532 of 1549
Re: Engine Code 71 Common Causes? [Trhenning] by elroy5
Nov 09, 2009 (3:15 pm)
Reply

Replying to: Trhenning (Nov 08, 2009 8:16 pm)

If the misfire only happens for one particular cylinder, I would check that plug, wire, distributor cap etc. If the EGR was causing misfires, seems like it would happen on more than one cylinder. Maybe try switching a plug and wire, with another cylinder, to see if the misfire changes cylinders.
#1533 of 1549
Re: Engine Code 71 Common Causes? [elroy5] by Mr_Shiftright HOST
Nov 09, 2009 (5:17 pm)
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Replying to: elroy5 (Nov 09, 2009 3:15 pm)

He said he put in new plugs and wires....but that's still a good suggestion you have there.
#1534 of 1549
Re: Engine Code 71 Common Causes? [Mr_Shiftright] by elroy5
Nov 10, 2009 (3:14 pm)
Reply

Replying to: Mr_Shiftright (Nov 09, 2009 5:17 pm)

Well, I've made the mistake of buying cheap plug wires from Autozone, and they caused misfires a week later.

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