If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
a/c turns of SES??
Q: I have been chasing a canister purge solinoid code (26) for a while.
I had a bad Solinoid and some bad hoses -- all were leaking pretty badly. Canister is okay. I checked my wiring and PCM -- all good. But after ~30 seconds of running, the code reappears and the SES comes on. Just out of dumb luck, I turned the A/C on. In about 5 seconds the SES went out. I have found that if I leave the A/C on, I get no code. Any explainations for that one? |
Ads |
#2
|
|||
|
|||
Bill > wrote:
> Just out of dumb luck, I turned the A/C on. In about 5 seconds the SES > went out. I have found that if I leave the A/C on, I get no code. Any > explainations for that one? The AC kicks the idle up a little bit. Maybe the increased idle speed prevents whatever condition sets the code? -DanD -- # Dan Duncan (kd4igw) http://pcisys.net/~dand # Of all the strange 'crimes' that human beings have legislated out of nothing, # 'blasphemy' is the most amazing- with 'obscenity' and 'indecent exposure' # fighting it out for second and third place. -Lazarus Long |
#3
|
|||
|
|||
I believe the A/C clutch driver is the same "quad driver" that can
cause EGR/canister purge solenoid/etc. SES codes. It's conceivable that for example the canister purge solenoid is just barely out of spec and the extra current draw of engaging the A/C masks this. Tim. |
#4
|
|||
|
|||
I have a test PCM that I can use. I'll try to see if this makes a
differance. Thanks! |
#5
|
|||
|
|||
Well, there should be nothing (EGR, Purge solinoid, etc) out of spec,
because I had to replace them all already. I'm pretty sure the problem is in the PCM. I went and tried a test PCM and the code stayed away with and without the a/c on. Previously, before replacing the purge solinoid, both would code 26. Tim, I think you are on to something. If there is an internal problem with the "quad drive", this could explain it. I only had limited time to test it, but I'm pretty sure the other PCM will be the cure. Thanks! |
#6
|
|||
|
|||
> but I'm pretty sure the other PCM will be the cure
Don't neglect checking the wiring harnesses and grounding (battery to frame and PCM to frame in particular). It'd be awful to buy a new PCM when all you really needed was to clean up a few ground connections. Tim. |
#7
|
|||
|
|||
Thanks for the info. I go down the road of bad grounds at my "real job"
quite a bit. It will cause some strange problems. The PCM actually cost me a whole $28.00 plus shipping on Ebay. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
93 civic turns over but won't start | [email protected] | Technology | 2 | February 24th 05 02:15 AM |
Dana 44 turns into Dana $2000 | Rushfn1 | Jeep | 18 | February 4th 05 06:31 AM |
2004 325XI oil light yellow when ignition turns off | Frank_Del | BMW | 8 | November 19th 04 12:51 AM |
99GT turns over slowly, won't start | Randy Replogle | Ford Mustang | 1 | November 7th 04 10:09 PM |
**Civic shakes and turns left** (over 120km/h or 75mph) | Jason | Honda | 10 | November 3rd 04 05:10 AM |