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Isuzu Rodeo Check Engine Light

93 messages,  Last post on Nov 26, 2009 at 12:02 PM

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What is this discussion about? Isuzu Rodeo


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#12 of 93
2003 Isuzu Rodeo Check Engine Light - Fuel Cap by t2frisco
Jul 23, 2006 (4:56 pm)
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Three clicks on the fuel cap are NOT enough!
 
Upon refueling my gas tank on my 2003 Isuzu Rodeo and following the 3-clicks rule, the Check Engine Light (CEL) came on! When I stopped to make sure the fuel cap is tighten, the warning message on the fuel cap "Check Engine Light may come on" stands out like "I told you so". When I got home I got on Google and read most of the posted problems related to the CEL.
 
Then I disconnected the battery cables to reset the computer and waited for 5 minutes. After putting the cables back, the CEL goes away.
 
The 3-click rules may be 4 or 5 or bunch click to make sure that the sensor sees the cap being closed!
 
The CEL is a latch desgin. Once the fault is triggered it won't goes away until it is instructed to clear. One way to clear the latch is to disconnect the battery cables for about 5 minutes. There are two fuses, namely ECM Main and ECM Backup, in the fuse box under the hood on the passenger side. Maybe taking those two fuses out also resets the computer but I haven't tried it yet!
 
I don't know how the fuel cap sensor works though. I don't see any electrical connection out of the fuel cap!
 
T2Frisco
#13 of 93
1999 rodeo by hardridincwby
Aug 14, 2006 (7:56 pm)
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Having a shifting problem. We live on a rough country road. Rodeo had problem when we purchased it three years ago. Mechanic at that time messed with a sensor,[ would not tell me where it was], problem then cured. Can not locate this sensor. Truck is mrs. so can't give better clue, has been serviced, could not get to spark plugs { hidden?}. Can you give me clue where to start? Waynes manual doesstate or show where sensor is or how to get at plugs. thank-you for any help you may have. Hardridincwby
#15 of 93
98 RODEO- TRANS LIGHT BLINKING- CHECK ENGINE LIGHT ON AND ABS LIGHT ON by kstjmy2
Aug 17, 2006 (5:22 pm)
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The transmission light just started blinking and my check engine light has been on forever and the ABS light is always on. We have put it on a scanner and it says that the cad.converter or O2 sensor but nothing on the ABS light- Just changed the brakes on it and I have no idea why the trans light is now blinking? Anybody have any ideas.
#16 of 93
Re: 98 RODEO- TRANS LIGHT BLINKING- CHECK ENGINE LIGHT ON AND ABS LIGHT ON [kstjmy2] by hardridincwby
Aug 17, 2006 (7:35 pm)
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Replying to: kstjmy2 (Aug 17, 2006 5:22 pm)

This sounds odd but, check alternator. If a triode on the charging side is even slightly weak thing get weird. If thats not it, check sensor on rear axle. Ours wiggled loose, hard to diagnose.
 Good luck
#17 of 93
2001 rodeo lse by bucsngoofy
Aug 17, 2006 (8:16 pm)
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hi, just got a 2001 rodeo lse, love it, however, the cruise control keeps engaging on it's own, and if i don't catch it right away, it totally makes my car die!! the cruise set light and check transmission light comes on, if i catch it i can disengage it, but otherwise my truck just quits on me! have taken it into a friend who's a mechanic, nothing comes up on the diagnostic check, we wanted to just take the cruise out, but i guess in the rodeo there are two computer systems, instead of just one, and he doesn't know which one it would be in!! he doesn't charge us, so that's why we haven't gone to a dealer yet, does anyone know anything about this?
#18 of 93
Re: 2003 Isuzu Rodeo Check Engine Light - Fuel Cap [t2frisco] by rodeo7777
Aug 26, 2006 (5:48 pm)
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Replying to: t2frisco (Jul 23, 2006 4:56 pm)

I bought a new aftermarket locking gas cap and every since then I've been getting the CEL to come on sporadically. The CEL does turn off after the computer cycles enough times to clear. Going to try the battery cables. I only get the CEL every so often now, because I realized you have to keep on-a-clickin' the cap.
#19 of 93
2000 Transmission & Engine Check Light by a_corlette
Aug 29, 2006 (7:13 am)
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I have a 2000 Rodeo 4 dr, 2WD. The check transmission light started blinking and the vehicle is struggling to shift into the fourth gear. The check engine light also just came on. This vehicle is serviced by the dealers on time and the transmission check was also done a few months ago within the dealer specified time and all was ok. The vehicle mileage has only just passed 50 thousand miles and it is not been driven hard. What should I do or expect the dealers that service the vehicle to do?
#20 of 93
Re: 1999 rodeo [hardridincwby] by hproesel
Sep 02, 2006 (6:17 am)
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Replying to: hardridincwby (Aug 14, 2006 7:56 pm)

Did you ever receive a reply to your query about your shifting problem? I've also got a 1999 Isuzu Rodeo V6 and it's having the same problem. My CEL and ABS light came on months ago but hasn't affected the performance of the car. I drive about 100 miles per day. Shifting problem (clunks between 2/3 and when downshifting) started about a week ago, then went away by itself the next day. This morning started again. I also live on a very bumpy country road and was wondering what kind of a sensor you're referring to or possibly something has vibrated loose. Thanks for any help
#21 of 93
Re: 98 RODEO- TRANS LIGHT BLINKING- CHECK ENGINE LIGHT ON AND ABS LIGHT ON by jpnscohen
Sep 02, 2006 (7:27 pm)
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Replying to: kstjmy2 (Aug 17, 2006 5:22 pm)

We have a 95 Rodeo and the Check Trans light has been blinking for over a year. They couldn't find any actual problem (it drives fine) so they suggested replacing the computer (>$1k). That's almost half of what it's worth, so we decided to wait...

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