| Author | Message | ||
     Jordan Pettigrew (Klecko) New Member Username: Klecko Post Number: 35 Registered: 05-2003 |
After 2 hour drive from Ottawa to Pembroke check engine light coming on. After approx 10-20 starts light goes off. Next long drive it goes on. No change in performance. Any thoughts? | ||
| Will Cupp (W_cupp) Senior Member Username: W_cupp Post Number: 307 Registered: 07-2003 |
My 99 has been doing that. Only on long trips then resets after a few days. I have not checked the codes yet, but I think, at least in my case, it's a misfire or something. The reason I think this is because it has not done it since replacing the plugs and wires. | ||
| Ivan 94 LWB (Montoya) New Member Username: Montoya Post Number: 29 Registered: 01-2003 |
just posted a similar question but no answers. when i spoke with phillip from roverland and explained the low idle and check engine light, he said it may be the stepper motor. found this about the stepper motor on google . . . Used on all 90's era RR classics. The idle air control valve aka stepper motor, is a device used to stabilize idle air volume. Particularly when, for example, you are idling in traffic, summer day, and turn on the A/C. The compressor load (hp) will tend to lower the idle on lesser cars, but on our trusty RR, the stepper motor adjusts to compensate. So chances of stalling reduced. It is linked to the efi ECU. It needs to be cleaned every 20-50k mi, depending on operating conditions. It is located at the rear of the large alum air plenum and is carefully unscrewed (2 small bolts I think on D1 ?)to service. AC Delco part is replacement @ NAPA and others. Mucho $$ @ dealers. Mine is orig, works great @ 95K mi. Cheers, doug 95 lwb | ||
| Ryan Graham (Ryangraham) New Member Username: Ryangraham Post Number: 6 Registered: 01-2004 |
Given the fact that this board knows so much about rovers I assume you are all right about the IAC valve. But one thing I noticed is that you described as "after long trips." The first thing I think of when someone describes problems after long trips or when getting off the freeway is the torque converter clutch or problems in that area. I haven't heard of this being a problem on Rovers, but its just another line of thought. | ||
| Micky_dee (Micky_dee) Member Username: Micky_dee Post Number: 52 Registered: 11-2003 |
retreive the codes to get a propper diagnostic of the proplem. once you get the code or codes from the on board computer then you can go about rectifying the problem. the check engine light can be triggered by a number of things. so, i would suggest to start at the read out display, obtain any fault codes and go from there,.spanishtrailrovers will have a link to the fault codes and what each one means. | ||
| Joey (Joey4420) Senior Member Username: Joey4420 Post Number: 530 Registered: 04-2003 |
If happening on long trips, it could also be the Cats going bad....since they would be getting very hot on a long trip.... Next long trip, check and see if they are glowing.... | ||
| David Huddleson (Dhuddleson) New Member Username: Dhuddleson Post Number: 15 Registered: 09-2003 |
You need to get the OBDII codes read from the vehicle. Even though the Check Engine has gone out, the codes will still be stored in the computer. I had similar experiences last year at around this same time (Jan-Feb), and it turned out to be Oxygen sensors (upstream) errors. I ended up buying a pair of O2 sensors from one of our vendors here (roverguy.com) and this problem is completely gone! No "Check Engine" light since. But, get the codes read first! Most any competent garage can extract the codes for you. |
