| Author | Message | ||
     Jordan Pettigrew (Klecko) New Member Username: Klecko Post Number: 5 Registered: 05-2003 |
For approx 6 months I have been dealing with this issue. I am away lots...Anyway when I return I am thrown back to the wolves with regards to my 98 v8i disco. Problems started after having engine cleaned and undercoating applied. Started to idle high... 1500 to 2000rpm always higher in park or neutral. Almost had valve job done after service department at LR dealer told me this was problem (they said they had tried every other part with no improvement). After reading tips from this site I did not feel comfortable proceeding with valve job. Asked service to remove injectors and have them cleaned and was told that LR field mechanic could guarantee that this was not causing problem. After rechecking my vehicle it was determined that there was possible exhaust leak (exhaust manifold gasket was changed)and wouldn't you know it idle returned to a beautiful normal of about 750 in park and neutral. Sorry for the long winded story but stay with me you will like this. Returning home (2 hour drive) found that cruise control not working and service engine light came on. Brought truck back and service department charged me for diagnostic and told me coincidence light on and cruise control not working even though it was when I originally brought it in. Service manager said areas worked on and new CC problem were no where near each other. New control unit for cruise 580$ canadian (no thanks). Service engine light was O2 sensor change req'd but this was done about 12 months ago as they all failed one after the other. (LR paid half) So I thought my troubles were over as idle was great but one week later check engine light has come back on and truck is idling high again slightly lower than NORMAL (i can't believe i just typed that) and it is going in again on monday. I am losing patients quickly. ANY ADVICE WOULD BE GREATLY APPRECIATED. | ||
| Joseph Bilyk (Denverrover) Member Username: Denverrover Post Number: 68 Registered: 02-2003 |
Jordan, I was having a very similar problem with my 1996 4.0....try this: Drive the truck & when you get a normal idle put it in park, open the hood & unplug the IAS (Stepper motor). This will leave the IAS in a locked position. Drive your truck around & if your idle stays put you know your problem. Replace your IAS & then go get your idle reprogrammed w/ an Autologic machine. |
