turnbulltj
Member
- Joined
- October 14, 2007
- Messages
- 13
- Reaction score
- 0
- Year, Model & Trim Level
- 1997 XLT
Please help, can't rev above 3000rpm.
Good afternoon Guys. I am new to this forum, but have found some of the readups extremely helpful. I have an 97 4.0 V6 Explorer, which suddenly about 2 weeks ago went from running superb to seriously bogging down and losing power. It runs but will tick over very lumpy and will not rev out over about 3000rpm when stationary. On travel it will increase speed gradually, but will lose power if I floor it. I have read the forum and done the following on the advice of others, but still to no avail.
Changed the MAF Air Sensor
Changed complete exhaust system including Cats.
Changed Oxygen Sensors (Lambda) in exhaust.
Changed Air Filter
Changed Spark Plugs (One of which was serioulsy cracked)
I have also read about resetting the engine whenever you have had a tinker, but do not know how to do this???
The engine also now seems to go from ticking over nice to running as though it has lost a cylinder. In general it has gone from a nice smooth V6 to a gutless problem. I would be most grateful of any help or advice. As you can see I am going through the relatively cheap processes of elimination and am just hoping that it is not something like a timing chain slippage. My gut feel having had a tinker is that it is something small and insignificant, albeit a bugger to diagnose. Please help, all suggestions gratefully received and definitely tried, I just want to get mt beast back on the road. Being a predominantly USA vehicle we have very few experts over here that we can turn to for advice on these monsters. Thanks again. Will keep you posted guys
Trevor
Good afternoon Guys. I am new to this forum, but have found some of the readups extremely helpful. I have an 97 4.0 V6 Explorer, which suddenly about 2 weeks ago went from running superb to seriously bogging down and losing power. It runs but will tick over very lumpy and will not rev out over about 3000rpm when stationary. On travel it will increase speed gradually, but will lose power if I floor it. I have read the forum and done the following on the advice of others, but still to no avail.
Changed the MAF Air Sensor
Changed complete exhaust system including Cats.
Changed Oxygen Sensors (Lambda) in exhaust.
Changed Air Filter
Changed Spark Plugs (One of which was serioulsy cracked)
I have also read about resetting the engine whenever you have had a tinker, but do not know how to do this???
The engine also now seems to go from ticking over nice to running as though it has lost a cylinder. In general it has gone from a nice smooth V6 to a gutless problem. I would be most grateful of any help or advice. As you can see I am going through the relatively cheap processes of elimination and am just hoping that it is not something like a timing chain slippage. My gut feel having had a tinker is that it is something small and insignificant, albeit a bugger to diagnose. Please help, all suggestions gratefully received and definitely tried, I just want to get mt beast back on the road. Being a predominantly USA vehicle we have very few experts over here that we can turn to for advice on these monsters. Thanks again. Will keep you posted guys
Trevor