Hi There!
I have a 1998 Frontier SE 2.4l SE Automatic. It's a 98, not an 89. I messed up in the title. I'm having an intermittent issue with it bogging down on me. Let me start by saying that I do currently have the Instrument Panel issue that's supposedly common with these trucks (Completely dead- Fuel gauge pegged on full, etc..) but I doubt that's part of this problem as I've been driving it like that for several months before the bog issue started.
I'll be driving along, usually for quite a while 30-45 minutes around town when suddenly it'll just lose power. If I pull over and try to rev it, it will only rev a little bit (no tach) then bog heavily. If I turn the truck off and restart it, it will often go back to normal driving conditions for a while. A previous forum said it was likely the O2 sensor so I changed that but it didn't fix it. A friend who had the same issue on his Frontier years ago said to change the Knock Sensor. The ones at the parts store were $100 but on Ebay I could get them for $6 so I ordered two, just in case. I replaced it (bugger bear of a job as you have to remove the throttle body to get to it) and it seemed to be ok for about a week. Something told me to get off the highway and sure enough, moments later it happened again. I put the spare Knock Sensor on and re-positioned it to the intake manifold this time in case I have to do it again. I didn't get five miles down the road when it bogged down again.
Could it be something as simple as the fuel filter? Or did I get a bad knock sensor out of the box, do you think? Or perhaps one of the other sensors? Oh.. the code that it was throwing at first was "Coolant Sensor Circuit Failure". I replaced the coolant sensor but the code stayed. The check engine light went off on it's own after I changed out the first Knock Sensor, though. After the second failure, the code was, "Manufacturer Code Fault". When I put the new KS in, I reset the codes since it didn't automatically reset like last time, figuring I'd get a fresh go at it. No codes have popped up after this last failure, though. The check engine light hasn't come on, despite the bogging issue.
Sorry for the novel, I figured I'd try to get it all in on the first post. Any advice would be helpful. I'm planning on changing out the fuel filter today and another of the cheap KS's has come in so I might just put it on, too.
Many Thanks!
I have a 1998 Frontier SE 2.4l SE Automatic. It's a 98, not an 89. I messed up in the title. I'm having an intermittent issue with it bogging down on me. Let me start by saying that I do currently have the Instrument Panel issue that's supposedly common with these trucks (Completely dead- Fuel gauge pegged on full, etc..) but I doubt that's part of this problem as I've been driving it like that for several months before the bog issue started.
I'll be driving along, usually for quite a while 30-45 minutes around town when suddenly it'll just lose power. If I pull over and try to rev it, it will only rev a little bit (no tach) then bog heavily. If I turn the truck off and restart it, it will often go back to normal driving conditions for a while. A previous forum said it was likely the O2 sensor so I changed that but it didn't fix it. A friend who had the same issue on his Frontier years ago said to change the Knock Sensor. The ones at the parts store were $100 but on Ebay I could get them for $6 so I ordered two, just in case. I replaced it (bugger bear of a job as you have to remove the throttle body to get to it) and it seemed to be ok for about a week. Something told me to get off the highway and sure enough, moments later it happened again. I put the spare Knock Sensor on and re-positioned it to the intake manifold this time in case I have to do it again. I didn't get five miles down the road when it bogged down again.
Could it be something as simple as the fuel filter? Or did I get a bad knock sensor out of the box, do you think? Or perhaps one of the other sensors? Oh.. the code that it was throwing at first was "Coolant Sensor Circuit Failure". I replaced the coolant sensor but the code stayed. The check engine light went off on it's own after I changed out the first Knock Sensor, though. After the second failure, the code was, "Manufacturer Code Fault". When I put the new KS in, I reset the codes since it didn't automatically reset like last time, figuring I'd get a fresh go at it. No codes have popped up after this last failure, though. The check engine light hasn't come on, despite the bogging issue.
Sorry for the novel, I figured I'd try to get it all in on the first post. Any advice would be helpful. I'm planning on changing out the fuel filter today and another of the cheap KS's has come in so I might just put it on, too.
Many Thanks!
