IH8MUD™ Forums - View Single Post - LX450 has NO Power going up the Grapevine

malmon · 05-12-08, 12:06 AM

Hello and help.

I have a '97LX450 (with about 110k miles) which is not being used regularly because of the present gas price situation. BTW, the HG has been replaced sometime ago.

Anyway, I used the truck a couple of weeks ago to go to LA from SF. The drive from SF up to the foot of the Grapevine was uneventful. A little slower than what I am used to with it but at that time, no big deal. When I started going up the grapevine, I started to notice the truck loosing power. As I went higher, the more it got worse... and to top it all, it started to heat up (even with the aircon off). The power got to be so bad that I had to "crawl" using the truck lanes going up.

When I got to the low lands, it started to get more power...similar to the power I had from SF to the foot of the Grapevine.

Any ideas on why this happened?

I was reading on some previous posts and somebody mentioned the O2 sensor. Is this possible?

05-12-08, 12:06 AM	#1
malmon IH8MUD Rookie Join Date: Sep 2006 Location: CA Posts: 40	LX450 has NO Power going up the Grapevine Hello and help. I have a '97LX450 (with about 110k miles) which is not being used regularly because of the present gas price situation. BTW, the HG has been replaced sometime ago. Anyway, I used the truck a couple of weeks ago to go to LA from SF. The drive from SF up to the foot of the Grapevine was uneventful. A little slower than what I am used to with it but at that time, no big deal. When I started going up the grapevine, I started to notice the truck loosing power. As I went higher, the more it got worse... and to top it all, it started to heat up (even with the aircon off). The power got to be so bad that I had to "crawl" using the truck lanes going up. When I got to the low lands, it started to get more power...similar to the power I had from SF to the foot of the Grapevine. Any ideas on why this happened? I was reading on some previous posts and somebody mentioned the O2 sensor. Is this possible? Last edited by malmon; 05-12-08 at 01:53 AM.