Ok 2 days ago I was driving down the highway everything was fine and all of a sudden it felt like I lost power for just a second and then it was gone. It did it a few more times after that and I noticed it seemed like it would do it right after I gave it some gas and let off and there it was I would feel that power loss again just for a second.

So say I was in the middle lane and went to the fast lane to get around a car I would just apply alittle gas till I got in that lane and then let up to stay with traffic well as soon as I let off on the gas it would happen. Just sorta like turning off the engine for a second.

Then today it was still doing that and once I got off the highway I came to a stop light and had to wait for a red light and as I was waiting it stalled. Not like a chug chug stall just flat out quit. Turned the key and it started right back up no problem took off and all was well.

On the way home on the highway tonight I noticed it was trying to up shift when I was doing like 65-70. Almost like it was going to go into passing gear but it would come right back down and I was just maintaining a steady speed. It did this a bunch of times.

Any idea what could be going on? The check engine never came on so I could check the codes either. It did seem to start doing this after it was warmed up.

Please Help.

Edit by Mod: Paragraph, meet igotskills. igotskills, meet Paragraph. PLEASE try and put some sort of organization into your posts. It makes them much easier to read.

It would be really helpful if you told us what you are driving.

We are good, but we can't quite see your rig through our monitors.

Michae

You make a great point. It is a 1998 honda passport. 4x4. Sorry about that.

When is the last time you changed your fuel filter? Completed basic tune-up?

Weird story for sure. Did you mean to post a Honda problem in the Isuzu forum?
Brian

A "Honda" Passport is just an Isuzu Rodeo with different badges. They both came off of the assembly line about 30 miles from where I grew up.

I agree that the gas filter should be replaced first. It's on the frame rail under the driver's door. The gas line is under pressure, so read up on how to replace it first.

I had some misfires and stalling due to a short in the electrical harness. It was a thermal breakdown - only gave me problems during hotter outside temps. Monitor if it is temperature related. Does it happen during bumps in the road? It's not common, but a few Rodeos/Passports have faulty harnesses.

Also, a leaky intake manifold gasket can cause stalling and uneven idle. This is a common issue with our trucks with the 3.2 V6. Has that been replaced? Mine was replaced under warranty, but I'mn sure your's is out of warranty by now.

Pete

Ok sorry it took so long to reply but here is a update. First of all I came out of work today and my battery was dead I got a jump and it fired right up and stayed running so I no my alternator is fine. On the way home it was doing that staying in passing gear thing. When I got home I put it in park and gave it just a touch of gas to rev it up for a second before I shut it off and it went way up to around 3000 rpms and stayed there for 5 or 6 seconds before it even started to come down and it even went up a little one time and I never even touched the gas. Weird. So I shut it off and tryed to start it again and it just clicked. The battery is shot. I am hoping that will have something to do with it but if not what do you think about the throttle position sensor? I am just trying to come up with something. It can't be anything very big because it starts up and drives fine except for the switching gear thing and it does not do that all the time. The drive home is about 5-20 minutes so I no it would have had enough time to start to charge. Thanks for your help.

I would start placing bets on the alt and/or battery.

Start with a new battery (might as well fix a known problem before troubleshooting the unknown) and get the alt tested while you are at it.

Alternators do not die in a binary manner. They work, don't work and then sometimes work somewhere between those two points. It may be putting out enough (or too much, hence the dead battery) to power the truck, but the TCM is not happy and the tranny does not shift properly.

Got any strange dash lights? What does the engine do when you turn on the head lights and heater fan to hi at the same time?

Michael

Sorry about that, I didn't know about the Passport/Rodeo correlation. The alternator in one of my Troopers keeps the engine running when I pull the battery cable off even though it has a major malfunction. Not sure if this is a definitive test.
Brian