sorry to jump in here but I would like to hear your experienced opinions on my situation. Let me preface by saying that I'm not a mechanic (but very technical) and would graciously bow to the vast experience congregating here.
I am having similar problem with my 91 LS400. The car was parked for a couple of years with monthly start-ups and round the block runs to give it "semi" workouts. Then it got a good 300 mile run about 2 months ago. During the trip it would act like it was running out of gas and just quit. Pull over and after a few minutes it would start and go. This happened dozen or so times during the 4 day trip.
After returning and sitting a couple of weeks, when it was started up again it wouldn't hardly make it out of the driveway. It has been that way ever since. So when started, it acts like it is going to run out of gas but will stay started and run at idle. Attempts to drive round the block result in barley topping 15 MPH. After warming up it seems to run a little better. When the RPM is raised to about 2500 the roughness seems to level out. check engine light is on. Carried it over to have analyzer Hooked up and it gave the codes of 24 Idle Air Temp sensor (understandable...a hose was leaking giving a vacuum leak) and 41 Throttle Position Sensor (moderately $$)
I have read all of your replies to this topic and am wondering the following:
I have decided to part this car out. There is nothing wrong with it (just needs some basic TLC) but the value seems to be 2-3K and everyone who has responded is looking for a 2-3K car and therefore it is not the car for them. I am sure you understand what I mean. 18 years old etc....
I am certain the problem is not mechanical but electrical/sensor.
In parting it out, obviously I can't sell the engine saying, "hey I think it's good but...."
With your experience in these matters how would you deal with this?
1) sell as is...hoping to get someone who will accept it with those circumstances? I MEAN HOW DETRIMENTAL IS THIS PROBLEM TO THE OVERALL ENGINE AFTER COMING OUT AND GOING TO SOMEONE ELSE?
2) spend money and time....replace sensors...and hope that fixes the code...only to sell the parts?
3) spend money and time...replace sensors....and continue to T-shoot issues as they arise (very possible) only to invest more money and time in something that is going to come apart?
4) Is there kind of way to sort of.... fool it....to see if that's really the only problem?
Please be kind in your replies to what may seem like stupid questions. LOL
And oh yeah...could anyone point me to a parts list?
Regards and Blessings,
Lisa