The truck recently started acting up in the last 2 days. Yesterday morning when I started it, it idled rough, and not as high as it usually does, maybe around 900 when its usually in the 1400 range for a cold start and 70 degrees ambient. Then as I am driving, coming to a stop sign or a light, when I push the clutch in, the rpms drop much quicker than usual, and the truck dies, or fights back from 200 rpm and idles low at about 400 rpm. It also seemed like having the brakes on while decelerating may have had an effect.
I know there is something that cuts fuel when off throttle, but I dont know if that is it.


thanks for any help
Dennis

Do a visual on your vacuum lines to make sure they're on/not split. Do any maintenance on it lately?

my son and you have the same problem but it's intermittant and so far tough to get a meter on. He immediately replaced the fuel filter, plugs and wires and rotor and cap. next the engine coolant water temp sensor and now a throttle position position senson (TPS). unless we have two problems, this problem of ours started with a slight drop in RPMs (10-20%) At idle and once in a while while on the highway.It was so slight a drop at that speed momentum covered the problem. We immediately thought about fuel problems, then the ignition system and now into the least expensive possible sensors that are listed in the Trouble Shooting Guide in the Factory Service Manual <fsm>.(2nd link on main index on this site).
We started with the Engine Coolant Temp Sensor because of a previous minor loss of engine coolant,the rough idle and loss of power when under load issues. Now on to the Throttle Position Sensor (TPS). Both around $100. My sons recently purchased hid truck. It's rust free, stock equipment and now on a Maine island doing lobster fishing work. With a rebuilt engine (fire under hood when truck had 100K miles).Presently 140K with lots of life left. So far we just can't catch a code while in the shop. To the lobsterman his truck is comparable to the farmers tractor. Not looking forward to the mass air sensor ($700+). Next step to the Dealership (90 minutes away). Trying to avoid it till after the fishing season (6 to 8 wks). We'll see.
I'll keep watching your thread and sharing on mine. 22RE

Good gawd dude, get a MAF from someone here or fleabay. <img src="/forums/images/graemlins/zombie.gif" alt="" />

The only work I have done is an oil change and replacing my broken down K&N filter with a stock paper filter.
I did notice yesterday that its starts doing it after I let it sit and idle for awile. Maybe 10+ minutes. I let my wife sit in the a/c while I was waiting for some carry out on sunday for 15min or so, when it started dying at stop lights, then yesterday I sat and talked with her at work and let the truck idle for 15+min again, and it started dying again.
Then after I let the truck cool down, it is fine.
In the mean time I turned the idle screw 1/2 turn to raise the idle a bit. Hopefully it will help the truck recover when the rpms fall off coming to a stop light.