plzz help 95 S-10 sluggish acceleration /good midrange/ good full trottle

[angela_41465]

We are having major problems with our truck. It runs fine when giving it the gas at a good pace or midrange but when u slow or luge it it starts missing and almost dies on you. wve had it put on computer 3 times first time the man say a gas pump so we did , 2nd time cooling sencor or something like we tred it ,that this is all in a matter of a week so we have put on a new fuel pump, fuel filter, new plugs& wires new egr valve, new air filter, fuel treatment, fuel injector treatments, weve rechecked the plugs making sure there in tight , the coil pack,new oil change , dont no what else to do .. Can anyone plzz help asap. so here it is again 95 S-10 5 speed 4 cyl oh also they was the computer also said there was a after market piece on it he took off and also was suppose to fix it but it didnt.

plzz help

[jackass#1]

how about cap and rotor? what was the aftermarket part he took for for repairs?

[angela_41465]

Originally Posted by jackass#1

how about cap and rotor? what was the aftermarket part he took for for repairs?

this truck has a coil pack. Today when I was on here seaching for the answer I seen to check the rot- and the cap and I was told that this truck does have one it has the coil pack instead.The after market part was something for the speedomter but wasnt needed..

[drdd]

does it smell like fuel under the hood? strong odor?

Originally Posted by angela_41465

We are having major problems with our truck. It runs fine when giving it the gas at a good pace or midrange but when u slow or luge it it starts missing and almost dies on you. wve had it put on computer 3 times first time the man say a gas pump so we did , 2nd time cooling sencor or something like we tred it ,that this is all in a matter of a week so we have put on a new fuel pump, fuel filter, new plugs& wires new egr valve, new air filter, fuel treatment, fuel injector treatments, weve rechecked the plugs making sure there in tight , the coil pack,new oil change , dont no what else to do .. Can anyone plzz help asap. so here it is again 95 S-10 5 speed 4 cyl oh also they was the computer also said there was a after market piece on it he took off and also was suppose to fix it but it didnt.

plzz help

[OverBoardProject]

I've seen a plugged PVC valve cause simular problems, and I don't see it on your list.
A PVC valve is a 1 way valve most likely on a valve cover (with a hose going to the air filter or intake manifold) If you can blow through this valve 1 way but not the other it's still working. Blow out the line too I've see them plugged right up.

Plus Oxygen sensors can cause havoc if they are plugged, although the computer should sense this problem.

[angela_41465]

Originally Posted by drdd

does it smell like fuel under the hood? strong odor?

no it dont have any smell at all to it. we have checked everything that we no now we have also since i last posted the IAC valve and still not fixed it . any more sugg? plzz advice

[bigd7315]

Originally Posted by angela_41465

no it dont have any smell at all to it. we have checked everything that we no now we have also since i last posted the IAC valve and still not fixed it . any more sugg? plzz advice

try a tps sensor if it it bad the timing will be off till you get to the right point of accerlation another thing is the intake around the egr is it carboned up at all if so this will cause it another is a cat got to a local muffler shop and tell them to perform a cat temp test they will do it for free most of the time to try to sell you a cat let me know what that gives u

[angela_41465]

Originally Posted by angela_41465

no it dont have any smell at all to it. we have checked everything that we no now we have also since i last posted the IAC valve and still not fixed it . any more sugg? plzz advice

Thank you very much for your help. We havent checked that yet but we will. as far as the Cat its gone its been taking off already!
I will get back to you and let you no.

[jonnoboy]

try a different shop, sounds like unnecessary things have been changed. things that would either be tested before replacement, or nothing to do with your driveability problem. probably something simple. if i had to guess, by your symptoms, first thing i would have checked would be egr valve and related parts as these are mainly in play during part throttle conditions, good luck- jon

[mikendeb1202]

Try this before you spend anymore money.
If you or someone you know has any mechanical knowledge at all, this is very simple to find the problem. I already went through the same problem, and I'm a 20 yr experienced technician.
First, it is probably your computer thinking it is in 4 low.
There is a control module behind the passenger side kick panel - unplug it and see if it goes away. if it does you need a new control module called a TCCM(transfer case control module).
If unplugging it does not stop the problem then it could be 1 of 2 other things- the signal wire from the TCCM to your VCM(vehicle control module), or the VCM itself.
You can verify that by removing that circuit from the VCM. That would be connector 4 (black connector), pin 23, a gray wire with a black stripe. If you remove that wire and it STILL has the problem, then it's got to be the VCM.

Pass this info along to a technician if you don't know anyone personally that can try this.

Mike n Deb

[OverBoardProject]

This is again an almost 5 month old post.

I really hope that these problems are fixxed properly now.

I know that he means well, but someone brought old threads to the top. You might want to check the thread date for the next day or 2