Spit and sputter at 2k

[89PBR96]

Still being a pain in the ass the hotter it is out the worse it is

 

[89PBR96]

When I unplug the Mass air while running shouldn't the Idle change? I think the truck just needs a 302 carbed motor I wish this thing would just fix

 

[89PBR96]

When you unplug it the CEL will come on & the engine should die or be real close with the rpms being extremely low.

Light comes on but it doesn't really idle low I will re try it and see I only let it idle unpluged for a few long enough to walk to dash and back to check for the engine light

 

[dizman]

had a similar problem with my old mustang get your fuel pressure checked it sounds like thats the problem best way is to get a gauge with a long tube so you can drive the truck and see what the gauge is doing

 

[89PBR96]

What is the Pressure supposed to run I got a gauge to test it Thanks

 

[RANGERSQUARED]

Having the similiar problem with my 2000 3.0L. Runs better in morning. Runs like crap in afternoon. Been worse lately as temp has been over 90 in Ohio lateley. If I put it in gear shortly after starting it bucks. If I let it idle for a few minutes it is better. Under acceleration it buck and misses.

Have used 2 different scanning tools and neither show any codes. Doesn't even register the mis.

My brother had a similar problem with his E-150. Scanner did not register anything. Turned out to be a bad coil. (COP) type.

 

[modelageek]

Having the similiar problem with my 2000 3.0L. Runs better in morning. Runs like crap in afternoon. Been worse lately as temp has been over 90 in Ohio lateley. If I put it in gear shortly after starting it bucks. If I let it idle for a few minutes it is better. Under acceleration it buck and misses.

Have used 2 different scanning tools and neither show any codes. Doesn't even register the mis.

My brother had a similar problem with his E-150. Scanner did not register anything. Turned out to be a bad coil. (COP) type.

it could be a lot of things but since there are no codes i would suspect a fuel delvery issue.......change the fuel filter and if that does not do anything do a fuel pressure test...........if that was my truck i would bring the maintenance up to date . including cleaning maf and iacv as well as changing pvc.

 

[Stxrangerbumper]

fuel pressure 40 psi engine off and 35-36 psi engine idle

The Fuel Pressure Tester Kit works on most domestic fuel injected vehicles having a Schrader valve test port on the fuel rail
To have a good truck that works just lane always do a tune up.
1 time in three months, to clean all good sensor that cleans easily and you'd never a problem

your engine does back-fire by slowing down or pressing the accelerator?

 

[modelageek]

Stxrangernumper. That is the wrong fuel pressure for the 2000. That is the FP for a 1997 and down

 

[TomB1269]

Having the similiar problem with my 2000 3.0L. Runs better in morning. Runs like crap in afternoon. Been worse lately as temp has been over 90 in Ohio lateley. If I put it in gear shortly after starting it bucks. If I let it idle for a few minutes it is better. Under acceleration it buck and misses.

Have used 2 different scanning tools and neither show any codes. Doesn't even register the mis.

My brother had a similar problem with his E-150. Scanner did not register anything. Turned out to be a bad coil. (COP) type.

You are different then the poster. You have a snycronizer were the distributor was, and most likely you are getting a belt like squeal that sounds like it is comming from the back of the engine. No Codes, Mis-fires over 2500 RPM and belt like squeal are signs pointing to the syncronizer shaft failing.

 

[RANGERSQUARED]

You are different then the poster. You have a snycronizer were the distributor was, and most likely you are getting a belt like squeal that sounds like it is comming from the back of the engine. No Codes, Mis-fires over 2500 RPM and belt like squeal are signs pointing to the syncronizer shaft failing.

Replaced syncronizer shaft less than 3,000 miles ago. A seizing syncronizer can/will cause a CEL and store a code because the CPS doesn't rotate smoothly. Had no drivability problems at that time just the squeal and then the CEL with code.

Current mis like symptoms started about a month ago.

MAF has been cleaned, IACV has been cleaned, new PCV, new fuel filter. Plugs and wires are less that a year old.

 

[modelageek]

I guess you didn't like my suggestion

 

[modelageek]

The MAF could be bad.see if you can catch a pending code

 

[89PBR96]

The Fuel Pressure is where it needs to be I got a friend that can plug into the computer and see if we can find anything out.

 

[modelageek]

The Fuel Pressure is where it needs to be I got a friend that can plug into the computer and see if we can find anything out.

what was the koeo pressure? how many cycles to get there? what is the koer pressure? how much did the pressure drop in 5 minutes after you turned it off?