I got work tomorrow morning and need this!

[studmobile]

1997 4.0 4wd ranger. So I replaced the gaskets on my upper intake manifold, took me a little while, stripped a stud and replaced it with a bolt instead. Hope thats not the reason, so after reinstalling everything and cleaning almost all parts I started it and it idled fine, I let it run for about five minutes just to warm up and as soon as I got in and touched the gas I felt what seemed like a miss. I checked all my connections everything seemed fine, but still had a noticeable hiccup and soon developed even at idle. Driving around the block was a struggle and was ended quickly because of the intense miss. So I also hear a small whistle, I assumed this was another vacuum leak but upon spraying all connections with carb cleaner I did not see anything. Any help would be appreciated. If noone has any ideas I guess Im just starting with fuel filter and plug wires. I checked my firing order, it was all fine. And plugs were done around 7k ago. Hoping its something relatively easy because after burning half a day replacing parts I now am ready to set fire to my truck.

 

[n_grimm]

Did you unplug any injector connectors while you had it apart? I accidentally bumped one, it was barely making a connection so the problem would come and go.

 

[Grey_04]

Did you unplug any injector connectors while you had it apart? I accidentally bumped one, it was barely making a connection so the problem would come and go.

agree been there done that

 

[redneck_rainey]

have u tried cleaning your MAF sensor. takes ten minutes and can be a real lifesaver..

 

[kman]

check your air intake if there is a hole after the maf it will cause it because its getting to much air and not enough gas this just happened to me

 

[envious8420]

defiantly chase the whistle sound and spray the upper and lower intake sealing surfaces, sounds like an oring has slipped on reassembly.

 

[AaronC]

I've had the same problem before on 4.2 F-150. I had a vacuum leak originally and it was throwing lean bank 1 and 2 codes. I found the leak with carb cleaner, it was the plenum gaskets. I replaced them and followed the torque sequences. I had a worse leak. It ran like crap. It sounded like a miss.. I ended up checking around everywhere again with carb cleaner. I found nothing. The next day I went out and looked more. One of the ports on the plenum was leaking. I ended up pulling it all back apart and using gray RTV as well as the gaskets and I torqued 5 pounds more then required. The problem was resolved. Sometimes you just have to fight with these things. You obviously know what to look for. You have a better chance of finding it then us guys behind keyboards.

My only question is.
No codes at all?
Do you have a OBII reader that shows sensor out puts?