PI cam+PI intake=problem!?

[bert96]

i got a gt 1996,i changed my intake and my cams,but now when i take my car for a ride, it's like my car don't have enough gas,if i gave gas very slowly it's ok but when i jump on the gas i have some hesitation,but when i rev it in neutral everything is fine,could it be my fuel pump?

 

[Dusstbuster]

Did you get your car dyno tuned after putting the new manifold and cams put in?

 

[bert96]

no,but i forgot to say,the car don't do that all the time.

 

[Built98GT]

Get a dyno tune. problem solved

 

[bert96]

i thought a dyno tune was not require,i read a lot of on that subject and i never read that,they all said a tune would help to get more hp but not require.Are you really sure?

 

[COramprat]

The tune will just get you the best for the setup. You shouldn't have hesitaiton problems. Go back and check all of the vacuum lines, make sure they are OK. Also check the sparkplug wires to ensure they are OK...plugs too.

How did you mount the intake?

 

[DTNODYA]

I am gonna make a guess only because my truck recently was doing something similar (it's stock but regardless...). Turned out my camshaft position sensor took a crap. I have no idea how this works on our cars but I thought I'd throw it out there.

 

[DropTopPony]

how did you install the intake to the heads? RTV or Adapter Plates?

 

[Pennywise2]

The tune will just get you the best for the setup. You shouldn't have hesitaiton problems. Go back and check all of the vacuum lines, make sure they are OK. Also check the sparkplug wires to ensure they are OK...plugs too.

How did you mount the intake?

+1 the PI cams will not give you problems.It is most likey the
PI intake.Double check your work and see if anything doesn't
look right.If nothing is wrong with the install get a dynotune ASAP.
Of what method did you install your PI intake?

 

[bert96]

A little bit of RTV,i have no leaks,as i said, the engine work fine in neutral,weird?! and sometime it runs fine sometime not.

 

[DropTopPony]

did you have the battery unhooked while doing the install? if not unhook it for 10-20 mins so it can reset the computer.

 

[MaxedGT]

It should still run fine without a tune. Fix the drivability issue first then get a tune. A tune isn't a must.If it's missing, it's likely spark plug wires. It would be easier to help you if you gave a better description of your symptoms. Does ot buck or just heitate then go? Or is it just lacking power but smooth? Sometimes when the wires are going you can even hear like a ticking noise, as the spark is jumping. Need more info.

 

[Pennywise2]

It should still run fine without a tune. Fix the drivability issue first then get a tune. A tune isn't a must.If it's missing, it's likely spark plug wires. It would be easier to help you if you gave a better description of your symptoms. Does ot buck or just heitate then go? Or is it just lacking power but smooth? Sometimes when the wires are going you can even hear like a ticking noise, as the spark is jumping. Need more info.

True old spark plugs,spark plug wires, or bad coil packs can possibly
be the culprit.
Good luck I hope you fined the fix.

 

[bert96]

I have 10.4mm taylor spark plug wires and screaming demon coils,the thing i don't understand is why does it just happen when i drive the car,when the car is in neutral i can rev it at 6000rpm with no problem,when i drive the car and when the problem occur it's like i don't have enough fuel or i have my timing off(remember the time when ford have vacuum advance?)it's like the vacuum advance is off and on!!! of course if i had one!

i drive the car yesterday for about 30 miles,and the engine was running great.At first i thought i had a bad tank of fuel but now i know it's more than that.I really don't know what i should tell you to explain more than that.I hope some will help me to solve this problem.

 

[bert96]

did you have the battery unhooked while doing the install? if not unhook it for 10-20 mins so it can reset the computer.

Yes,the battery was unhooked,and i have no MIL

 

[COramprat]

Revving up while sitting is different than rolling because you are loading it up while in gear. It is more of a hesitaion than a miss right? Did you make sure the plenum and TB have a good seal?

 

[whty98]

When your car is in neutral, there is no load put on the engine, which means less fuel is used. When you put your car in gear, load is put on the engine, requiring much more fuel. Check your fuel pressure, you may not have enought fuel, or you might even have a clogged fuel filter, these all could cause hesitation. BTW, I have a 98 GT and I want to hook up PI cams, I think I know how to do it, but do you have a complete guide or walk-through for it, what tools did you have to use to make it easy.

 

[whty98]

Oh ya, also your fuel injectors might be clogged. Either take them off and get them professionally cleaned, get new ones, or just fuel injector cleaner(start with this one).

 

[bert96]

When your car is in neutral, there is no load put on the engine, which means less fuel is used. When you put your car in gear, load is put on the engine, requiring much more fuel. Check your fuel pressure, you may not have enought fuel, or you might even have a clogged fuel filter, these all could cause hesitation. BTW, I have a 98 GT and I want to hook up PI cams, I think I know how to do it, but do you have a complete guide or walk-through for it, what tools did you have to use to make it easy.

What pressure sould i have? and i think i will change my fuel filter in the same time.I will also check for(again)my plenum!
For the cams i bought the retention tool from AFM, but a good piece of wood will do the same job for free! and for the guide i did alot of research on this site and on corral.

 

[bert96]

Oh ya, also your fuel injectors might be clogged. Either take them off and get them professionally cleaned, get new ones, or just fuel injector cleaner(start with this one).

I will do that too!