acceleration hesitation

[rawhead]

from a stop when i start to accelerate it starts really slow and then it starts to speed up after about 2500 rpms i can't do a burnout(even when i hold the break and i cant get above 2000 rpms) in first gear but i can bark gears going into second for some reason. I am not getting the power i should be at the take off. I was wondering whether what would be causing this....perhaps the timing? I am not sure...Also i would like to know would whether it would be better to just take off both catalytic converters or just replace one that is broken?

 

[srothfuss]

Dump the codes... That will give you the area to look in. You can also do the cylinder balance test when you are dumping the codes to tell you if there is anything physically wrong with the engine

 

[dls322]

what is "dump the codes"...my engine does the same thing, It seems to take too long to go through the rpm range

 

[dstanggt50]

I would also chk the codes, you can get a cheep code scanner, and it comes with insturctions. You can do koeo, and koer and reference the codes with the manual, will give you an idea as to where to look. The cylinder balance test revs up the engine and turns off each injector one by one to see if there is an inj problem. Other areas to look at are tune up(plugs, wires, cap, rotor, fuel filter, ect..) checking for vacuum leaks, cleaning maf or checking voltage if you have access to a scanner that can do that.

 

[srothfuss]

To find out how to 'dump' the codes search for the the word "codes" in the forum and you will see many threads on how to do it.

Trust me it's super easy. You will only need a 3" piece of wire to connect the two connectors near the brake booster. It'll take about 5 minutes for the whole test and it'll tell you everything you ever wanted to know about your motor.

Edit: I helped you out and did the search for you. Scroll down until you see the member JRICHKER. Read his post and follow those instructions.

How to dump codes search

 

[HISSIN50]

Also, a sig really helps people to help you. Different recommendations are made based upon different components we see in your sig (or that you post in the original post).
If you have a SD car, you will need a test light to dump codes (no functional CEL) or a code reader.
Good luck.

 

[90mustangGT]

You said you have a broken cat? Fix that first. I would fix it with an o/r h or x pipe, maby even a prochamber. It's really hard to determine what you car is doing, I mean really difficult. It could be anything between the bumpers.

 

[dls322]

Great Thanks for the tips

 

[Aliate X]

Do you have to have a code scanner when doing the clyinder balance test? Can you guys explain this more? What kinda problems would you find?

 

[HISSIN50]

you dont need anything but a paperclip to do a CB test. It will monitor the injectors (cuts one at a time and 'listens'). If the test fails, it can retest up to twice more using different parameters to evaluate the situation.

It is a useful test if one has a miss or loss of power issue.

 

[Aliate X]

i still dont understand though, what exactly do you do? Pull the plugs off the injectors one at a time or something??

 

[HISSIN50]

i still dont understand though, what exactly do you do? Pull the plugs off the injectors one at a time or something??

You dont do anything but let the puter do the test (you have to blip the throttle a time or two, but not much else). The puter cuts the injector pulse to each injector, one at a time. Then it notes the RPM drop from cutting the injector being shut off (if no RPM drop happens, that cylinder is not firing correctly).

Good luck.

 

[Aliate X]

You dont do anything but let the puter do the test (you have to blip the throttle a time or two, but not much else). The puter cuts the injector pulse to each injector, one at a time. Then it notes the RPM drop from cutting the injector being shut off (if no RPM drop happens, that cylinder is not firing correctly).

Good luck.

Thanks but I actually found my hestation problem about 15 mins ago, Im so happy now, it used to hesitate so bad, I was putting down 16 second and up ET's. Now it runs perfect, my MAF was dirty as hell and so was my air filter. Thanks for the help though.

 

[HISSIN50]

Glad to hear you got it fixed.