Not only cheap, but also does an outstanding job. In addition, he furnishes a complete before and after analysis of your injectors, so you can see what was found.

 

Yeah I did a LOT of replacing stuff on my car, spent over $5K in changing/replacing all that bull**** with the exception of the injectors...

I just ended up getting rid of my 93LT1 and instead got what I have now.

Good hunting folks! This is a wonderful thread, lots of possibilities for the same symptoms.

The only thing I would suggest is to do the easy stuff first, bottom-line by replacing the easy stuff you miiiight get lucky and solve your dilemma, and if not, well then hey at least you are replacing stuff that you would normally be replacing anyway.

 

I've been recommended this company: http://www.cruzinperformance.com/

 

Well, after building up a new motor with all new sensors, save MAF, after 500 miles the dreaded hesitation syndrome has hit us too.

New injectors
New fuel pump
New fuel filter
New ICM
New Coil
New Opti
New CTS
New Knock sensor
New IAT
New TB, TPS, IAC
New plugs, wires
New oil pressure sending unit
New motor (heads, intake, short block, cam)

Here is a link to the datamaster file

click here



More data to the mix.

 

i did a few free mods. ICM cooling and i just cleaned my MAF today. Its like driving a new car now and there is absolutely no hesitation/stumble anymore.

 

Resolved. The plugs had only 500 miles on them and were shot. We were using Delco R44LTS plugs. We used the multimeter to test the resistance of each plug as they were removed. A couple of them had really really high resistance > 50kohms (one of them even appeard to have an internal fracture that caused it to loose connection all together); the otheres were in the 5kohm range.

We replaced them with Autolite AP106s, gapped at .036. When installing them we checked the resistance of the new ones too. All came in at 5kohm.

So thats that, hesitation and chug-a-lug is gone.

 

what is everyone setting there plug gap to? and what plugs are yall using..
i have a 93 TA and it have the same thing... it feels like all the low end torque is gone.. i have SVO 24#'s and a new FPR going in this weekend and im going to redue the intake gaskets and seal the **** outta it...
ive been using the NGKTR55... and i think they are my problem... im going to try ACdelco's and see what happens...

 

anybody else try anything new yet????

 

Didnt know you could ohm check plugs thanks for the info.

 

Im bringing this thread back to life.. I have the same problem that you all have

Idle goes up and down when car is in normal temp not when cold.

Things ive Done:
New IAC
New IAT
New TPS
New Fuel Filter
Cleaned MAF
Cleaned MAP
Cleaned TB/Intake (seafoam)
Changed oil
Checked Spark Plug Wires
ICM/COIL Cool Mod

No luck yet

 

Hey guys I had the same problem and originally I learned that it was because of a vacuum hose on the back of the engine. I was told to pull the hose off and block it with a screw. I have never had that hesitation since. 3 of my other friends have camaros and they had the same problem and this fixed it. Just a thought... there can be so many things to cause hesitation as I read through these 29 page postings haha.

 

lol.. I had the opti changed and its working like a charm now

 

I cant let this thread die. It like six years old and talks about one of my problems.

Could someone please finish the following sentance for me???

I got rid of my intake backfire (pop underhood) when give it lots of gas below 2k rpm by doing............................................. .....

 

check ECT-use a scanner -also, think about replacing the MAF Screen if you have removed it and this problem occurred about 2-3 weeks later

 

What is ect? I dont have screen in the maf never did and car never did run perfect? I am not convinced that it is the maf becasue it does it in speed density mode also.