Hey guys, Iv searched and done everything other people have done, and nothing has worked. Car hesitates all the time. It will lose all power and then just kick back in and jerk. This is my GFs car and Im at a loss now...

Its a stock Y7 and I have replaced:
Plugs
Plug wires
Fuel filter
Air filter

Cleaned:
Throttle Body
IACV
Injectors (cleaned screens)

Throttle cable is good, fuel pump primes fine.

ANY IDEAS?

 

Same issue i had a week ago, i checked the distributor cap and then moved it aroun (made it worst) then i took it to a real mechanic and he messed with the dizzi(is that how u guys call it?) and set the ignition timing right, and bammm! full powwaaa! i have a d16z6 tho.

 

I see, thanks for the info. Did he replace the cap or rotor on the dizzy?

 

nothinig was replaced, just a oil change after, he checked spark plugs and wires but were good, he said cap might need to b replaced, but i havent done that.

 

check your timing like stated.

check for good exhaust pressure out of your muffler when car is hesitating.

any weird idles?

any check engine lights?

does the car sound like a lawnmower when hesitating? (like putt putt putt)

or is it a true lack of power where the engine is runs smooth but feels like a geo metro performance wise

 

Definitely inspect the contact points inside the cap and on the rotor. Replace or clean as necessary.

Pay attention to waaBAAH. He offers good advice.

 

any check engine lites? check ur cranklposition sensor, i get alot of those going bad on eks` here lately

 

1. Alright, I checked the Cap and rotor and they look clean but the rotor has a little wear on it, to be honest I have no idea what too much wear looks like.

2. Ill set/check timing tonight

3. No CEL on & no strange idle, it only hesitates when pulling

4. When it hesitates, yes it feels like a Geo Metro but no strange sounds. It is exactly as if I took my foot off the gas for 2 seconds and then stomped back on it. And the car jerks as the power comes back.

 

Sand the contact point to clean shiny metal with fine sand paper. Do the same for the contact points inside the distributor as they tend to corrode.

 

check the fuel pressure

 

is this WOT (wide open throttle) or is this half throttle?

does the car pick up faster at half throttle? or less gas pedal action?

 

low back pressure?does it only happen in first gear?it happens with big exhaust when u get on and off the throttle in 1st.

 

thanks Ron.. i learned almost everything from reading here on H-T.. and of course owning hondas that constantly break down.

 

it doesnt happen at wot, happens most of the time when in 3rd or 4th and light pressure on the gas or when going up a hill. not sure what you mean in the second part of your post.

 

this is my gfs 96 cx hatch, not my b18c eg. she has the stock exhaust, the car is 100% stock.

 

you can try pulling codes eventhough yoru check engine light isnt on. a code might be "pending" but still within the requirements.

the second part of "does the car pick up faster at half throttle" basically was me thinking your car was slow at full throttle. sometimes the MAP or TPS sensor will give wrogn readings which floods the car with gas resulting in a bogging effect. then when you let off the gas to where your 80 percent on the gas (instead of 100) you will get the correct mixture resulting in more power.

the next step would be to look at some readings of some of your sensors when this condition happens. scanner would be best option but might not be easilly accesible for you.

you kind of need to see the o2 readings to see whats going on... is your motor running lean? rich? the o2 sensors will help you diagnois this.

can you get a scanner?

 

i had the same problem then a techician so that my battery was not grounded right

 

anyone has this problem when i am driving normal my car does not smoke but when i accelerate to get on the freeway thats when it smokes it look like white smoke to me there is no oil in the coolant or coolant in the oil no loss of power. but when i drive hard and stop the coolant resovier is empty i just had head gasket replace the head check at a machine shop and also piston rings replace. and also the pcv valve keep getting clogged

 

I had a very similar problem with my LS swap coupe. I checked many of the same things that you have with no avail. It turned out my Map sensor was bugging out, replaced it and the car ran like new.