The whole motor was rebuild recenting but its having a little trouble. it starts right up but when i put it in first gear and then press on the gas and try to drive it. it would go a little but it hestitate then the motor turns off. what could it be!?!? please help

 

How is the idle??? Check fuel and vacuum lines for starters.

 

when i start the motor it idles up and down for like a couple second then the idle stays about below the 1 rpm. what do u mean check the fuel and vacuum lines for starters? let me know please

 

Check any fuel and vacuum lines for leaks, more likely Vacs cause if it was fuel it would cut off and not allow you to really drive it around. That or change fuel filter... if the idle is varying at start up it's either not getting the right fuel or air to maintain a normal idle. Do you have an SAFC?

 

okay so i did a Diagnostic Trouble Codes check on my car and this is what pulled up.
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected

which means
A code P0300 may mean that one or more of the following has happened:

* Faulty spark plugs or wires
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector(s)
* Burned exhaust valve
* Faulty catalytic converter(s)
* Stuck/blocked EGR valve / passages
* Faulty camshaft position sensor
* Defective computer

Possible Solutions

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

what should i do first. sorry if i have alot of question just want it to drive normal.

 

oh and no i dont have a safc

 

Check all ignition components, I find it hard to believe you are misfiring on all cylinders. Yo would prob have no idea if that was the case...

 

what do u mean you find it hard to believe bro.?

 

if its saying all the Cylinder are misfiring then its most like just one thing that causing all of them to do it. do u get me..?? like let say it cant be the spark plugs or wires cuz all four are not going to go out at once. but it would be good to check the distributor and see if that when out or not working right cause that would cause all four to Cylinder to misfire... so u should check for things like that what would cause for all of them to misfire and not waste your time with like check just one injecter but maybe the fuel rail not just a spark plug but distributor and things like that

 

^ agreed, think big... Find a lead to the problem by checking a component that has other components working off of it.

 

okay. so i took all the spark plugs out. and three of them were the same brand and one of them wasnt. so i bought all brand four new ngk iridium spark plug and it still doing the same thing. but i check for spark and all of them seem to be sparking fine. so do u still think i should check the dizzy? or what other suggestion do u got?

 

if all cylinders are misfiring i would bet that your timing is off tooth. all it takes is one tooth to be off to make your car run like ****. heres what to do......

1. jack up front drivers side of car and remove wheel.
2. put car in nutral and turn crank pully counter clockwise untill the little white mark on the pully is lined up with the marker on the timing cover. (its located at the 11 oclock positon around the crank pully on the timing belt cover). you can get a great view by looking down from inside the engine bay. power streering lines may block your view.
3. remove your spark plugs from the valve cover and remove your valve cover.
4. now look at your cams and see if your the marks line up. (exhaust cam mark will be at the 3 0clock position and the intake cam will be at the 9 oclock position.)

if all three marks dont line up, your timing is off. this is not hard to do so dont wait. you dont even need mechanic skills so just try it. it should take even a beginner no more than an hour to do this.

NOTE......YOU CANT TURN A MOTOR CLOCKWISE!!!!!! YOU WILL JUMP MORE TEETH BECAUSE THE TENSIONER LOOSES TENSION.



GOOD LUCK!

 

thanks everyone. i will check it out tomorrow. couple of my friends was telling me the timing could be off. so ill check it out tomorrow. ill let you guys know.

 

okay so i check my timing this morning. and EVERYTHING IS TOP DEAD CENTER! timing is perfect. and everything lines up. im really stuck on this one. any other suggestion or fixing this problem you guys have for me?? please help!

 

anibody!?!?!?

 

$5 says your injector clips are switched!
If your injector clips are switched it will throw a cyllinder missfire check the clip wires make sure the right colors are going to right injector!

 

if they are switched it would cause alll four cylinder to misfire?

 

Switch your Knock and oil pressure sensors. Swapped in a gsr block on my brothers car and it started fine, but the second you touched the gas to go drive it she died. The clips are EXACTLY the same and very easy to cross.
Wuns right too. If the ecu is saying "fuel to cyl 1, but actually sending it to 2," the car will obviously miss from the lack of fuel being their.

 

Let your car idle. give it a little gas and then pull the plugs to see what they look like. Curious about that too.

 

i check the fuel injector clips and they are in the right place. so you telling me to switch these two sensors..? switching the clips only or the sensors.? the clips dont look exactly the same to me. unless u are talking about another place. let me know! thanks alot

 

Anybody!?!?

 

ugh gd it. I can't remember what they are now rofl.
Looking at your engine bay, they're both going to be on the left hand side. And the sensor clips will both be green and female(from the harness)
Also check your map and tps. Can't remember if they're interchangable?? hmm.
Pm if you come up with anything else or have any q's. i'll ask my brother tomorrow if he has any input.

 

Spark plug Gap.

 

Sounds like you're having fuel problems. Check your injectors, fuel filter, and fuel pump. Check for any leaks too. Rough idling might mean that your engine isn't getting sufficient fuel.

 

so i double double check everything. and i found that the clips for the tps sensor and the map sensor was switch around. so i switch it back to how it suppose to be. and its FIX the problem! thanks everyone. but my engine check light is still on. even after i unplug my battery for a day. im going to have to check that.