ok heres the problem.... everyones in a while when im driving and if i want to go wot in first gear it seems like it goes for about 2000 rpms and stops like something is getting stuck in the tbi unit.. and it gets fuel again and runs fine... im not sure whats causeing this problem... i tryed searching and couldnt find any answers.. maybe some of you guys have had this problem in the past.. thanks
Martin

 

ttt... anyone? come on i know theres someone out there with a possible answer..
Martin

 

When's the last time you changed your fuel filter?

 

less then 1k miles...
MArtin

 

is your clutch going out? Tune up? bad fuel? sorry for stupid ?'s,been a long day.

 

clutch seems pretty good. just had a tune up about 1k miles agao... and from what i know fuel seems to be getting to engine but i never know..

 

ok today i was driving and i was about to go wot at first gear and it did the same thing stumbled for a second and got the check engine light... code 43... so i pulled over and turned of the car and started it back again and ran like it does with power and throttle respond... what causes this.. any help..

 

Try replacing the Knock Sensor.

 

Weak or overheating fuel pump? Can you test your idle vs WOT pressure? Just a thought.

 

What is happening is the ECM is doing a forced knock test. The ECM will run this test once the engine is up to temperature and the driver mashes the go-pedal. To force knock the ECM adds a lot of timing.

If no knock is seen the first time, the ECM will try it again with even more timing. If this test also fails then the ECM sets code 43 and pulls a bunch of timing out. This timing stays out until the ECM gets a key-off/key-on cycle.

So, in order to fix this issue you need to figure out why the ECM can't get the engine to knock. Or, if the engine does knock, why the ECM is not alerted to that fact.

In your case it sounds like (no pun intended) the engine doesn't knock. If this is the case, and you aren't hearing the engine knocking, then there is a reason for it.

Some items that will cause the engine to not knock: too high octane fuel, too cold intake, timing not set properly, too rich.

The idea is to get the engine to knock during the forced knock test. And the code 43 and loss of power will go away. The engine will have more power as during WOT the proper amount of SA will be added. This is not done until the forced knock test passes.

RBob.

 

Thanks Rbob.. ill have to check this... every once in a while ill get it when its cold... it just bugs me because when i want to gas the pedal it does it.. but i only got code 43 once... ill have to do another logg... and ill keep you posted.. thanks again for the help guys...
Martin

 

i know one thing i have a exhaust leak on the driver side that i can hear.. not sure if this can cause the problem..