ok guys ive posted on here tons of times about my problem. 97 Z24 5 spd . one day out of nowhere my cel came one and my car started doggin. took it to AZ and im pullin 1071 bank 1 too lean. and a 14?? dont remember now. but dealt with the fuel system. no matter how i drive my car. beat the piss out of it or drive lieka g ma i get 28.mpg i uesd to get like 18-19 when i romped on it. ?? ive changed TPS. IAT, O2, put a 02 simulator on for the 2nd 02 sensor. MAP sensor. fuel pump , fuel filter. injectors. fpr. car at the time had a intake and a muffler. approximatly at the same time my cooling fan quit working but would work if i disconnected my tps WIERD ?? i think so . i wrecked my car bout a year ago and finally getting it all together. had the whole front end off. did a complete engine /wiring harness check and replacement in some parts. ( healdight area) car still does this . i didnt believe before about a cel going into safe mode but now i deff do. also when the car hasnt been ran all night long when i go out in the morning to start it up it starts and tries to die out i have to rev it to keep it goin for a bout 25-30 seconds. not redline revving but just lik rev get it over liek 2 k. then it seems to run o.k but it has not nearly the amount of balls as before. (before problem 14.7 1/4 mile) after prob occurred 15.4 best time i can pull. it jus sucks for balls . im leading towards my computer is shot. but not positive. i have a computer out of a 97 auto. and i was wondering if i can get it to relarn to my car. if anyone has any info . please help me out.
PJ
So you threw new parts at it hoping to fix the problem? Every DTC has a flow chart to follow to find out exactly what to test and what, if anything to replace. By not finding out exactly what was wrong, you may have multiplied the problem by trying to fix it first. Find out what code it is, then find the flowchart. If you can't find it online somewhere, buy a service manual (not the Haynes/Chiltons crap, but a real, honest to goodness factory service manual) and find it in there.
the code read Bank 1 too lean not enough fuel to suffice system. so i started at the fuel system.02 sensor still did it . pump, filter. still code. and prob still. then injectors. cleared codes still problem. changed sensors. still problem so i did look to see what was wrong with the car. hell i took it to the dealership and the tech took it on the rack and put it to his diagnostics and told me he wasnt sure. he said my short trim fuel level was going haywire. but with my 02 sensor simulator he couldnt check nething else due to the simulator telling the computer 100% when the rest of the system was approx 62 %. havent had time or money to put a 2nd o2 sensor back on now i have to buy one cuz lord knows where mine went. and a 75 a hr i really dont got that kind of cash at hand.
PJ
Well the second O2 sensor is really only there to see if the cat is working. Even if he could read the sensor he would not get nothing from it. You need to test fuel pressure (which is hard on our cars.
FU Tuning
i have a adjustible fuel pressugre gauge now and i tapped my rail at the far end right before the return line. it runs constant to what i set the fpr to . as of now its set at 50 and i cna rev it drive it hard . it keeps 50 psi . might go down to 48 if im really rhomping on it . but it seems to be getting good fuel pressure
PJ
Kikinz24 wrote:i have a adjustible fuel pressugre gauge now and i tapped my rail at the far end right before the return line. it runs constant to what i set the fpr to . as of now its set at 50 and i cna rev it drive it hard . it keeps 50 psi . might go down to 48 if im really rhomping on it . but it seems to be getting good fuel pressure
If you are getting a lean code why would you lower the fuel pressure more?
How are you adjusting the fuel pressure? Meaning is the vacum hose on the FPR when you adjust it? I believe a stock LD9 should be at 54psi at WOT. Why don't you try raising the fuel pressure.
FU Tuning
