2004 Dodge Intrepid 2.7L
Hello everyone, This vehicle only runs lean when the vehicle gets warm, and the hotter it gets, the higher the fuel trims go. For example just at idle bank one is at +15 as I rev higher it stays between 15 to 20. On bank two at idle is +21 and as I rev up it goes +22, +16,+10,+10,+33. In drive the load is 4.7, MAP is 48, RPM is 688, IAT is 168, Engine Vacuum is 15.75, in Neutral Or Park is goes to 20 (HG). The reason why the check engine light is not on is because I put in a new battery and when I drive it to complete the drive cycle the check engine light comes on. please let me know what you guys/gals think about this vehicle
When you you say you rev it up is that just sitting there or driving it under Load .
Can you offer fuel trims under the following running conditions: -idle/no-load -2500/no-load -brake-torque @1500rpm
What is fuel pressure? Also, fuel trim is determined completely by oxygen sensor feedback. I've used Denso sensors and had problems with lean codes. Had to use Mopar.
since this runs lean ( I assume the trims are going more positive) when it warms up, what changes between the cold engine and hot engine? Is the change MAP, fuel pressure, or O2 sensor feedback? Since this is a speed density engine, the trims rely heavily on the MAP and a poor running engine will not produce the proper MAP. Keep in mind, this is a 2.7, and they are synonymous with poor…
Fuel trims at 2500 rpm are Bank 2 +30 and bank 1 +20 Fuel trims at cruse are both between 5 and 10
Danny, please read my above suggestions and get back to us, thanks
At idle no load stft 1 +16 ltft 1 + 32 At idle no load bank 2 stft +13 ltft2 +32 At 2500 no load stft 1 is above and below + 5 and -5 Ltft +24 At 2500 rpm no load bank 2 stft + and - 5 Ltft bank 2 +18 Map idle no load 9.3 inHg Map no load 2500 rpm 7.3inHg Map at idle in drive 13.2 inHg No load @ idle 02s1-1 max .745 min .705 02s1-2 max .725 min .665 02s2-1 max .760 min .665 02s2-2 max .820…
Power braking is a bad idea it overheated the car
So, judging by theData you have provided to us, it appears that the PCM is over fueling at idle. This is reflected in your five gas trace as well as your O2 sensors. However, PCM is adding heavy positive fuel trim. This is strange . What Is your commanded injector pulse width at idle along with what the PCM interprets as system voltage?
That is a start, now, how are those trims relating to o2 voltages, engine speed and map? How do the trims trend when the throttle is moved? Only a scan tool graph picture will answer those questions, and those questions are crucial to getting this vehicle to tell you what is wrong with it.