Engine/Transmission (1998.5 - 2002) Check Engine Light

[nuv22]

Check Engine Light-Boost Sensor

this morning i got in the truck turned it on and hit the gas to show my friend my exhaust and all of the sudden i got a check engine light??? i was like ???? so i ran the scan tool on it and received codes 216( injection timing control system malfunction, fuel injection pump timing failure. )and 238(turbocharger boost sensor a high, MAP sensor voltage too high). now i have NEVER had a check engine light come on until i went and tried to show off this morning. it was about 58-60 degrees outside and i have nothing done to my truck except for whats on my signature. i also have 12 psi at idle and 9 at WOT. so i cleared the codes and drove all day today and nothing. should i be worried about anything?

 

[nuv22]

any ideas ?

 

[DMcPherson]

wait and see if you have any other problems or if you see a check engine light again.

 

[nuv22]

Sounds good thanks for the reply.

 

[nuv22]

Again!

well today it came back on right after i started the truck. (no showing off this time) so i scanned it again and got P0234(Engine Overboost condition)

P0236(boost sensor A circuit, range or performance problem-map sensor voltage high for too long)

P0238(Boost sensor A circuit, high map sensor voltage too high)

so let me guess is the sensor going bad? is it the MAP sensor or is there 2 separate sensors that monitor boost? also anyone know the cost and location of the MAP sensor?



is it possible that maybe while driving down the road this could of happened and the light comes on after you restart the truck? i would think that if it sensed overboost the light would come on while driving?



Thanks

 

[nuv22]

driving to work this morning BAM 234,236 and good ol 238 so i am pretty sure its the sensor. well i picked up a boost sensor today from a friend at the dealer for 80 $ i guess they run about $100 new. so i will be changing it out tomorrow has anyone here done this before? is it easier to go from the bottom or the top? i got a 1¼ socket to fit on the sensor, just wondering if its better from up high or down below. while i had the sensor in my hand looking at it i remember all the questions about people trying to figure out a way to fool the boost sensor from an over boost (when they want more power) so wouldn't it be easy just to put a regulator between the sensor and the head so you can only show boost to your desired level? just a thought i am sure some one has already done that.