This morning started truck, sat for a few min at idol as I loaded truck, happen to be sitting in driver seat waiting for copilot & throttle had a quick surge- ultragage went to err on temp. & I caught a glimpse of red service engine light flash.

Rolles our of garage, one block down rd & truck goes into limp mode - M&S flashing. Shut truck off & restart - no problem. Drove 100 miles .

I assume, perhaps a CPS sign of failure & red SES light was a misfire hiccup & it straightened itself out and at running temp, no issues.

The thing is, this would be 3rd CPS sensor in less then 2 years. This is an 04, 196k on truck/ however 120k on motor. Any thoughts on the what I can look into? No codes pending or stores

 

CPS = usually won't fire back up until it cools down. With the M & S flashing aka limp home mode I would give the battery terminals a good cleaning and make sure they're on nice and tight. You'll get very odd behavior out of a LR when it's not getting the proper AMP/Voltages.

 

I will double check, but I have good solid clean battery connections & a new battery.

I’ve had the truck suddenly accelerate on its own (for about 1- 2 seconds) once before, at a red light - then flash into limp mode back when I first acquired it. Conditions were just after getting caught in a passing thunderstorm in late summer. I had had a code that time indicating Crank shaft position sensor.

Again recently this past December, while driving down main st in a Vermont town- the truck suddenly died completely mid stride. Shut right off. I coasted into a closed parking lot - which just happened to be next to an auto parts. I spent the night in a hotel & swapped CPS early next morning when cool - and drove home no problem.

So my question would be:
Would low voltage cause a throttle surge?

How frequently are D2 owners changing CPS - or could I expected shelf life of an autocraft brand sensor to be that poor?

Does this even sound like CPS is the steady culprit ?

 

I only recommend the Bosch brand CPS. The knock off units don’t seem to last at all.

 

Best is right, I tried a non-Bosch and it started causing problems at 6 months.

You did not get any codes when M&S were Flashing?

I had M&S caused by the CPS, and that was reflected in error codes.

 

Aren't Bosch CKPS often found in AutoZone Duralast boxes?

 

Yes that’s where I always get mine. I demand to look at the part before I buy it & 99.9% of the time it’s a Bosch sensor. One time I was in a hurry & didn’t look and that was the one time it was a no name wonder. Installed it & I maybe got 6 months out of it before it acted up on my Anniversary dinner 2hr from the house!! It finally did start, and we got home without any issues. I quickly removed it, took it by Auto Zone & replaced it for another unit & this time I made sure it was a Bosch unit.

 

Bosch. I agee, Got it.

Does throttle surge sound congruent with CPS hiccup in anyone’s experience?

 

No codes present.

 

Throttle Surging doesn't sound like CPS. That seems more likes Throttle position sensor, but I am no expert.