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Hey y’all. My 02 7.3 auto has always been a dog off the line. Horribly/dangerously slow off the line.
I was researching on here today and found it could be a bad MAP sensor. I made sure the tube was clear. I disconnected the map, and boom, more low end power than I have ever had. Felt like I always thought a 7.3 should (I have always run a PHP to be able to drive safely or tow)
my question is, does this mean the MAP is bad, or is it possibly the BARO sensor is bad? Like does the truck with a unplugged MAP resort to the to the BARO or vice versa?
I have read that the truck with the MAP unplugged goes to a default mode?
just trying to figure this out before I get my AE for Christmas.
Can you read the vales for MAP, BARO and EBP with Forscan? They should all match, withing a 10th, or two, and be appropriate for your altitude. If one is an outlier, look there.
Can you read the vales for MAP, BARO and EBP with Forscan? They should all match, withing a 10th, or two, and be appropriate for your altitude. If one is an outlier, look there.
Mark
I’ll have to wait a month to get my AE, or maybe swing by somebody’s with a scanner
Are you sure you need Auto Enginuity? My understanding is FORScan can do everything AE can for free on a laptop, and just a few dollars on a phone. A how-to thread below will help you get set up if interested. We'd like to save you that AE money if possible.
Are you sure you need Auto Enginuity? My understanding is FORScan can do everything AE can for free on a laptop, and just a few dollars on a phone. A how-to thread below will help you get set up if interested. We'd like to save you that AE money if possible.
What a great set of tests in one document, Sous, thanks for posting. I gotta get brave enough to run some of the WOT tests for sensor checks mentioned in there - probably a more consistent way to check for ICP sensor bias, for instance.
Noted the "Cody Test" is in there, the procedure to check for injector leaks using shop air:
Also that annoying EBPV code we sometimes get, even though the valve is operating correctly - there's a visual check to justify ignoring it. Gotta love it when the manual says to ignore the code and just drive it.
What do they read with the key on, but engine off? Also, are there multiple choices in Forescan for BARO? If so, pick the other one. Oh, and change the units from kPa to PSI, so we can recognize the values without having to convert them.
Lastly, where do you live? Specifically, at what altitude?
ill try to get all the readings on PSI tomorrow. if anyone has free time, im not sure which exact BARO, MAP, and EBPV ones to select in forscan. Also what measurements? voltage and PSI for each?
what all reading do i need just so i can have a list of what t o grab, so my rookieness doesnt drag this thread on.
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