I been told

[Pro fuzz]

So I bought a used work truck (E-450 super duty )born 1-98 so I reprogramed my scan gauge II what should I be watching ICP volts bst eot ?? I know this is the incorrect year forum but in the pre 99 sec told me there trucks don't talk to a scan gauge so I'm trying here thank for any info

[Pro fuzz]

So far I've only 7-8 lbs bst ICP 2450ish wot at idle (oper temp) ICP 475-490 eot 130 bst 0.2 14.5 volts . ECT will only read 40 ?? Any of this normal ??

[Tj Krawler]

Originally Posted by Pro fuzz

So far I've only 7-8 lbs bst ICP 2450ish wot at idle (oper temp) ICP 475-490 eot 130 bst 0.2 14.5 volts . ECT will only read 40 ?? Any of this normal ??

I have mine set to show TPS, EOT, BST, and TFT. Volts is nice to know when the GPs turn off. I wait for the GPs to turn off before I drive.


This is on a van, right?

Boost seems low, stock is usually ~15 PSI. But it could be related to the bigger turbo housing on the van. I'd still look for a boost/up pipe leak. WOT ICP seems a little low, IIRC you should hold 2,600-3,000 PSI. Idle ICP looks good though. Since it's an E99, you have a 15* pump so might be part of it. BST at idle is normal to be a little over/under 0, just fluctuations in the MAP sensor. As the oustide temperature changes you may need to recalibrate it. 14.5 volts at idle is good. ECT is useless on the ScanGauge. The ECT sensor is strictly for the dash gauge. What the ScanGauge shows for ECT is just what the PCM is guessing the ECT to be. It will also read double until some temperature that I don't remember (127*/254*?). Just watch EOT.


EOT only got up to 130*? That's really low. The PCM advances timing in stages depending on EOT, I believe the tuning changes at 145*, 160*, and "normal" tuning is 180*+. When it's under 40* or so, my EOT only gets to 165-170* around town, and ~190* at highway speeds.


If you are watching ICP, that's only half of the HPOP system. You want to get IPR numbers as well.

[Pro fuzz]

Yes this is 98 E 450 box van ! Thanks for all the info I'll check for up pipe leak ,truck seems to struggle keeping speed on x way ?? It's going in for oil change & fuel filters tomorrow