[BLAZERBOY69]

Originally Posted by bigbutr

I've posted on some other threads, but I decided to start a new one in the hopes others can offer some guidance.
Basically, I work for the USPS doing an 82-mile rural route in my 1996 S-10 with the 4.3 V6 and auto tranny. This past Thursday while trying to service some boxes out in the woods, I had the misfortune of running through some water in a deep rut which sucked water into the engine and soaked the rest of the engine compartment with muddy water. Luckily, I avoided major engine damage since I realized what had happened after it stalled out and didn't keep turning it over. I had it towed back, then proceeded to try and drain the engine. After the plugs were pulled, engine drained, plugs and wires replaced and oil drained and replaced, the engine started right up and ran smooth.
The next day on my way to work, the tranny started acting weird, though only when I got up to cruising speed (45). It shifted in and out of gear and idled rough at a stop.
Took it to an AAMCO shop (I know, big mistake after all I've read now) and they came back with six trouble codes - none of which seem to have anything to do with the tranny's hard shifting in first and other maladies.
They are:
P0103 - Mass Air Flow Sensor Circuit High Frequency
P0121 - Throttle Position Sensor A Circuit Range/Performance
P0122 - Throttle Position Sensor Circuit Low Voltage
P1106 - Map Sensor CKT Intermittant High
P1122 - Throttle Position (TP) sensor circuit intermittent low voltage
P1509 - Idle Air Control (IAC) system high RPM

I don't know what AAMCO did for the $42 diagnostic fee I was charged other than pull those codes because their bill says "After a complete external service, no transmission problem was found at this time"
Luckily I have another vehicle I can use on my route, though my 96 Beretta is not quite as roomy up front or comfortable as my truck, so I'm not in a panic rush to get this fixed. I'm just at a loss to have so many sensor failures at once. Is it possible one thing is causing all of this or am I really looking at replacing each and every one?
Any thoughts or opinions at this point are greatly appreciated.
Steve
Panama City

IT IS POSSIBLE THAT ONE THING IS CAUSING ALL YOUR SENSOR TO GO BONKERS:WATER. SOME WATER MIGHT HAVE GOTTEN INTO THE WIRING AND NOW YOUR SENSORS ARE SCREWY.