code 32 problem...88 s10 blaze TBI 4.3L

i cant seem to fix this code 32.light always comes on at cruising speed after
10 or 12 miles driving and stays on till its cut off. however this morning i drove all the way to work which is 24 miles straight, no lights ect...and it never came on, this afternoon it did though. ive took the egr valve off several times and it seems to be ok, holds vacuum ect...not sure how to check the solenoid though. ive tried two different ones and same thing. i opened the vale
while engine was idling and it made no difference in idling at all. so then i took a coat hanger and poked in the egr passage way and couldnt find any blockage. tracing the 3 wires that lead to the solenoid for breaks is all i know left to do, the engine runs fine but the ligth is annoying grr... any ideas on what the problem could be anyone?


its an 88 s-10 blazer 4WD with 4 speed aut trans
and 4.3L z engine TBI

A 32 code is related to the BARO sensor, Better known as the MAP sensor. According to www.autozone.com (http://www.autozone.com/) it is located:Under hood, center, upper engine area, below air filter housing, passenger side of throttle body unit, mounted next to valve cover. Code 32 says "voltage low". I would change the MAP sensor About $40.00. this should clear the code.

various sources, including Haynes repair manual, says that code 32 is EGR system, i dunno what the mixup is, but just maybe thats why i cant find a problem in the EGR system, im going to recheck the information and source and will post back, i hope your right cuz i cant find anything wrong in the EGR system short of a wiring or ECM problem. 9i read that code 32 was EGR system on fuel injected models,
code 32 on carb units is baro or map sensor, this is according to haynes manual, hmmmmmm....now im really confused, could you do some more checking and verify this info? this code 32 has plaged me for quiet some time now, as allways thanx for your help chuckster, this manual could be wrong or misprinted, just not sure what to do now....

Codes for CCC and P4 ECM systems were shared. Some systems defined a '32' as an EGR system problem, specifically, an EGR valve with a diagnostic temperature switch or sensor. These systems used the code to indicate a fault with that sensor or circuit. Some other systems defined it as a general EGR system fault due to a falure of the MAP sensor to change sufficiently when the EGR was commanded open. Another definition of the error code is a failure of the EGR solenoid the solenoid circuit. Some early systems defined it as a MAP/vacuum sensor problem.

AFAIK, a 1988 262 V-6 TBI engine should have used that code to define an EGR system fault, either due to an inadequate MAP change or failure of the EGR solenoid valve or its circuit.