alright it all started one fine evening when i found a very mint 93 s10 for $300 dollars (very good friends with a towing company) that the previous owner decided they didnt want anymore. turns out the tranny was toast. oh well, parked beside this truck is an 85 iroc with a good 700r4 and a tpi305. this light in my head goes off and i think hey thats a good idea. im now refering to said light as the idiot light.

so after a few weeks of work i have a 305 tpi powered 93 s10. but it wont run. it starts then dies instantly after a few days of frustration and pulling the wiring harness out 3 times and going through every inch of it looking for shorts or problems putting it back in to no avail. i sit down in the passenger seat of the truck about to give up, look down and i discover that, like the idiot i am, i accidentally mixed up the connectors for the mas and ignition power, not once, not twice but three times. alright sorry for the novel but this is my second post here and i just wanted to establish where i am.

now its been all together for 2 days now and ive been noticing some minor drivability issues. a)the truck seems to stumble or lack power higher in the rev range (around 3500rpm) also it seems to lack crisp throttle response.
b) occasionally it will start to miss and hesitate as the check engine light comes on, then it will stop and drive normally (except for problem a), then start again. while doing this it backfires through the intake. so any ideas?

i get code 33 and 34 which indicate a bad MAF but ive heard rumors that this could also be a MAS issue (stupid 85's only i could pick the worst possible year) the code 24 is curious as i was under the impression 85's didnt use a vss system but instead had a mechanical speedo. now another concern is that when i am checking codes. pin a-b on the adld i can hear my ISC going crazy i was wondering if this is normal? any help appreciated. again sorry for the novel

 

ok just discovered i do need a vss system, i am ordering one from jtr immediately, however i do not see it solving my misfiring issues.

 

so is there any possibility of making the 2000 pulse per mile signal processor from stealth conversions interact with the 40 pulse per driveshaft revolution drac system off the 89-94 s-10 in order to have a functioning speedometer? im seeing a slight possibility but i cant seem to find decent wiring diagrams for the s-10's drac system.

 

now it wont even ****ing idle, stupid *** tpi's

 

yes, because it's the tpi's fault that you put it in a s10 without doing the proper research.

 

ok dude calm down its gonna be ok *hug*.

now that that has passed, your code 33 is probably not the MAF itself but the relay. see, in like 89 they changed the relay circuit so it would not break down or need upgrading. you should go to the dealership and ask them for the new relay or info about it and get some part numbers and then go to your regular parts dealers and see if they can get you one. dont go to a junkyard because they havent been installed with the upgraded version. and the reason i say its the relay is because its way cheaper than the MAF, or at least up here in canada MAF sensors are like 700CAD (600USD) where the sensor is under 50.

also, im currious if you hooked up the EGR valve and solenoid and have proper vacuum. EGR valves are the most important things in those V8s because they allow your car to stay at advanced timing at high RPM without "knocking".

i dont know anything about VSS because i keep my camaro engines in camaros.

 

lol thats the stupidest thing ive ever heard. mainly because as i wrote in the first post the truck ran great, then started running poorly. it is not my fault that general motors couldnt engineer their way out of a cardboard box provided at least one end was taped shut. it turned out the problem with the truck was indeed the maf burnoff relay (not sure if i said it was an 85 tpi) and as that is an 800 dollar part i switched it over to speed density, problem solved truck runs great now, although i am unimpressed with the power. my fault for buying a tired old 305 tpi. lt1 and t56 is in the works now

 

GM engineers lots of things quite well.

There is a reason the 85 TPI setup is a one year wonder, even they knew that lol

Good to see u fixed it a much smarter way than paying $800.

later
Jeremy

 

you sir need to sell your camaro tomoro and buy a ford, im telling GM on u