irondukeman· square body man
Discussion Starter · #1 ·
not to brag, just here to help... any questions or unsolved mysteries? i can just about answer anything about these little engines- i love them, i have owned 23 lol -
Ill let you know if I need you shortly. I was having a few problems. Also, my work just got a modis scanner from snap-on, Im learning how to use it on my truck. I was having rough idle when cold, then high idle when warm. also, my timing would jump around while trying to time (10-20 degrees in either direction) I replaced the map because even with the vacuum line unhooked, i was still getting jumpy readings. That straightened up my timing problem. But today it acted up again, and I got a check engine light for low circuit or short in coolant temp circuit. So I hooked up the modis and low and behold i got 300* C in the motor (whats that like 600*F?) I just replaced the coolant temp sender in the front of the motor with a brand new GM one, so I know thats good. I actually cut the 2 wires going to the ECM and it still read 300*C. So i ran the service numbers on the ECM, low and behold its for a freekin trans am with a TPI 305. The idiot that worked on it before me replaced every single electrical part on the truck except for the bad one, sometimes replacing them with the wrong one (coolant temp sender and ECM) So Hopefully the junkyard is open tomorrow. HERES ONE FOR YA RIGHT NOW!!!! Can I use any ECM with a 2.5 manual for this truck? I was picking through a Fiero with a 2.5 in it. For the 1st time in 5 years the closest j-yard to me had no s-10s or blazers! Also, considering I dont know the proper ecm service code for this truck.
the green wire is the tempature cooling sending unit wire, or should be- which end are you looking at, at the computer end or the engine bay? i could be wrong, lemme read my manual and i will get back to you a little later, but it should be the temp gauge sensor wirei cannot find the where to hook up the green wire. i cant find the symbol on coil either. i diagram would help very much. i have looked at the other posts but am still having problems
what exaclty is that and what is the question?I got a puzzle for you...Figure out the answer to the forum guveaway and send me the answer =PP
plain black is ground and with the stipe should be positive, pretty sure about that, but ill check for sureim looking at engine bay. the plug that sends the wires to the distributor. negative one right?? there are two wires. im hooked into one of them. there is a plain black and a black one with a purple stripe.
ok, i checked and was right, what are you attempting to do?plain black is ground and with the stipe should be positive, pretty sure about that, but ill check for sure
the 2.5s are dependable, noisy little work horses, not hot rods. the will last a while if taken care of, which means some work, not as much as other models but they do need their share. every thing is fairly simple to work on, very basic if i may say, and repairs cost minimun, not many parts to change.just registered. iam looking to buy my first truck, and just waiting for a good s10 to come up on craigslist, i want one that has a good engine and thats about it, so i am coming to you for advice to tell me how these engines are, are they bullet proof or if not cared about break down easily. because its been a headache finding one with low kilometres/miles. and iam just wondering if a s10 with high miles have problem after problem.
i know if any engine is cared about they want last very long but generally how durable are these engines.
i know its odd, but have you checked your air filter or your injector?2.5l suck for power, if you just want good gas mileage from a 1st gen and dont care about speed power, or exhaust, go for it, otherwise get a 4.3l
on a sidenote, i just checked my fuel mileage, 14mpg CITY, driving like a grandma, not bogging the engine down or anything.
im hoping its just the weather, because i know theres a diffrence when driving the truck 5 blocks when its 10F out compared to 60F, but getting 14mpg city is worse than most v8!
so plugging in my old coolant temp sensor into the water neck, did nothing.