Join Date: Apr 2011
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanked 0 Times in 0 Posts
one long 91 caprice nightmare.
Alright, i have a 1991 Caprice 9c1 with the 350 I bought last year in July. When i first got it, it would lunge forward or backward when i put into drive or reverse and it had a high idle at 2000 rpm, but other than that it ran like a dream until one morning in september i drove it home from work.
It started up just fine but i noticed it had a lack of power when i would accelerate, but i made it home with no problem. Later that day i went out to start it and it started right up, but died immediately. I had to keep pumping the gas pedal to keep it alive until it seemed the engine warmed up, but then when i put it in gear it would stall, when i finally got it in gear it had no power, i would have the pedal to the floor and it wouldn't move i had to pump the pedal again and then it'd just putt around the parking lot and back fire.
So after that i did some research. I replaced: EGR valve, IAC valve, coolant temp sensor, TPS sensor, MAP sensor, PCV valve, Ignition coil, oil pressure switch, fuel filter, T-stat, cap and rotor, plugs, plug wires. I also cleaned the TBI, fuel injectors, and replaced all gaskets on fuel pressure regulator and Changed intake manifold gasket twice
Still nothing. I took it to Firestone to retrieve the codes, i asked the guy if they had the obd1 tool to get them and he said yes. I left it there and went to work, a couple hours later the dumbass calls me and says they dont got it, and tells me hes gonna take out the distributer to look at it and i tell him no i'll just pick it up. When i get there he has it out and i'm just like wtf put it back. when i get it home i look at it and he didnt tighten the distributer clamp, so now my timing's f'd up too and i don't know where it was before.
I ended up replacing the fuel pump in febuary and that fixed my no power problem, but still lacks power. It's also very hard to start: i have to start engine then pump the gas for about ten minutes and then it will idle erratically for a couple more before it's steady at a high 2000 rpms and then when start driving it'll hesitate until the engine is hot, if i dont drive it for a couple hours i have to do it all over again. if it's in park no hesitation. sometimes it will die right after i drive when i put the gear in park.
I checked codes with a paper clip: i got code 15- coolant sensor circuit, i've changed three times still has the code; code 44- lean exhaust i dont know what that means or what it causes but i changed the O2 sensor and i still have the code; awhile ago i had a code 54- Fuel pump relay low voltage, but it's not there anymore dont know what caused it to show up or go away. Also my alternator light is on and sometimes the blinkers wont work.
i'm suspecting the voltage regulator because my lights will dim and the battery gauge will fluctuate when my blinkers come onand the car starts up like new after the battery has been charged(but still idles at 2000); or the ignition module.
I really really want some help, i'm cluless and so is everyone i've talked to.