I have a 91 chevy s10 2.8l v6, i replaced the plug wires and plugs, it was way over do. While i was replacing them i broke a couple of vacuum lines, there were only three. All three vaccum lines are very brittle. The truck ran ok with out them though so i thought no big deal. A week later on the highway the truck wouldn't get up to power, bogged severly. Now, the engine dies and sounds like a sick b-52 during take off, sometimes a lawnmower when in gear trying to move (loses all power under a load). I just replaced the manual transmission had it proffessionally rebuilt. I used the self flash test and got error code 33 (map sensor high) and error code 34 (map sensor low), I dont have a meter to mesure voltage and dont want to replace it if I don't need to. I already replaced the fuel filter, the spark plugs and wires, rotar cap and distributor cap. I also recieved error code 21 (idle switch circut open or WOT switch circut shorted) and 22 (fuel cut solenoid circuit open or grounded.
2007-02-14 16:49:24 · 4 answers · asked by no idea 1 in Cars & Transportation ➔ Maintenance & Repairs
Easy. Start the engine and let it get to operating temperature. Next, get a can of starter fluid (ether), and gently spray it at the vacuum hose. If you have a leak, it will suck the ether in, and you'll hear the engine rev just a little bit. If it stays the same, it's probably something else.
2007-02-14 17:59:00 · answer #1 · answered by Me 6 · 1⤊ 0⤋
You need to replace the broken vaccum lines first so the engine won't run so lean, ( too much air getting in). These broken lines might be going to those sensors and they can't get a proper vaccum reading if they aren't hooked up. These sensors are designed to put a code in the computer if they are bad or not hooked up in some cases.
2007-02-14 17:06:44 · answer #2 · answered by Timer2 3 · 0⤊ 0⤋
do u have a engine check light on. clear codes, drive, find out what code is set replace all vacum lines, relace sensors, clear codes,drive.
2007-02-14 16:59:09 · answer #3 · answered by b b 1 · 0⤊ 0⤋
replace your vacuum line,s........you said they were all brittle & broken............after you do.......erase your code,s........then drive.....see if it make,s a difference.........wide open throttle switch.......could be affected by vacuum leak,s........if your idle surge,s ......replace your map sensor.......then recheck for trouble code,s.
2007-02-14 17:39:31 · answer #4 · answered by slipstream 7 · 0⤊ 0⤋