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Any certified mechanics in the house?

RosieRosie Member Posts: 14,525 ✭✭✭
edited July 2002 in General Discussion
Have a problem with a Pontiac 3.1 the local mechanics can't solve.
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Comments

  • .280 freak.280 freak Member Posts: 1,942 ✭✭✭✭✭
    edited November -1
    Well, hey, Rosie, post what yer problem is. Maybe somebody here has had a similar problem and was able to get it solved, ya never know.

    Of course, you WILL get some smarta** answers, too, but you already know that!
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  • RugerNinerRugerNiner Member Posts: 12,636 ✭✭✭
    edited November -1
    I'm Certifiable...........Oh, Wait you said Mechanics..........Sorry.

    Remember...Terrorist are attacking Civilians; Not the Government. Protect Yourself!
    Keep your Powder dry and your Musket well oiled.
    NRA Lifetime Benefactor Member.
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  • .280 freak.280 freak Member Posts: 1,942 ✭✭✭✭✭
    edited November -1
    See what I mean?
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  • bartobarto Member Posts: 4,734 ✭✭
    edited November -1
    HAVING a pontiac with a 3.1 is a problem.
    thats a joke, son!
    barto

    the hard stuff we do right away - the impossible takes a little longer
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  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    Belongs to my daughter and she loves it so I can't get rid of it. It's an old 91 Grand Prix. Engine has set no codes and the fuel pressure is 40 psi. When I start it it runs fine but when I start down the road I may get 5 miles or I may get 50 feet and it will die. I can start it right back up but it will barely idle it runs so rough and if I just touch the gas pedal it will die. It will do this until I get tired of it and have my wife come and pull me home. Wait a few hours or the next day and I can start the whole process over again. My mechanic has had his test equiptment on it while I drive and it shows nothing. Man made it so man can fix it. It's just a matter of finding the right man!
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  • 22WRF22WRF Member Posts: 3,385
    edited November -1
    The next time it does the dying trick.
    Get out step off 25 yards.
    Take one AR-15 put 3 clips thru the engine compartment.

    I Refuse to be a VictimGrumpy old man

    Life, Liberty, and Pursuit of All Those that Threaten it
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  • LowriderLowrider Member Posts: 6,587
    edited November -1
    I had a company truck, a Chevy S-10, that behaved very similar to what you're describing. The dealership replaced things one at a time on it and everytime they would call to say it was fixed, I'd go to pick it up only to find them towing it back from the latest test drive. They finally ended up replacing the engine control module (computer, black box, brain...whatever you want to call it) and that cured the problem. The damn things are made today so a regular man doesn't have a chance of fixing it himself.

    Your problem also sounds like how a car used to behave when it had a bad coil. Run OK until the coil built up heat and developed internal resistance, then it would shut down. You might look that direction.

    Lord Lowrider the LoquaciousMember:Secret Select Society of Suave Stylish Smoking Jackets She was only a fisherman's daughter,But when she saw my rod she reeled.
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  • offerorofferor Member Posts: 8,625 ✭✭
    edited November -1
    When I bought my Pontiac Grand Prix I revved the engine in neutral and the salesman about had a heart attack -- "DON'T DO THAT!" he yelled. It seems Pontiacs now have a sort of governor to keep the engine from being overdriven out of gear, and if that burns out, oh boy.... But I would think your computer would have found it, although I've got an overheating problem right now that the computer did not detect. Just had it in the shop, checked out fine, but the temp goes into the red anyhow. I'm going to check the fluids next and see if the darn computer knows what it's talking about.

    - Life NRA Member
    "If cowardly & dishonorable men shoot unarmed men with army guns, the evil must be prevented by the penitentiary...and not by general deprivation of constitutional privilege." - Arkansas Supreme Court, 1878
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  • dads-freeholddads-freehold Member Posts: 1,361 ✭✭✭✭✭
    edited November -1
    greetings, i believe lowriders right it's the brain,the hardest part to replace on gm's cause they hide em so well. had the same problem with a sonma. replaced with a bearly used part and no more problems. respt. submitted dads-freehold.

    rodney colson
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  • BT99BT99 Member Posts: 1,043 ✭
    edited November -1
    Sounds like your "running out of gas" I think fuel presure should be
    about 60 pounds after going through the regulator to the injectors.
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  • cowdoccowdoc Member Posts: 5,847 ✭✭✭
    edited November -1
    i went to school for diesel mechanics, i dont like gassers :-)....did you replace to fuel filter? i dont know where it is on the car, but underneath the body somewhere probabaly near the fuel tank.
    doc

    I dont give my guns without somebody getting hurt!
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  • BT99BT99 Member Posts: 1,043 ✭
    edited November -1
    I gave you some bum information. 40 pounds fuel pressure is fine.
    Have your mechanic replace the Torque COnverter Solenoid. If this is
    bad it will not allow the torque converter to unlock and keep it in direct drive all the time. Sort of like slowing down with a standard transmission in high gear and not pusing in the clutch. Fuel pressure
    is OK and if it were ignition it would have to cool down about 20
    minutes to allow restart.
    try the torque converter solenoid.
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  • will270winwill270win Member Posts: 4,845
    edited November -1
    I'm with LTS on this one, Sounds like he has it nailed. The Torque converter clutch solenoid was mention but usually is only a problem at normal operating temperatures. Either way, I would still seek something a little newer as GM's early 90's sequentially injected models tend to be picky and on the verge on pain in the *. Especially, that damn Pontiac 3.1! Check that the o-ring (or gasket, I can't remember), is not broken or missing from the IAC.


    ~Secret Select Society Of Suave Stylish Smoking Jackets~
    Will270win@nraonline.com
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  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    IAC was replaced and both re-learning procedures gone through at the beginning of trouble. I know the injectors won't set a code on this engine so thats next. I think they have to read 12 ohms or higher. If that don't cure the problem then I will replace the computer. BTW the computer for this car is under the coolant tank. Thanks guys. If I end up shooting it I will show pictures!
    Rosie the befuzziled one
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  • Warpig883Warpig883 Member Posts: 6,459
    edited November -1
    Crankshaft posistion sensor intermitent problem is very possible and has happened before.
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  • john wjohn w Member Posts: 4,104
    edited November -1
    Park it out of town and report it stolen.-You can spend a lot of money and not find the problem.Get a good manual and pour over it.
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  • jltrentjltrent Member Posts: 9,345 ✭✭✭✭
    edited November -1
    It sounds to me like it could be the fuel pump. I have had a ford truck and two Honda cars that run poorly and after replacing the fuel pump it was fixed. On each one of these I done the repair myself and was able to find salvage pumps, but if I had bought new pumps and had them installed it would have run at least $300.00.
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  • oldgunneroldgunner Member Posts: 2,466 ✭✭✭✭✭
    edited November -1
    Looks like you're getting a good list of possibilities, but I haven't seen this one mentioned. Water in the fuel tank.

    There are no bad guns, only bad people.
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  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    Got off my fat lazy butt this afternoon and tore into the engine. Injecters should read 12 ohms or higher. I got 12.1--12.5--12.3--12.3--9.1 and 3.6! 9.1 and 3.6 is-- (I think) the problem. Now if I could find free injecters I would have it made!! Actually they are only $52.00 each at advance. Thanks guys
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  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    I like you Liktoshoot but I sure hope you are wrong on this one! No matter though because it WILL be fixed come H or high water. One my daughter says she would rather have it than a new one and two it is a challenge. I sure do like a challenge. To me a problem is just that, a problem to be solved. If I'm not smart enough to figure it out there is always someone who is!
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  • RosieRosie Member Posts: 14,525 ✭✭✭
    edited November -1
    Dang it LTS I didn't print all that info and you go and delete it! Whatsa matter with you, Anyhow? I may need all the help I can get before it's over! Who peed you off? Not me I hope.
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  • .280 freak.280 freak Member Posts: 1,942 ✭✭✭✭✭
    edited November -1
    Rosie -

    I left a message for LTS where I know he will see it. Hopefully he'll get back in contact with you here.
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  • ogoatogoat Member Posts: 15 ✭✭
    edited November -1
    offeror-your overheating problem could be a bad radiator cap , or to much bug build up around the the radiator , pull the radiator and wash with a water hose the inside where the radiator goes and the cooling fins on the radiator .
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  • whiteclouderwhiteclouder Member Posts: 10,574 ✭✭✭
    edited November -1
    rosie:

    I asked hump about it, he teachs Automotive Repair at the local college.

    The 3.1 is simply a bored 2800, one of the best engines GM ever produced. There are millions of them running around just fine. I couldn't remember what all the symptoms were but from what I told him he says the fuel pump would be where he would start.

    Don't dispair, it's a good engine.

    Maybe you could threaten to sit on it.

    Clouder..
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  • offerorofferor Member Posts: 8,625 ✭✭
    edited November -1
    ogoat --
    Thanks. I'll look into it.

    - Life NRA Member
    "If cowardly & dishonorable men shoot unarmed men with army guns, the evil must be prevented by the penitentiary...and not by general deprivation of constitutional privilege." - Arkansas Supreme Court, 1878
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  • rscoleman88rscoleman88 Member Posts: 4,250
    edited November -1
    EGR valve or air flow problems? That has caused the same symptoms on some our vehicles

    Respect those who protect us now just as you would those who died for us in the past.
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