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Previous Thread Next Thread Print Thread Rate Thread Acceleration hiccup - trooper been sitting for a while *Fixed* #808044 04/25/07 08:54 PM Joined: Sep 2002 Posts: 239 BC, Canada Nick Muzzio OP Wheeler Hello all, been a while. I am resurrecting my trooper for a trip across the states. She's running OK after sitting for a while starts up fine, idles fine, but when I go to accelerate for the first time (like after I take my foot off the pedal, then press again) it gives me like a hiccup then goes. If I press the pedal down very slowly it seems to rev up fine. Just curious if anyone has any quick idea I can check out before my trip. Thanks. 1991 Trooper 3.4L engine, 4.3L throttle, Standard Tranny. Last edited by Nick Muzzio; 04/26/07 01:52 AM. 91 Trooper LS, 5 Speed Manual 3.4L Engine w/4.3L Throttle Body Snorkel, 31" Pro Comp MT Tires, 2"lift, ProComp ES9000 shocks and steering stabilizer http://members.cardomain.com/sun_thief Re: Acceleration hiccup - trooper been sitting for a while [Re: Nick Muzzio] #808045 04/25/07 09:19 PM Joined: Jan 2005 Posts: 899 Florida F Fujisawa_Rob Rock Warrior Does it feel like it's going to run out of gas? Could be a sticky EGR...might not set a code. Try working the EGR valve around with your finger. Does it only do it on the first acceleration, or intermittently? 2000 Mitsubishi Montero Endeavor, "Katsumi", 138k 1993 Toyota Tercel, backup vehicle, 93k 1989 Isuzu Trooper, "Beniko", R.I.P. at 233k My 'Genuine Isuzu Parts' decals - for sale Re: Acceleration hiccup - trooper been sitting for a while [Re: Fujisawa_Rob] #808046 04/25/07 11:08 PM Joined: Mar 2007 Posts: 114 S Shovel Wheeler remove, clean, lubricate, and reinstall IAC motor... go through the reset procedure (do a search on the forum) A slow IAC will cause a stutter. check smoothness (impedance) of TPS sweep. calibrate using the oblong mount holes for 0.5v at closed throttle. A dead spot will cause a stutter. inspect injector spray pattern. a dripping injector will cause a pool, which will cause a stutter HTH Re: Acceleration hiccup - trooper been sitting for a while [Re: Shovel] #808047 04/26/07 01:50 AM Joined: Sep 2002 Posts: 239 BC, Canada Nick Muzzio OP Wheeler Thanks for the ideas, unfortionetly It was my own fault. It looks like the Throttle Position Sensor (TPS) was unplugged. She sounds a lot better now. Thanks again for the help. 91 Trooper LS, 5 Speed Manual 3.4L Engine w/4.3L Throttle Body Snorkel, 31" Pro Comp MT Tires, 2"lift, ProComp ES9000 shocks and steering stabilizer http://members.cardomain.com/sun_thief Moderated by  4x4Wire, houlster, jezeric, Jim_Paget, strawmyers  Hop To Mitsubishi Forums ------  Mitsubishi 4x4 and SUV Tech  Mitsubishi Diesels  Mitsubishi ArchiveToyota Forums ------  Early Toyota Trucks  Toyota 4Runner, FJ Cruiser &...  T100 & Tundra Forum  Tacoma Forum  Toyota Tech ArchiveJeep Forums ------  Jeep Talk  Jeep TechIsuzu Forums ------  Isuzu 4x4 & SUV Talk  Isuzu 4x4 & SUV Tech  Isuzu DieselsKia Forums ------  Kia Talk  Kia Sportage & Sorento TechOff Topic Chat ------  4x4 Gallery  Off-Topic Chat  Recreational Access & Land ...  Politics4xForums ------  Outdoor Gear  General 4x4 Discussion  Tools and Fabrication  General Communications  Amateur Radio  GPS and MapsParts Bin ------  Private Party - Garage Sale  Private Party - Items wanted  Vendors, Hot Deals, Group Buys4x4Wire Back Yard ------  Suzuki Forum  AZ Crawler Crew  Cal-Nev Crew  General Ford 4x4 & SUV Forum  General Dodge 4x4 & SUV Forum  General Chevy 4x4 & SUV ForumFeedback & Testing ------  Problems, Questions, Suggestions4x4Wire Staff ------  Forum Moderators  Problem Threads Print Thread Switch to Threaded Mode 5 Excellent 4 Good 3 Average 2 Bad 1 Terrible View Profile Private Message Homepage Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Homepage Follow User Forum Posts

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