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Previous Thread Next Thread Print Thread Rate Thread Cold start problem. 89 3.0 #1052373 10/09/12 06:31 PM Joined: Mar 2011 Posts: 13 dyersburg,tenn H hampster OP Need a Spot Takes a lot of turns for my old 89'3.0 to fire after sitting over-nite or thru a shift at work. Once she fires she starts on first crank every time. Re: Cold start problem. 89 3.0 [Re: hampster] #1052374 10/09/12 08:03 PM Joined: Jan 2001 Posts: 13,649 Helen , GA fasteddy Web Wheeler Test ecu coolant temp sensor, on water neck at thermostat, points forward with two connecotrs in a tee shape. Cheap part at autozombie or advanced, around $30. Not responsible for advice not taken... Re: Cold start problem. 89 3.0 [Re: fasteddy] #1052375 10/09/12 08:35 PM Joined: Jul 2012 Posts: 9 Michigan 8 89Monty Need a Spot Had same issue with mine when I first got it...I replaced the coolant sensor, and cleaned the IAC and the port it seats into. Throttle body was gunky also. After that all was clean, I reconnected battery, and walla...no more issues for me... Re: Cold start problem. 89 3.0 [Re: 89Monty] #1052376 10/09/12 10:08 PM Joined: Mar 2011 Posts: 13 dyersburg,tenn H hampster OP Need a Spot Thanks to both for the answers. That should fix me up. Re: Cold start problem. 89 3.0 [Re: hampster] #1052377 10/11/12 02:43 AM Joined: Jan 2001 Posts: 13,649 Helen , GA fasteddy Web Wheeler Ecu uses ect sensor to determine cold start enrichment. When it's bad, it usually fails in such a way that the ecu doesn't know the engine is cold, so no cold start enrichment. As a consequence, the starting mixture is too lean to fire off cold. This usually starts showing up when the weather starts to turn colder, like lately... In a few cases, I've seen the ect fail so the engine thinks it's cold when it's not, and you run very rich... Not responsible for advice not taken... Moderated by  4x4Wire, Macka, Mudraider, off-roader, PHIL_, rxinhed  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 Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts View Profile Private Message Follow User Forum Posts

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