350 Tbi Running Cold. running well Swap with a tbi 350 out of a 1989 into a 1995 G

running well Swap with a tbi 350 out of a 1989 into a 1995 GMC with a tbi 350. this thing is surging and its always a 50/50 chance of it stalling out when ever I come to a stop or get into reverse, it has … Ive got a 1994 k1500 with a 350 tbi and lately its been stalling while driving. 350 TBI runs poorly only when cold The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board My 350 TBI in my truck is becoming undriveable with a really bad bog and hesitation/stumble when I try and take off at any rpm or speed. I think I may have a temp wire for the timing unpluged but I'm not sure … Need to build your credit goto www. First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel … 94 tbi starts but dies unless u pump the gas it runs rough 3. After warms up it either dies or will not restart after shut down. Hidden engine problems and reliability issues most … Hi everyone I'm new to the forums so i apologize for any mistakes. 73. 7 350 TBI 160xxx miles, tuneup at 155000 miles, including plugs, wires, rotor, cap, filters, fuel pump etc anyways, it doesnt like to start on cold … Recommended 350 TBI modifications1. The exhaust smells "gassy" like it is running rich. This will apply mostly to 1987-1998 vehicles with Throttle Body Inje Tips for preventing 350 tbi runs great cold, dies when warm Issue To avoid running into similar issues in the future, it’s essential to take some preventative measures. … I can't remember what fuel pressure a TBI should be running at. Sounds like its hanging in the open position. An outside possibility might be an electrical issue, low battery etc … Clarkson128 What’s everyone else solve for 350 tbi running rich Sort by: Best Open comment sort options Add a Comment Recommended 350 TBI modifications1. I have repaired a few things: 1. all original harness came out of the suburban and straight into my buggy. 7 TBI 4l60e 197000 miles stock with stock replacement parts. This thing runs great once its had time to warm up to about 150°. Leaking intake gasket (Leaking oil from the valley) 2. Let … In this video I show you how I diagnosed a poor running 2001 GMC Yukon when the engine is cold. Has ran rough for several years. GM TBI 350 stalling when starting act like running out of gas when passing somebody and blowing igni Patrick Waugaman 167 subscribers Subscribe Does anyone know about 350 TBI engines? I have a 1987 V10 with the original 350 TBI. Checked both spark and injector spray and nothing from both. It is a 1993 Suburban 4x4 350 tbi. One out of five times the idle will seem to fall out when taking it out of gear and coming to a stop. I've verified all of the normal things that may cause … New member here looking for some help with 350 TBI running richUnfortunately you have dreaded tbi surge. First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel … So I did just test the resistance on the sensor itself. That is the positives. Check fuel pressure next. sprayed starter fluid in it and still won’t start. If you read other posts similar to this it's kinda the same thing, … New member here looking for some help with 350 TBI running richUnfortunately you have dreaded tbi surge. Anyhow there are a couple different … My bet is on the fuel pump, distasteful as that may sound, especially since it is episodic on cold mornings. Start it cold, wait 15 seconds of so and it goes rich and starts bogging down and sputtering. It idles rough for about 20-30 seconds … Hello. Spark plugs are black and sooty. I … Fix for running rich code 1988 chevy 350 5. This … The short and sweet: Symptoms: Truck starts, idles around 1500 RPM, then dies between 15-30 seconds. Took it for the 1st real drive today as part of … 350 Tbi Operating Temperature The normal operating temperature for a 350 Tbi engine is between 195 and 220 degrees Fahrenheit. … The subject is an '89 Chevy 3/4 ton 4X4. 4L impala starts then dies after being on for 10-15 seconds 1993 Chevy C1500 4. Recently replaced ignition control module due to miss under load. How old is the fuel filter? Have you ever dumped a bottle of Chevron … Jimbo62 J D Rough cold start, missfire and low idle 1995 gmt400 5. 350 small block w/ TBI - injectors spray strong - new Throttle To adjust Chevy 350 valves, start with a cold engine. MOST of the time … Similar threads '88 350 TBI Engine Noises and Idle mrdap Jun 14, 2025 Tech Discussion Replies 13 Views 876 Jun 16, 2025 I have a chevy 350 tbi when it sits over night or all day or a few days. I had this happen last winter … Ive been working on my pops suburban. I am having issues during cold start. You can also take the IAC off and clean it and the … When the engine is cold, it has less oil in its cylinders and can’t produce enough power to make the car move. Parts replaced: Rebuilt throttle body, IAC, PCV, Vacuum lines, Fuel … SBC 350 with a cam, TBI, not running right 1 reading Jump to Latest 25K views 30 replies 10 participants last post by NorCalJalopy May 8, 2024 My question isduring cold start on tbi (factory settings. The idle doesn't increase, the engine has a slight misfire, and there's poor … When warm I've watched the injectors, both sides pulse continuously when walking throttle from idle to WOT, runs good, no flat … TBI 350 running rich The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board My 350 TBI is running very rough. It’s important to keep an eye on your … I have been pulling what hair I have left out over this issue. Especially when it's been driven - shut down for an hour - and restarted. My 95 with the TBI 350 is running rich. 7 TBI would crank but not start. This is a follow-up video to my question about the GM 5. I replaced all kinds of parts I thought may be contributing to this, with no change. 3L V6 TBI starts but dies at idle after warming up. It idles around 1500rpms when I start it up in the morning. 7L 350, TBI, Auto, 220Kmiles Its been a great truck, for the most part it runs and drives … Hey guys! This is my first post here as i've never been a paid member up until recently, but i've always used ck5 threads since i've owned my k5. 7 TBI stalling out when put into drive or reverse gear as well as stalling at idle and or sever hesit I have a 91 Silverado K1500 4x4, 5. I've had several fuel filters get clogged on me from a bad tank of gas, and it caused EXACTLY the same symptoms … Discover the specifications, configuration, and oil maintenance for the Chevy 350 TBI engine, a reliable V8 powerhouse. So far I … Alrighty, so I have a 1995 k2500 Silverado with 350 tbi. Temp sensor, map, and tps all … TBI is surging with steady part throttle in open loop when cold. After l drive and warms up it idles … My 350 TBI is running very rough. Had the oscillating temperature on my jeep cherokee after installing a motorad thermostat. org they can really help you build your credit! If your chevy gm tbi is running rich this will help you trou I have a 89 chevy tbi that cranks from a cold start and runs good until it warms, then runs rough and stalls everytime. When l go to start it up,It has low idle,then l give gas it starts to idle better. Assuming your gauge is accurate, I'd say yes. The surge is like a whup-whup-whup … Starts and runs/idles rough until you accellerate some the it smooths out and runs like it should. It would get up to running temp and then drop, … Hello. … 87 Chevy 350 TBI low Idle issue The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board The 350 TBI utilizes a Throttle Body Injection system for fuel delivery, while the Vortec employs a Multiport Fuel Injection system. 17k ohms. When the engine is cold, it has less oil in its cylinders and can’t produce enough power to make the car move. it idles rough and acts like its running really rich, then … hi i have a 1990 chevy k2500 5. Before I went on a … 350 TBI running rich? Question Jump to Latest 12K views 15 replies 6 participants last post by burgandybowtie Dec 22, 2013 Car engines are designed to run better when they are warm. Can also come with a TBI systems don't hold pressure when the pump stops running, but the other fuel injection styles should. … Does anyone have the wiring diagram for the iac vale connector I have a 1995 1500 350 tbi it’s die after running for about 1 minute I’ve replaced most of the sensors but not the egr or the egr I feel your pain with a cr@ppy thermostat. It idled nice and strong. A rebuild is a good idea if it has … Discover more answers My gas mileage has dropped from 18 to 13 mpg. Good running engine out of 1994 GMC K1500. I have a 1991 c1500 5. It revs up fine in park and low acceleration but … I have a 92' Chevy 350 TBI engine in my Jeep and for the past year it keeps running rich. Shows a reading of 7. … 350 TBI running rough with EST wire plugged in I have a 1990 K1500 with a 350 TBI engine that I installed myself over a year ago. 030 over on the bore. I have a 87 Chevy 350 that was running good but latley it has been stumbling and backfiring when you step on the throttle heavy. A new ECM finally cured it. EGR solenoid replaced (Hose was connected to vent. 8K views 17 replies 5 participants last post by NorCalJalopy Jun 18, 2023 hi i have a 1990 chevy k2500 5. With the diagnostic aid chart … Helping a friend get a 92 Blazer up and running - we got it to start but CEL was on and ran rich. However i'm now in a spot … In this video, I will show you how to set the base idle for your Chevy or GM V8 engine. Checked both spark and injector spray 1989 suburban tbi 350 initial cold start runs rough. Ran great for a long time, but started having issues with it … The TBI is very similar in that regard, if it sits for any amount of time or hasn't been rebuilt in a while you can get all kinds of issues with fueling. how many miles? was it running fine until this happened, any other relevant history to help with diagnois? if the check engine light is coming on, what is the code (s)? codes can … 77 Chevy Truck with new 91 TBI motor swapped in. The current issue is it is running cold. It's pretty much always there, I … Check injector spray pattern, if possible, have somebody else crank as you watch on a cold start. 7l tbi tps idle adjustment Scott Eshelman Redeemed Motors 1. It is a 91 chevy truck with the 350 (5. Surges at idle, sometimes dies. … So have a 1990 4. Trouble starting after it sits for awhile do to not getting fuel right away. I have a 1990 350 tbi that runs great cold. Or it will die if I place in drive or reverse. It seems to only be doing it while at idle speed, ie coasting or sitting at a light. If you read other posts similar to this it's kinda the same thing, … Ok, so my truck was off the road for a month or so with some running issues. Sometimes it will sputter a bit and the RPMs will drop but it catches … I have a 92 GMC 350 TBI that has difficulty starting in cold conditions and struggles to keep running. How old is the fuel filter? Have you ever dumped a bottle of Chevron … i have a tbi 350 out of a 90 suburban in my jeep. creditchicken. I changed the plugs, and … problem: 95 K1500 with 5. … 1991 K5 TBI 350 with SM465. basically first start of the day or whenever there is a long time duration between starts. Rotate the crankshaft to Top Dead Center (TDC) on the compression stroke for the cylinder you’re adjusting. The lower intak Hi guys i have a 94 gmc sierra 350 tbi and i have like a little hard start problems when cold but in this video start well but not so cold in this video my 350 tbi is extreamly cold natured. 7 350 TBI 160xxx miles, tuneup at 155000 miles, including plugs, wires, rotor, cap, filters, fuel pump etc anyways, it doesnt like to start on cold … 1993 5. Used TBI parts, new painless harness with all correct sensors including VSS. The IAC is definitely something I will check out. The … Got a 95 C1500 was a v6 swapped it to a 350 with a baby cam but I’m having smoking issues any ideas or suggestions to get it running w no smoke Hello! I have an 87 with a 350 TBI that really does not like to start in the mornings when it is cold. This is a very common problem on all GM V8's. 7 tbi daleoshak Sep 9, 2025 Engine Performance + Maintenance Replies 8 Views 833 Sep 10, 2025 TBI systems don't hold pressure when the pump stops running, but the other fuel injection styles should. 7/350tbi), I just bought it from a used car lot and noticed it was running rich (overwhelming gass smell from exhaust). I slid I am at my wits end. I always thought it was just too cold and not getting out of the warm up mode. If it sits for more than a few hours when you start it the idle hunts from about 600-1700 rpm. Injector flow is great, forgot to mention about a month ago I completely rebuild the TBI unit, did not help the cold running at all. It does it … Hello all, Recently bought a 91 crewcab square with a 454 TBI with a 4l80e behind it, after vehicle has been shut off, after more then 30 seconds it won't restart, found injectors to … Runs great at idle for 5 minutes and then starts sputtering and running rough. The engine also has trouble starting up and idling smoothly … I have an 87 with a 350 TBI that really does not like to start in the mornings when it is cold. Cold engine, ambient temperature around 51 degrees. I've got remote start, so i am … Only thing I hate about this 350 rancher is it don’t want to start when it’s cold or been started for a few days. It … 1994 TBI 5. So my dad's truck has an eratic idle i cant figure out and will … I have a 1990 Chevy C1500 (5. NO codes or SES. It will spit … I have a 91 GMC Jimmy which idles horribly (and it has even stalled) when it is cold outside (17* C or less) and it is the first start of the day. I have to work the pedal for like 3-5 minutes depending on the temperature. I belive it has the stock gears though i was told it has 3. 67K subscribers Subscribe I I changed vacuum lines the whole bunch of parts replace the intake manifold gasket as well as all vacuum lines and major engine sensors the truck was runni I'm working on a 1991 LD2500 with a 350. … OK guys, I am out of ideas here on this truck. The truck misses for about 30 seconds after start up when the … For a year my 1988 GMC Vandura with a 5. I have a 95 k1500 with a 350 tbi engine, and I have been trying to troubleshoot a high idle for weeks now. It is still in the truck so you can hear it run. Heat sink paste was … Im lucky enough to have a friend with a perfectly running 91 tbi 350 truck he doesn’t use much that he loaned me and I spent the day swapping each and every part related … Tbi 350 lean -solved engine swap lean tbi 350 Jump to Latest 7. It was running rich before the rebuild and is still running rich. Hold the throttle down for 30 seconds then it gets past that issue … 350 TBI running rich? Question Jump to Latest 12K views 15 replies 6 participants last post by burgandybowtie Dec 22, 2013 My 94 Blazer (350 TBI) has started acting up. 3 v6 tbi with a nv3500 looking to swap in a 350 tbi in to it Other than the headers mounts and electric fans is there anything I should know? It’s complete … The fuel tank in my 1984 Cavalier (also TBI) was quite badly rusted perhaps due to sitting for 10 years without being driven (the fuel pump had to be replaced to get it running … I have a 92' Chevy 350 TBI engine in my Jeep and for the past year it keeps running rich. Jumpered the ALDL, got a code 33. It appears to me to be an ignition problem because it is getting gas. The truck has 190K miles on it and runs fine other than a misfire. It should open and close within 10 degrees of it's rating. 7 tbi with 115,000 miles on it. 7) with TBI. The truck runs well above idle, never stalls at idle but idles rough. Could it … I must be missing something here, but I am about out of ideas. All of a sudden she's running rough. 7/350 engine. 7 TBI. is there away I can … So as the title states i have a 1989 C1500 Scottsdale with a 350 TBI TH700r4. . No mods) what sensor inputs is the computer waiting for before it lets the idle come First off, 1988 350 tbi fully rebuilt kept it stock other than . 228k miles. vdc2zwfo
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