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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   mdma pills for sale : WhatsApp +33758633852 ketamine, 4-MMC, MDPV, methylone, amphet...   Buy Nembutal Oral Solution Pentobarbital.. WhatsApp +33758633852 order nembutal online in Germany (WhatsA...   Drive Shaft Repair I have a 2015 Chevy Traverse AWD. The fr...   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...

Search Auto Parts Search '91 Celica problem need advice Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine Troubleshooting Mike Faulds New User Mar 10, 2007, 5:37 AM Post #1 of 5 (1719 views) '91 Celica problem need advice Sign In I have a '91 Celica that idles poorly, fouls the plugs, and dumps fuel into the oil. A mechanic friend believes I have a bad sensor, but the computor is not throwing any codes. Two mechanics have been playing with it for weeks trying to find what is causing this. Please help if you can. steve01832 Veteran Mar 10, 2007, 5:45 AM Post #2 of 5 (1716 views) Re: '91 Celica problem need advice Sign In Start with checking the fuel pressure with a guage. If the pressure is too high, excessive fuel will get delivered when the injectors open. If the pressure is normal, it could be a sensor problem or may even be that the timing belt could have jumped a tooth. If you have a sensor out of range, the computer may not always pick it up and turn on the engine light. No codes only means the computer hasn't seen anything abnormal yet. Another thing to check is backpressure. If you have a converter or muffler getting clogged, the same symptoms may appear. Steve (This post was edited by steve01832 on Mar 10, 2007, 5:46 AM) black bear Novice Mar 10, 2007, 2:59 PM Post #3 of 5 (1712 views) Re: '91 Celica problem need advice Sign In i have thought of 1 thing if you haven't checked it yet i would before doing much else it is a esey check of the fuel presure regulator to see if the diaphram if bad and spraying fuel in to you intake. so just remove the vacuum hose going to the regulator and see if there is gas in the hose also turn turn over the motor and see if it leaks then if it does replace it if . Attachments: press.gif (5.71 KB) steve01832 Veteran Mar 11, 2007, 5:22 AM Post #4 of 5 (1709 views) Re: '91 Celica problem need advice Sign In Good point to see if the regulator is leaking. However if it is stuck closed it will drive the pressure up but doesn't necessarily leak fuel. This is why I say to use a Guage. Steve PTEC User Mar 19, 2007, 8:54 AM Post #5 of 5 (1702 views) Re: '91 Celica problem need advice Sign In excessive blowby, check piston ring.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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