WebMar 13, 2024 · Step 1: Check Engine Light. Anytime you have an engine that is backfiring the first thing to look for is a check engine light. If no warning lights are on continue down this guide. If the check engine or service engine soon light in on scan the computer for trouble codes. This will help locate the system that is having a problem and needs repair. WebMay 9, 2009 · Check that hose when motor is still cold - it should NOT have vacuum until engine is warm, and never at idle or full throttle. The cold idle air valve (called the "auxiliary air valve" by Toyota) is right below the throttle valve (butterfly) - it's essentially the bottom part of the TB. It has two coolant hoses attached to it.
Why Is My Car Sputtering When I Step On The Gas?
WebNov 1, 2024 · When I start the engine in the morning it runs rough and I get a 301 code. After the truck warms up and I reset the code, the truck runs great for the rest of the day. I recently replaced all four spark plugs and coils. Any suggestions? Thanks! jgaugh, Jul 24, 2016 #1 Jul 24, 2016 at 2:01 PM # 2 keakar Well-Known Member Joined: Oct 2, 2014 … WebRemove the sensor or coil from the vehicle, if necessary. Test the sensor resistance; or the primary and secondary ignition coil resistance. Compare your results to the specifications in your vehicle repair manual. Heat the sensor or ignition coil moderately using a hot air gun or hair dryer. Repeat step number 2. laleh utöya
Diesel Problems in the Winter (And How to Avoid Them)
WebJul 23, 2008 · It runs rough only at idle when warm. When warm, driving normally or just blipping the throttle by hand, it runs just fine. When warm, it idles roughly and stalls. When … WebAug 25, 2011 · Once they heat up to operating temperature they stop work intermittently like a faulty oil pressure sensor does. (only when the sensor is failing). You will have to let … Web85 toyota 4 runner. Brand new 22re motor with mild cam for torque. Replaced fuel filter and pump in tank. Runs great when cold but when warm cuts out realy bad under throttle load. … jens rostrup