Im about to drive this truck off a cliff!! About 3 months ago i was getting on the highway, was in 3rd gear, pressed the gas, and the truck hesitated for a second, then kicked in and was fine. over these last 3 months the hesitation has ben getting progressively worse, and now sometimes it wont start, or will stall while im driving if i dont constantly give it gas. I took it to my mechanic and he replaced the coolant temp sensor, which did nothing. He couldnt figure it out, and didnt have a diagnostic machine that could check for problems on a 94 toyota. So i took the truck to the Toyota dealership, and they told me i had a short in my MAF sensor at idle. They wanted $1100 to fix and i told them to screw. I bought a used MAF sensor, installed it... nothing changed. I took the truck to another mechanic to get a third opinion and he wanted $140 to diagnose it, and suggested i buy a refurb MAF sensor.So i took his advice and did that, still nothing changed. I replaced the plugs, wires, air filter, changed the oil and checked the pcv valve which was fine. Still, nothing changed. When i pulled the plugs, each plug was half black, half white... i don't know what else to do... any advice would be awesome. thanks. oh, by the way, the truck is spitting black smoke when it decides to run like ****. Sometimes it runs fine, other times it doesn't want to move. Its day or night, no in between with this thing.
When the timing chains stretch( and they do!) they can cause the 22re to stumble intermittently. Have trouble starting, misfiring, and even some trouble codes But first check your engine for codes You can do this by jumping TE1 and E1 
If you have codes we can go from there.
You should pull your valve cover and check you timing chain tension, it should be very tight and not loose. if it is loose it is most likely time for a new chain and/ or tension and guides. I always replace them as a kit. Keep in mind that if the chain is worn it will get progressively worse until the engine will not run or the chain will wear in to the water galleys behind the water pump on the timing chain cover. sorry man.
Few more things to check will be your fuel pressure regulator it may be leaking diaphragm, also check 02 sensors and harness good luck
Check your cat converter sounds like it could be clogged.
I also think you should look more on the exhaust side. Bad cat can give bad readings to your o2
Could be your catalytic converter. too. Or oxygen sensor.
5,812 views
Usually answered in minutes!
i forgot to mention i replaced the coil as well...
the check engine light comes on only when the truck is running like **** then goes off when its back to normal.
i have very similiar problems with my 94, 4x4, 5-speed, 22re. replaced all ignition parts i.e. cap rotor plugs wires. aand i have a very heavy hesitation. it occurs more when the head lights are on. or during the day if i turn on a blinker it will hesitate with the blink. really wierd. any advice??
My 1994 toyota pickup 4wd is fine when first started then as it warms up it hesitates just replaced wiring,cat and muffler. Coding said it was the knock sensor try that the code is 52 and replace the o2 sensor. Then take it to your mechanic and have them reset the computer that worked for me. Good luck
Do this for me, when the engine is running bad:
Under the hood, with the engine running, and the Check Engine light on, look for a small rectangular grey box, with small female terminals in it. Observe the inside of the lid, and determine where the connectors "E1" and "Te1" are. Using a standard paper clip, or anything else that you may have that fits into the connectors, jump "E1" and "Te1".
Count the flashes of the check engine light. Example: 2 flashes-pause-4 flashes = code "24"
Get the code back to me so we can try to fix your problem. Note that you can only get the code when the problem is occurring.
The 94 trucks do not have a code "memory". Not running bad = no code.
I think you have a problem in the engine wiring harness, I have seen this issue before, and it was a wire broken inside the insulation.
Please advise me if the Check Engine light is on or not.
Buy the reconditioned injectors and new rubber O rings and replace!
×