View Full Version : 1994 toyota 4runner running issues

09-05-2013, 02:32 PM
When its in park it idles fine as soon as I put it in drive it will run rough until I give it some gas. Then sometimes when I first start it it will run rough then stops when I give it fuel. Thrn sometimes when im sitting at a stop sign and I give it gas to go there is a bit of hesitation. What might be causing this. Spark plugs.fuel filter and airfilter been changed. Any help is much appreciated. Thank you

09-05-2013, 02:58 PM
plugged cat, tuna style?

09-05-2013, 03:00 PM
vacuum leak, intake manifold leak, pcv valve, tps? it sounds like your motor is starving from air, or getting to much gas. any idea if there is black puffs, coming out the tailpipe when revved up?

09-05-2013, 03:16 PM
Havent seen any black smoke coming out the rear

09-05-2013, 03:18 PM
I also tried I believe its the ignition coil but that wasnt it.

09-05-2013, 03:59 PM
:confused0006:pcv valve?, air filter?

09-05-2013, 04:08 PM
Changed air filter. Doesnt look like any leaks hoses. How hard Iis it to change pcv valve? Im new to this stuff

09-05-2013, 04:28 PM
Most ridiculous PCV valve ever. Get a Haynes manual. I'm not totally convinced, that's what it is though.

09-05-2013, 04:47 PM
Fuel pump on it's way out?

09-05-2013, 04:58 PM
pcv is brutal to change. its under the intake mani.

Try a different MAF if you have access to one. It could be a ton of things. It running in park fine but in drive makes me think torque converter (Does it do the same thing in neutral, or does it run like poo?). It could be an out of whack TPS or even timing.

Give us a bit of history, has the truck ran fine before? Did it start doing this since it got a bit cooler out (think cold start injector)? any recent wiring mods?

09-05-2013, 05:05 PM
It started doing this a bout the last month or so. . Before that the truck ran perfect. No wiring mods done. Recent work on truck has been sparkplugs.airfilter. fuel filter. A brake line. And sway bar links.

09-05-2013, 05:06 PM
But its been doing this before I changed out this stuff

09-05-2013, 06:28 PM
hey crazybushcreature I have a Haynes or Chilton for that 94 runner you can borrow but I will need it back so you cant keep it I live in the wack too so we could meet and I could lend it too you it may help you out if you like

09-05-2013, 06:42 PM
Ive got one round here. Just gotta find it. It came with my old 4runner

09-06-2013, 08:42 AM
I would start with MAF and TPS.

09-06-2013, 09:04 AM
I would start with MAF and TPS.