I have a 95 Toyota Tacoma, 2.7 L, 4 cylinder, 4wd. Two weeks ago it did not start. The shop replaced the distrubor cap, coil, rotator, plugs(twice), plug wires and tried changing out the oxygen sensors. It now starts but it does not accelorate properly (this was not a problem before) but it is not consistant when it happens. It think it is mis-firing usually getting onto the freeway and at high speeds. It jerks really hard. The second shop told me it was the distributor cap. So we checked to make sure there weren't any cracks. It looks good. I have already spent a fortune on labor and the shops can't find anything wrong. Any suggestions.
2007-11-26 10:10:03 · 13 answers · asked by KBB 1 in Cars & Transportation ➔ Maintenance & Repairs
Could be the filter in the gas tank... It could be the converter, but they usually will run not too bad when you first start the car, then you will gradually loose power as the engine warms up. Depending how bad its plugged, it can run good for a few miles. It usually won't miss, just loose power. It wouldn't be a bad idea to have it checked. You can do a back pressure test. There's a tester that goes where the O2 sensor is. The one before the converter. Some auto supplies will loan you one, call around.
2007-11-26 10:17:08 · answer #1 · answered by alk 4 · 0⤊ 1⤋
NEVER replace any part till you know the problem !
Did the "mekaniks" check to see if there was spark to the plugs before changing all those parts ?? The only thing that could possibly have caused a no start would have been the coil and that could have been tested before changing. It is running so that eliminates any sensor problems. I would suggest the problem is ignition timimg. The ecm controls the timing but the "mekaniks" may have messed it up. The other possibility is a slipped timing belt, if you have a belt. This needs to be checked out, you may have a chain and they don't slip. I don't know where you are but here is a list of honest shops.
http://www.iatn.net/shopfinder/
2007-11-26 10:58:17 · answer #2 · answered by tronary 7 · 2⤊ 0⤋
When was the Last time the Fuel System was Gone through? (Fuel Filter, Fuel Pressure Tested, Throttle Body Removed, Cleaned & Adjusted, Throttle Position Sensor Tested, Injectors Cleaned!). Get a Complete Diagnostic Read Out! Distributor Shaft could be Bent and Floating at high Acceleration! (Misfire)
2007-11-26 16:44:59 · answer #3 · answered by sidecar0 6 · 0⤊ 0⤋
from what you are telling me the shops you took your vehicle to don't know what they are doing. what is happening in this case is that you are not getting enough fuel yes it will run but when the engine needs more fuel it is not getting it.... it will sputter act like it is miss firing jerking etc. i would replace the fuel filter first and also check and see if there not any leaks if that don't help then i would pressure check the fuel if its good then check to make sure the fuel regulator is operating right
(when you brought your vehicle to the shop it could of jarred some dirt loose in the filter and it was able to run anything is possible when you are working on a vehicle i hope this helps you out good luck )
2007-11-26 11:15:46 · answer #4 · answered by scuba369me 2 · 1⤊ 0⤋
Unfortunately that's typical when dealing with automotive shops nowadays, 99% are idiots that just change parts until they get lucky.
Without really being there and seeing the truck it's really hard. My first guess would be a really sloppy and worn out timing chain or if this truck is belt driven it could be a slipped timing belt.
Could be really dirty fuel injectors. If this is the case I suggest that you go to PEP Boys or someone that has Red Line Fuel System Cleaner and run a whole bottle through it. I also hear Sea Foam is also pretty good.
Low fuel pressure.
Best bet would be to find someone in your area with a good reputation that has and knows how to use a dyno.
2007-11-26 11:15:14 · answer #5 · answered by G T 6 · 0⤊ 2⤋
Since the mechanics have tried to tune up the current already (i.e, distributor, coil, plugs and the like that have a direct impact on the electricity of a gasoline fed engine), one thing you can suggest to them is to check the air and fuel lines.
What you described seems to be pointing to a dirty or contaminated fuel line.
2007-11-26 22:33:31 · answer #6 · answered by maharli2005 2 · 0⤊ 0⤋
Change the main lead from the ignition coil.If this does not work check the coil feed wires for good connection.
2007-11-26 10:14:58 · answer #7 · answered by the rocket 4 · 0⤊ 2⤋
Hey....Listen to pacman. It won't run if the exhaust is plugged up and since I see that it's a '95, you probably got a lot of miles on it.
2007-11-26 10:18:33 · answer #8 · answered by db667089 5 · 0⤊ 1⤋
tps sensor
ground wire for the ecu.
battery terminals especially the negative wire to the body and engine. corrosion here is easy to miss and causes all sorts of issues
2007-11-26 10:22:36 · answer #9 · answered by Anonymous · 2⤊ 1⤋
Fuel filter?
Fuel Pump?
It is either air, fuel or spark.
It seems spark has been fixed, and air is rarely the problem
2007-11-26 10:15:15 · answer #10 · answered by Drew Carl 3 · 1⤊ 2⤋