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93 s10 350 wont rev past 3000rpms idles at 500rpms
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daddydec21
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Joined: 26 Oct 2010
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PostPosted: Sat Apr 16, 2011 12:01 am    Post subject: Reply with quote

thank you 10sec you helped me before i really appreciative of your help, you and ever ones help hopefully we can get this fixed. i just put a new fuel filter on it to and that did not difference
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jeep_406
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1972 Chevrolet Nova

PostPosted: Sat Apr 16, 2011 1:37 am    Post subject: Reply with quote

I used to have access to AllData but I don't have it anymore. If you don't get it straightened out by Monday I can check out info at a buddies shop. I hesitate to make observations because of the fact that I've only been playing with hot rods since the mid 90's. It's amazing what you lose when you don't use it.
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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Sat Apr 16, 2011 1:50 am    Post subject: Reply with quote

jeep_406 wrote:
I used to have access to AllData but I don't have it anymore.


X2 Sad . hopefully squeeezer can help.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sat Apr 16, 2011 2:01 am    Post subject: Reply with quote

HA!!!! we dont need no steenkin alldata..... http://www.gmtuners.com/OBD1_DTC.htm

DTC - 59 Trans fluid temp sensor circuit error (high voltage)
will have to do some digging on this but its possible this is a 5V sensor and its shorted pulling down the voltage on other 5V sensors. check your TPS (since its easiest to get to) and see if you have 5V at the connector with it unplugged. i dont remember which wire but one is 5V, one is ground and the other is signal return.


DTC - 43 Knock sensor error
should have about 2.5V back probing the connector (while connected) with key on. this is also a 5V circuit.


DTC - 82 3x Crankshaft position sensor circuit error
dont know if this is really an accurate description of this code since everything should be in the distributor on this engine. however, it could be a ignition pick-up or module problem. any chance you have another distributor you could try ?

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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daddydec21
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PostPosted: Sat Apr 16, 2011 8:59 am    Post subject: Reply with quote

yea i had automatic and i got rid of it to put in standard so i dont know if that has and effect? also i had the ignition module to advance and they checked that's on there machine it it was fine no other distributor laying around its really weird it how it acts as there is a rev limiter at 3k its frustrating lol ill check for five volts its the center plug on the tps actually did not think of checking that 5v
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daddydec21
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PostPosted: Sat Apr 16, 2011 12:25 pm    Post subject: Reply with quote

checked the voltage theres is 5v at the tps
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daddydec21
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PostPosted: Sat Apr 16, 2011 10:04 pm    Post subject: Reply with quote

any chance on a fuel pump?
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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Sun Apr 17, 2011 2:07 am    Post subject: Reply with quote

fuel pump usually causes a big bog under accel. doesnt act like a rev limiter. if you have an advance timing light you can place the magnetic pick-up around the signal wire to one of the injectors, adjust the "timing" on the dial (as you aim it at the injector) and see what the spray pattern looks like coming out of the injectors. it should be a nice uniform cone. as far as distributor goes, i was actually thinking pick-up coil instead of the module. unfortunately, you need to be able to graph the signal from the pick-up to see if its breaking up. what condition are the cap, rotor, wires, and spark plugs in ?

i read the part about you changing to a manual trans but it didnt register at the time. your code 59 will be there without a trans temp sensor hooked up. i dont think it will cause any issues other than a check engine light. you can get a custom PROM made and turn that off.

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af2 wrote:
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daddydec21
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PostPosted: Sun Apr 17, 2011 10:54 am    Post subject: Reply with quote

plugs are bosch, wires are 8mm accels cap and rotor are stock and all those parts i replaced new about 2 weeks ago and the spray of the fuel looks pretty uniform til you hit the high rpm then it breaks up
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jeep_406
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1972 Chevrolet Nova

PostPosted: Sun Apr 17, 2011 11:38 am    Post subject: Reply with quote

You measured 5 volts at the TPS. Was that the reference line? What did you read for voltage at idle and through the TPS range? What reading did you get at full throttle?

Jeep
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blown406s10
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PostPosted: Sun Apr 17, 2011 1:36 pm    Post subject: Reply with quote

Sounds Like the ext. might be plugged check the converter!
Seen this happen more than once!
Blown 406 Chevy S10



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daddydec21
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PostPosted: Sun Apr 17, 2011 4:33 pm    Post subject: Reply with quote

not cat on it at this present time
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daddydec21
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PostPosted: Sun Apr 17, 2011 4:34 pm    Post subject: Reply with quote

havent tryed them ill try them today
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daddydec21
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PostPosted: Mon Apr 18, 2011 1:15 pm    Post subject: Reply with quote

.05 on idle 4.55 on WOT got a distributor form the junk yard today and runs worse with that one but i did notice that the star shaped piece that spins i believe its called a reflector there looks to be like a graphite maybe magnet under neath it it look like a circle that's cracked up pretty bad on both more so the one i got at the junk yard then the one i have i believe that's the pickup coil anyway to test that?
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af2
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1933 Willys Coupe

PostPosted: Mon Apr 18, 2011 9:20 pm    Post subject: Re: 93 s10 350 wont rev past 3000rpms idles at 500rpms Reply with quote

daddydec21 wrote:
all of a sudden its idling at 500rpms.and revs to around 3000rpms. acts like a rev limiter at 3000rpms. i used the orig 4.3ltr wiring and comp.


You think the 4.3 computer might be seeing 3000 as 5000 and 500 at 600???????? I do.

Sorry I didn't pay attention to the post at first.
I am thinking as if you set a tach to 6 cylinders on a V8.
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