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Info Request
February 15, 2006 1:01 p.m. (20 minutes and 1 second later)
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I'm going to assume it's injected?
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Reply
Sent February 15, 2006 1:04 p.m. (2 minutes and 52 seconds later)
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Info Request
February 15, 2006 1:08 p.m. (4 minutes and 7 seconds later)
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Have you checked your fuel pressure while giving it gas?
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Reply
Sent February 15, 2006 1:11 p.m. (2 minutes and 25 seconds later)
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Answer
February 15, 2006 2:07 p.m. (56 minutes and 33 seconds later)
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Reply
Sent February 15, 2006 2:44 p.m. (37 minutes and 15 seconds later)
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One mechanic thought that it was a fuel pressure problem, that is why he replaced the pressure regulator. I myself did not replace the pressure regulator or the egr valve, this was done by the mechanics, and I can't afford for these guys to keep making guesses at this problem at approximately $65.00 an hour labor. Is there a way for me to check the pressure on the fuel system. I have taken the fuel line loose at the filter, and turn the ignition key on to see if it is pumping fuel,and it is. I have also checked the fuel coming into where the injector is located and it seems to be spraying into the manifold o.k. I think compression is o.k. it runs fine, when it runs, no detonation no loss of power. I don't know about spark as I'm not sure how to check spark while the engine is running.
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Answer
February 15, 2006 5:20 p.m. (2 hours and 35 minutes later)
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Reply
Sent February 15, 2006 5:52 p.m. (32 minutes and 9 seconds later)
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If this sensor is bad would the vehicle run sometimes and not run sometimes. What might be causing the TPS to "hiccup". Could there be a problem in the electrical system or a problem with the ECM. Thanks Ron S.
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Answer
February 15, 2006 6:13 p.m. (20 minutes and 46 seconds later)
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Reply
Sent February 15, 2006 6:45 p.m. (31 minutes and 54 seconds later)
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Michael, I appreciate your help on this, this has really been puzzling me for about three months. Two mechanics have diagnosed the truck, one came up with a speed sensor and the other came up with an EGR valve, the other mechanic just put a pressure regulator on it. I myself don't have a voltmeter, rather than taking this to a mechanic to have him look at it, would I be better off just replacing the TPS, it costs about $30.00. I know that replacing the TPS without diagnosing would be shooting in the dark "again", but I don't know what I should do. Thanks Ron S.
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Answer
February 15, 2006 7:01 p.m. (16 minutes and 2 seconds later)
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Just because you have fuel coming out doesn't mean it's OK. You say that when you give it gas it dies, if the volume of fuel isn't there when you demand it, it will cause the same symtoms. I'd start with the basic's like a fuel pressure test before jumping into TPS testing. I see knowledgable guys at every shop I work at jumping from system to system trying to diagnose the problem but fail to check the basic's and end up replacing parts that are good. (sound familiar?) Get yourself a cheap fuel pressure gauge from an auto parts store and find out what the fuel pressure is at idle and under a load. For an injected vehicle it should be 35-45psi.
It's true a bad TPS sensor could cause your problem but eliminate the basic's first before you go jumping around and wasting time. Think about it, the TPS is a load sensing device, you are moving the pedal and it's seeing your input and telling the computer to give more fuel (by increasing injector on time). True if it's bad it will cause your symtoms but it the fuel isn't getting there in the first place what's the point of checking it right now? You have to make sure your source is good before you start trying to figure out if your control devices are working...
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Answer
February 15, 2006 7:06 p.m. (5 minutes and 4 seconds later)
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Reply
Sent February 15, 2006 7:15 p.m. (8 minutes and 58 seconds later)
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Is the TPS for my model An adjustable TPS, I didn't think that it was. model 700 TBI.
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Answer
February 15, 2006 7:31 p.m. (16 minutes and 7 seconds later)
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ACCEPTED
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Hey Ron, If it looks like the one I posted, it's adjustable.If it's the stubby one like this ,pictured, it's fixed mount and your in business.
<
Edited by railman on February 15 2006 at 7:32pm__________________ "It is much wiser and cost efficient to ask a question  than to stumble blindly through your auto repairs".Please Click Accept if my answer was helpful.
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Reply
Sent February 15, 2006 7:43 p.m. (12 minutes and 6 seconds later)
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I think what I'm going to do is replace the TPS, and then if that does not fix the problem, I guess I will take it back to the mechanic and have him check the fuel pressure. Michael and Kyle, I appreciate your help on this matter, I hope that the $10.00 and a thank you will do, I know that it is not going to be enough, you guys are worth much, much, more than this. Thanks Ron S. in Oklahoma
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Answer
February 15, 2006 7:49 p.m. (5 minutes and 56 seconds later)
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Answer
February 15, 2006 11:47 p.m. (3 hours and 58 minutes later)
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