ok heres my situation...
my daily driver is a 02 gt with about 55k on it (eco motor)
yesterday i ripped the battery out of it to move my brothers 91 cav..
put it back in, have drivin it three times since then no problems..
then this afternoon i drove from my house and got on the freeway (10-15 mins) when accelerating to merge into traffic the car just dies (not puter out and stall) like instant dead.. and wont start back up..
it turns over, i have spark, all other electrical works (radio, lights, door locks, guages etc...)
i have no way to really tell if i have fuel but when i pulled the plugs out there was a small residue of fuel on the pistons...
i read on the passlock issues (i undersand this seems a possible senario, but i dont have the theft system light flashing like i think i would if it was pass lock..
does anyone have an idea?
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Doesnt sound like the theft system. The theft system will allow it to start for a second or two then nothing till you turn the key off then try to start, and so on. You need to see if you are getting fuel for sure. Take some gas and pour iit in the throttle body, not a huge amount maybelike a tylenol bottle full. then try to start it. If that works then you have to find out whether the your getting an injector pulse or not. I have injector test lights that I use. More than likely if your gettin spark your getting injector pulse. Next you want to check the fuel pump operation. Those things are next to impossible to get a fuel psi guage on. Instead of trying the guage turn the key on and listen under the car for the fuel pump buzz. It will only turn on a few times then you have to bump the starter to reset the fuel pump priming system. If thats a no go. locate the fuel pump relay in the fuse box next to the battery, pop out the fuel pump relay, gently pry off the cover of the relay, put it back in, turn the key on. check to see if that relay is clicking, if it is, get a small screwdriver short out the contacts at the base while still plugged into the box. if no fuel pump sound at the tank, you need a pump. They arent cheap, at least a couple hundred. Get back to me if this doesnt work.
01 cav w/01 3400 gam gt 4t45e
yeah i can hear the pump prime.. relay is fine i forgot to mention i swapped the ac relay and the fuel pump relay while i was stuck on the side of the highway just in case.. (they are the same relay)
im kinda iffy about pouring fuel straight into the tb though..
whats weird is if it sits for a while (at least a half hour) it will pop once (exaust) like it wants to start... and then nothing
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gas in the throttle body wont hurt a thing, I do it all the time when diagnosing cars at work, just dont put too much cause you will flood it. Try that and get back to me.
01 cav w/01 3400 gam gt 4t45e
With the key on check for 5v on the injectors, using the engine as a ground, probe one of the two wires of one injector. If you want to further you either need to buy an injector noid light set, borrow one, or remove the ignition module and take it to an auto parts store that can check it. I think advanced auto can do it, call first.
Look you might think that I dont know what Im doing, right?
I have been working on these fuel injection systems for about 15 years, If your car were here I could tell you whats wrong with it in about 15 min. Its hard to diagnose with out seeing it. The more you tell me the better I can help. Thats why I told you to put gas in the TB, After all thats where it goes.
01 cav w/01 3400 gam gt 4t45e
i know.. i assume you know which is why im trying to give you all the info i can.. i appreciate the help.. and totally understand how it can be difficult to figure out not being here...
even though i had spark, i did swap the module coil packs springs and plugs from my 03 over to the 02 tonight.. and it did nothing.. its to late tonight.. and i leave to go outta town for the weekend.. ill have to mess with it when i get back..
thats why i was asking now though... just incase i mess with this on tuesday and i cant find anyone to awnser questions...
again thanks...
this is why i still love the .org
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Yeah what sucks here is not being there. Working on the new cars is a lot of trial and error if you dont have a scanner / diagnostic tool. sometimes that doesnt help either. If you swapped those parts and nothing, Im assuming that the engine is showing compression, From what you have told me I would have to point my finger back to that fuel pump. Some times the will sound good but dont put out any pressure. Try taking the fuel filter off (above the rear axle) put the line from the tank in a can or something to see if your getting any pressure or it just trickles out. Its a total pain to check the pressure on these things and Im assuming that you dont have a fuel pressure kit, so unless you can get no pressure out (trickles) I wont recommend you buy a pump unless you can check the pump with a guage. I think it should be at least 45psi I would have to check at work. Good luck.
01 cav w/01 3400 gam gt 4t45e
again.. not questioning you, just adding more info...
ive had pumps go bad in cars before...
and usually its a gradual thing right?
i mean this thing just died today.. it wasnt a stall it didnt like putter out... it just went from acelertate to off.. not a hint of hesitation...
so im thinking its gotta be something electrical? no?
i guess it could be a pump but i find it odd that it doesnt even try to fire
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Im pretty much out of ideas that I can explain for you to do without actually working on it myself. All I can tell you is that If you have spark, injector pulse, good fuel pressure and good compression then It should run. My best advice to you is to take it to a good mechanic in your area, tell him what you found out and let him go from there. And for god sake pour some fuel in the throttle body, at least then you will narrow it down to the fuel system. Good luck.
01 cav w/01 3400 gam gt 4t45e
well fuel in the tb didnt even make it fire...
im gonna try pulling the pcm outta my 03 and stick it in this to se if that does anything...
still doesnt add up.. fuel + spark should at least make it putter... or try to fire..
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So what happened?
You see if I could hear how it was cranking I could of told you if the timing was screwed. Or a simple compression test on all cylinders will give you a good Idea too.
01 cav w/01 3400 gam gt 4t45e
At how many miles? 55k? What the heck did you do to that poor thing.
Before you go any further, ask around to see if that motor bends the valves when the chain breaks. If they do you might be lookin for a motor as the cheapest route.
01 cav w/01 3400 gam gt 4t45e
