buggy will not start

[Mike F]

Looking at the diagrams for a 94 it does look like it could be the ignition switch. The blue wire that goes to the fuel pump relay coil is also the power wire for the computer (seperate blue wire from a spliced connection).

Check for 12v + with the key on at the relay, if no power it could also be a fuse before or after the ignition switch.

Wire diagrams at www.autozone.com http://www.autozone.com/servlet/UiBr...3d80113bc2.jsp

diaram fig 28

[94Dodge Truggy]

Hey mike, I see you also have a fuelie 360. I replaced the ignition switch, coil, computer, crank sensor, fuses, relays, cam sensor, neutral safety switch etc... I do have power through the blue wire going to the fuel pump and the automatic shutdown relay. The computer is feeding 2.8 volts to most of the sensors. Before I burn the truggy, I think I am going to take it to j & n. They are in woodlawn near cincinnati and are confident that they can figure it out and help me simplify the wiring. Thanks alot for the info.

[Mike F]

They can probably hook into the computer and see what is going on.

Looks like you hit all the obvious potential problem parts. Hope it is not something expensive to fix, it looks like you have spent enough money on it.

It will be interesting to find out what the problem is. I have never worked with Chrysler EFI.

Well I have a AMC 360 with GM TBI on it that I installed and programed not the Dodge 360. I have also helped a few guys with MV4W fuel inject thier Jeeps.

Good Luck
Mike

[KargoMaster]

EFI AMC 360 sounds nice... I ended up going to Propane for the AMC 360 in my build... that's if I ever get to work on it... :(

[94Dodge Truggy]

Man, kargojack! I believe you are the hijacker ;)

[AKToy]

Did you get it figured out (why the fuel pump won't cycle) yet?

[94Dodge Truggy]

Still broke. Fuel pump will not cycle due to a fault for the automatic shutdown relay I believe.

[KargoMaster]

Man, kargojack! I believe you are the hijacker ;)

At least I know the difference between an AMC and a Chrysler 360!!

You end up taking it to someone else, or are you still banging your head against the concrete...?

[94Dodge Truggy]

what do you mean amc/chrysler 360? Buggy may be going to the shop this week to jn. I am kicking around a 4bt cummins. Had the boat out today on brookville lake.

[KargoMaster]

hrmmmm...

what do you mean amc/chrysler 360?

Hrmmm.... maybe I've mis-interpreted...


Your FIRST post in this thread...

...my truck is a 360 auto...

A few back...

Hey mike, I see you also have a fuelie 360...

Isn't one a Chrysler 360 and the other an AMC 360?

I may have 'jacked Jack's thread, but I know that these are not the same engine... that's all I was saying...

You get a temp on the water? Few years ago I went (without a wet/drysuit) in about 40 degrees in Brookville in March... Wow, that'll give the ol' system a shock! I beleive the first and only time that I've felt compelled to open the engine bay and climb in for warmth!

[sarge]

Just a random thought ! I seems to have a lot of those on these slow , cold midnights ....... My 94 Grand Cherokee had the 318 FI and it had it's fair share of electrical problems .... One was that the factory anti-theft would set it's self from time to time ( and when the battery was unhooked or dead ) and it would not start . I had to unlock it from the drivers door with the key to disable the anti theft crap!!!!
Now I know you don't have doors ( or much of body left ) so this might be a problem but it might be a cause :confused: :confused: :confused: I know it's a different vehicle but they're cousins .

[mike shelton]

dist

dodge fuel pump get thier fire from the dist i think. no spark no pump. slap another dist in it before you send it to someone to just throw cash at. gabby

[Mike F]

Looks like autozone mixed up the wire diagrams.

Diagram fig. 29 shows the 94 v8 not a 4cyl as in fig. 28 that should be the V8.

In the diagram no connection is shown to the dist. so I would think the signal would come from the crank sensor for spark. Does the dist. have any kind of pickup in it? A lot of EFI sytems do look for a signal from the dist. and like Shelton said will not do any thing with out it.

I do not have a chrysler book, is 2.8v the correct signal voltage? I thougt a lot of the systems used 5v. Can the position sensors be tested possibly? On a way out thought, is the motor turning over fast enough to get a good signal from the sensors? Do you have a solid 12v to the computer while cranking? The computer may not turn on if it does not have close to 12v. How about computer/sensor grounds, one could have been toasted if it tried to carry welding voltage for some reason like connecting the welder ground to the frame and welding on the body. Is the computer plug actually making a connection with the computer on all terminals?

A lot of thoughts, maybe some help maybe not. ;)

[94Dodge Truggy]

I have been able to fool the computer by grounding the black with tan or pink wire and running a hot wire to the coil. But when the motor warms up after a few minutes it runs like poo at idle and eventually stalls out. I replaced the crank sensor and pickup sensor in the distributor also. I will do more checks on the correct signal voltage and make sure the continuity between sensors and computer are good.

[Mike F]

In the diagram two wires are black/tan pins 11 & 12. The diagram does not show what they do, they may be grounds. If you only grounded one you may need to ground the other. Running hot to the coil looks to bypass the auto shutdown relay that may not be getting the ground signal from the computer due to a bad ground on the other black/tan wire possibly? The fuel pump relay gets the same ground so if it is working now why is the shut down relay not working?

The motor running bad could be one of the temp sensors, IAC, MAP, or a vacuum leak. Hard to tell.