car hesitates between 3500 and 6000 rpms (need help)

S73R · Post by **S73R** » Sat Dec 17, 2005 5:51 pm

hey i just rebuilt mystarion,
but the car failes to perform just stops pulling at high rpm....
i can figer it out.... i think its fuel but
if anyone knows any thing that would help me out would be much appeshated

gotrice? · Post by **gotrice?** » Mon Dec 19, 2005 4:09 pm

Check your vac advance its under your dissy. blow into vacuum hose that's going to the vac advance, if you can blow though it then is most likely stuffed also try sucking on it then use your tongue to block off the hose to see if it holds pressure if it doesn't then its stuffed

Junkers · Post by **Junkers** » Mon Dec 19, 2005 7:58 pm

Don't get too carried away though

S73R · Post by **S73R** » Mon Dec 19, 2005 9:30 pm

thanks it was vaccum advance rofl
i would of never thought of that......
but now i must fix it.... hmmm........

S73R · Post by **S73R** » Wed Dec 21, 2005 7:42 pm

i got one a vac advance that is.....
i hope thats the problem.....
got rice? can a vac advance really make that much diff????

S73R · Post by **S73R** » Sat Dec 24, 2005 8:16 pm

ok i need some more help.....
the vac advance helped but the car still wont rev past 5000
and it loses power long before then
i preforms ok when cold still not up to standard but it will rev to 6000
some times the car surges at 3750rpm only too stop pull ing and miss and hold at 4500 or 5000
i need advice i want to know if any one knows about this problem
i have had a mechcanic look at it but he is not sure ether

Rassy · Post by **Rassy** » Sun Dec 25, 2005 8:20 am

Ive had that sort of problem happen to me a cuple of times now an the first time was because the cam timeing had skiped a tooth an was runn retarted all the time.

Then I've had problems with the map sensor playing up or just not maping but that just aventualy shit its self an shut the engine down. (unpluged the map sensor an made it home) an now with a another map sensor in has been really good for a few months an then the alsternator went to ground an earthed out an just fried everthing. thatnks to me older brother. so now i think I've trashed another map sensor.lol (aftermaket time)
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Chrysler fifth avenue history

S73R · Post by **S73R** » Sun Dec 25, 2005 6:44 pm

i have a JA 1982 starion 2lt
i didnt think they had a map sensor..... but i dont know....
ether way where can i find it too see if thats the problem
i ve looked all ova the moter
i dont think its cam coz when its cold it wont hesitate as bad....

redzone · Post by **redzone** » Sun Dec 25, 2005 10:28 pm

yep yours will have (should have) a map sensor located above the brake booster, mounted on a plate on the firewall. will have a round multi pin connecter and a vacuum line running out of it. symptoms sound like map sensor disease, mitsubishi actually called it a boost sensor as that is its main function, it will mainly make the car run excessively rich when not under boost if its playin up, tho will affect operation on boost aswell but not as much. that`d also explain why its better when cold, if its running rich the engine wont b affected as much by the prob when its cold. c if u can find a mate with a ja that can swap his map sensor onto yours temporarily 2 c if thats the problem. only a 5 minute operation saves a lot of fkn around!!

Rassy · Post by **Rassy** » Sun Dec 25, 2005 10:44 pm

the maps sensor is located right above the master cylinder an to the right a fraction. it's a rectangular box with an air line running to it an has a round wireing pin conector(6or8 wire's). I don't know if there is any special way to confirm there not working, what ive done in the past is have the car at an idle an then disconected the wires in do that is should change the idle speed an even stall. If dose that then it may some thing an the map sensor should be working I bit rough but it all I've got.
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Sandra18

S73R · Post by **S73R** » Mon Dec 26, 2005 3:10 pm

i took it off.... no differce in perfromance
is there a resitance check i can do?????
i think that maybe the problem

redzone · Post by **redzone** » Tue Dec 27, 2005 12:35 pm

if u took it off and it made no difference then thats gotta be at least part of the problem if not it entirely! dont know what checks u can do on it, myself and everyone else i`ve talked 2 that plays with these cars regularly has a test unit thats known 2 be ok that they just plug in and test drive. so c if u can borrow 1 off a mate temporarily....

Monty · Post by **Monty** » Tue Dec 27, 2005 2:05 pm

shit now that you say that i have that same problem car goes quite hard when cold but when on boost the turbo feels like its doing stuff all but yet still running ok boost hmmm might go home and try that

Monty · Post by **Monty** » Wed Dec 28, 2005 6:26 am

ok well i think you guys were right i ca'nt find a map sensor above the booster or vac advance on the dizzy maybe cause i have a dash motor?

ciao lee

AB · Post by AB » Wed Dec 28, 2005 7:32 am

DASH engines don't use a vac advance because the computer controls the ignition timing and they don't have a MAP sensor because... well I don't know why.

Austarion

car hesitates between 3500 and 6000 rpms (need help)

car hesitates between 3500 and 6000 rpms (need help)

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