Won't rev past 3000 RPM
#1
Won't rev past 3000 RPM
Well I followed suggestions in other threads and so far....
I have a 1992 Z28 305 TPI that won't rev past 3000 RPM in park.
I replaced the fuel filter, the pressure and timing seems to be OK.
I was told to clean the MAF sensor, so I tried to find it (thanks Haines) and ended up taking the throttle body off only to discover there is no MAF! Now I have the throttle body in my hand and all I have is a throttle position sensor that I don't know how to check and filthy coolant soleniod poppet valve that I don't know what it does or is supposed to or how to test it.
So, I have two questions.
How do I test the parts I dissasembled?
If they are OK what else can I check that would cause the low revs at WOT?
Thanks in advance.
I have a 1992 Z28 305 TPI that won't rev past 3000 RPM in park.
I replaced the fuel filter, the pressure and timing seems to be OK.
I was told to clean the MAF sensor, so I tried to find it (thanks Haines) and ended up taking the throttle body off only to discover there is no MAF! Now I have the throttle body in my hand and all I have is a throttle position sensor that I don't know how to check and filthy coolant soleniod poppet valve that I don't know what it does or is supposed to or how to test it.
So, I have two questions.
How do I test the parts I dissasembled?
If they are OK what else can I check that would cause the low revs at WOT?
Thanks in advance.
#2
Well 1st off your 92 has a speed density computer setup. It uses just an 02, map(which may be your problem) coolent temp, tps, and an iat snesor.
Dose you car throw a code? I'm thinking a $40 map sensor may be your culpret.
Dose you car throw a code? I'm thinking a $40 map sensor may be your culpret.
#4
#10
I put the timing light pickup on each plug wire and got nice pulsing, no missing. I listened to each injector with a screwdriver, nice rythmic clicking on all.
#13
Dang, body panels that crumple when you lean on them but mufflers that are indestructible. WTH? wore out a muffler chisel and got two inches cut.
What is this? titanium?
Seems like the converter is the problem, I can hear chunks banging around in it.
What is this? titanium?
Seems like the converter is the problem, I can hear chunks banging around in it.
Last edited by dbcisco; 08-18-2010 at 07:21 PM.