Almost forgot, the "cap, rotor, wires, plugs" were replaced with official GM parts when he did the intake gasket a little bit ago. Everything was working great & then this problem just started a couple weeks ago! Note - when it died 2 weeks ago & he had it taken home on a rollback...

Hey SoCalli V8, I don't know if you're asking me to fill out my signature, but if you read my first post in this thread, it states this Astro is my neighbor's, it is not mine! So I'm not putting someone else's vehicle in my signature! Anyway... it is a 98 Astro AWD, 4.3 "W" engine, so it ...

We checked the TPS & it works fine. We also checked the MAP & it is OK according to the test. This morning, it fired up & ran great... UNTIL... it warmed up & then the hesitation/die-ing was back. Warmed up it still idles great, but any movement of the throttle pedal & it hesita...

We "googled" "TPS test" & it was amazing how much stuff came up! One other thing he said he sort of cleaned was the MAP sensor. One of the TPS test articles that came up, said a bad MAP sensor could cause similar results as the TPS too! So as soon as he gets the time, we'll ...

What are some of the symptoms of a bad TPS or that it may be going out??? My neighbor's 98 Astro AWD "W" engine, idles fine & sometimes it accelerates fine, "sometimes", but other times it drops to nothing or almost dies! Sometimes, if it is acting this way, you can sort of ...

While the antifreeze/coolant/water combo is corrosive, the real problem is that when the oil pan has that combo in it due to a intake leak, it's on the bottom under the oil & when you start the engine, the "combo" is what is sucked up first & then the oil. That makes for "basi...

Hey Mike, I am a retired profession mechanic & over the last 40+ years, I have owned & operated 3 different auto repair shops. I do all of the maintenance & repair on my own vehicles, as I do not trust 90% of the "so-called" mechanics in my area. I'm not sure where you got the ...

OK... I've found out that the distributor in our 97 Astro AWD has a "Cam Position Sensor" in it, not a "Ignition Control Module"!!! Any idea where they mounted it??? I've looked at the photos of it from several sources & it has me stumped!!! I was told that it is possibly mo...

OK... test drive... before the intake manifold started leaking, the Astro ran great! I get it all back together, fire it up & fill it with water (for now) & warm it up! Sitting at idle, if you "hit" the gas pedal, it dies out! If you push it easy, the rpms come up OK. Took it for a...

I had the intake manifold "hot tanked" & it was run thru the cleaning cycle 3 times! It cleaned it real well & only needed attention to a couple areas. They did a pressure test & it passed. I bought a FelPro Intake Gasket Set & was very impressed with the quality! I was ri...

I tried searching but didn't come up with anything, so... I have a 97 Astro AWD... How common is it for the intake manifold gasket to leak antifreeze/water on the 4.3, at the front driver side??? Yesterday morning, temp low 30s, driving along at 65-70 mph on the freeway, I noticed that the water tem...